PFAS contamination data for 10,030 water systems in Washington, serving 9,854,810 people.
PFOA MCL: 10 ppt(EPA: 4 ppt)
PFOS MCL: 15 ppt(EPA: 4 ppt)
WA state action levels: PFOA 10 ppt, PFOS 15 ppt, PFHxS 65 ppt, PFNA 9 ppt, PFBS 345 ppt. CAS Phase 5 PFAS actions ongoing.
Washington state has action levels and is actively investigating PFAS contamination. Significant contamination near Fairchild AFB (cleanup pushed to 2032) and Whidbey Island NAS (pushed to 2034).
Serious SDWA violator: CAMPBELL FARM, Wapato, WA
PWS ID: 1053AB363
2026-05-11 · Read more →
Serious SDWA violator: Columbia Generating Station, Benton, WA
PWS ID: WA5392024. County: Benton
2026-05-11 · Read more →
Serious SDWA violator: AgriNorthwest Riverbend, Benton, WA
PWS ID: WA5306559. County: Benton
2026-05-11 · Read more →
Free eligibility check — plus weekly MCL, deadline, and funding alerts for Washington.
| System | City | Population | PFOA (ppt) | PFOS (ppt) | Status |
|---|---|---|---|---|---|
| SEATTLE PUBLIC UTILITIES WA5377050 | Seattle | 1,091,904 | — | — | Compliant |
| TACOMA WATER DIVISION CITY OF WA5386800 | TACOMA | 448,771 | — | — | Compliant |
| VANCOUVER CITY OF WA5391200 | Vancouver | 373,047 | 11.5 | 18.6 | Exceeds |
| SPOKANE CITY OF WA5383100 | Spokane | 343,167 | — | 6.1 | Exceeds |
| BELLEVUE CITY OF WA5305575 | Bellevue | 317,330 | — | — | Compliant |
| EVERETT PUBLIC WORKS DEPT. CITY OF WA5324050 | Everett | 215,774 | — | — | Compliant |
| ALDERWOOD WATER DISTRICT WA5301300 | Lynnwood | 200,000 | — | — | Compliant |
| KENT WATER DEPARTMENT |
PWS ID: WA5359379. County: Whatcom
2026-05-11 · Read more →
Serious SDWA violator: CLE ELUM WATER DEPARTMENT, Kittitas, WA
PWS ID: WA5313500. County: Kittitas
2026-05-11 · Read more →
| Kent |
| 166,421 |
| — |
| — |
| Compliant |
| REDMOND WATER SYSTEM CITY OF WA5371650 | Redmond | 163,335 | — | 5 | Exceeds |
| BELLINGHAM-WATER DIVISION CITY OF WA5305600 | Bellingham | 139,912 | — | — | Compliant |
| LAKEHAVEN WATER AND SEWER DISTRICT WA5341997 | FEDERAL WAY | 118,273 | — | 4.1 | Exceeds |
| CLARK PUBLIC UTILITIES WA5313333 | VANCOUVER | 116,876 | 8 | 8.4 | Exceeds |
| PASCO WATER DEPARTMENT WA5366400 | Pasco | 116,342 | — | — | Compliant |
| HIGHLINE WATER DISTRICT WA5340650 | Kent | 115,950 | — | — | Compliant |
| KENNEWICK CITY OF WA5338100 | Kennewick | 114,468 | 4.6 | 11.5 | Exceeds |
| OLYMPIA CITY OF WA5363450 | OLYMPIA | 113,584 | 4.3 | 5.8 | Exceeds |
| Auburn City of WA5303350 | Auburn | 113,095 | — | — | Compliant |
| YAKIMA WATER DIVISION CITY OF WA5399150 | Yakima | 112,858 | — | — | Compliant |
| SKAGIT COUNTY PUD 1 JUDY RES WA5379500 | Mount Vernon | 111,415 | — | — | Compliant |
| RENTON CITY OF WA5371850 | Renton | 107,119 | — | — | Compliant |
| RICHLAND CITY OF WA5372250 | Richland | 106,248 | 10.1 | 17 | Exceeds |
| NORTHSHORE UTILITY DISTRICT WA5340800 | Kenmore | 105,105 | — | — | Compliant |
| LACEY WATER DEPARTMENT WA5343500 | Lacey | 103,755 | — | — | Compliant |
| MARYSVILLE UTILITIES WA5351900 | Marysville | 88,589 | — | — | Compliant |
| SAMMAMISH PLATEAU WATER & SEWER WA5340900 | Sammamish | 79,362 | — | 11.1 | Exceeds |
| BREMERTON CITY OF WA5308200 | Bremerton | 70,913 | — | — | Compliant |
| LYNNWOOD CITY OF WA5349270 | Lynnwood | 68,204 | — | — | Compliant |
| KIRKLAND CITY OF WA5342250 | Kirkland | 67,107 | — | — | Compliant |
| TUMWATER CITY OF WA5389700 | Tumwater | 66,373 | — | — | Compliant |
| SOOS CREEK WATER & SEWER DISTRICT WA5340100 | Renton | 64,534 | — | — | Compliant |
| SOUTHWOOD WA5382844 | Tacoma | 64,155 | 6.2 | 8.9 | Exceeds |
| LAKEWOOD WATER DISTRICT WA5345550 | LAKEWOOD | 62,089 | — | 5.9 | Exceeds |
| SNO PUD 1 - LAKE STEVENS WA5380907 | Everett | 60,064 | — | — | Compliant |
| WOODINVILLE WATER DISTRICT WA5341600 | Woodinville | 59,873 | — | — | Compliant |
| JBLM Lewis WA5326050 | Joint Base Lewis-McChord | 58,497 | 6.8 | 11.1 | Exceeds |
| SILVER LAKE WATER & SEWER DISTRICT WA5379250 | Bothell | 56,582 | — | — | Compliant |
| COVINGTON WATER DISTRICT WA5341650 | Kent | 52,276 | — | 8.6 | Exceeds |
| PORT OF SEATTLE/SEATAC AIRPORT WA5303182 | Seattle | 49,483 | — | — | Compliant |
| LONGVIEW WATER DEPARTMENT WA5348100 | Longview | 49,111 | — | — | Compliant |
| TUKWILA WATER DEPARTMENT WA5389500 | Tukwila | 45,374 | — | — | Compliant |
| WENATCHEE CITY OF WA5394350 | Wenatchee | 43,690 | — | — | Compliant |
| ISSAQUAH WATER SYSTEM WA5336350 | ISSAQUAH | 43,584 | — | — | Compliant |
| WALLA WALLA WATER DIVISION WA5392500 | Walla Walla | 42,959 | — | — | Compliant |
| BONNEY LAKE WATER DEPARTMENT CITY WA5307650 | Buckley | 42,654 | — | — | Compliant |
| PUYALLUP CITY OF WA5370050 | Puyallup | 39,100 | — | — | Compliant |
| KING COUNTY WATER DISTRICT #20 WA5338950 | Seattle | 38,974 | — | — | Compliant |
| FIRGROVE MUTUAL INC WA5325200 | Puyallup | 36,168 | 4.4 | 8.6 | Exceeds |
| NOB HILL WATER ASSOCIATION WA5359700 | Yakima | 36,026 | — | — | Compliant |
| EDMONDS CITY OF WA5322500 | Edmonds | 34,023 | — | — | Compliant |
| BOTHELL WATER CITY OF WA5307900 | Bothell | 33,643 | — | — | Compliant |
| MOSES LAKE CITY OF WA5356300 | Moses Lake | 32,428 | — | 52.2 | Exceeds |
| FIFE DEPT OF PUBLIC WORKS WA5325050 | FIFE | 32,380 | — | — | Compliant |
| SPANAWAY WATER COMPANY WA5382850 | Spanaway | 31,908 | 6.2 | 8.3 | Exceeds |
| CAMAS MUNICIPAL WATER SEWER SYSTEM WA5310800 | Camas | 31,794 | 4.4 | 12 | Exceeds |
| North City Water District WA5339600 | Shoreline | 31,744 | — | — | Compliant |
| MERCER ISLAND CITY OF WA5353640 | Mercer Island | 30,689 | — | — | Compliant |
| QUIL CEDA VILLAGE 105300116 | TULALIP | 30,000 | — | — | Compliant |
| BATTLE GROUND WATER DEPT CITY OF WA5304700 | Battle Ground | 29,974 | — | — | Compliant |
| PULLMAN WATER DEPARTMENT CITY OF WA5369880 | Pullman | 29,690 | — | — | Compliant |
| PARKLAND LIGHT & WATER COMPANY WA5366200 | Tacoma | 29,595 | 6.2 | 13.8 | Exceeds |
| PORT ANGELES CITY OF WA5368550 | Port Angeles | 28,946 | — | — | Compliant |
| West Sound Utility District #1 WA5302600 | Port Orchard | 28,928 | 5.7 | — | Exceeds |
| CEDAR RIVER WATER & SEWER DISTRICT WA5341800 | Maple Valley | 28,671 | — | — | Compliant |
| CENTRALIA PUBLIC WORKS - WATER WA5312200 | Centralia | 28,164 | — | 5.8 | Exceeds |
| WHITWORTH WATER DISTRICT 2 WA5396601 | Mead | 26,883 | — | 4.6 | Exceeds |
| SILVERDALE WATER DIST 16 WA5379300 | Silverdale | 26,634 | — | — | Compliant |
| EAST WENATCHEE WATER DISTRICT WA5321800 | East Wenatchee | 26,519 | — | — | Compliant |
| MOUNTLAKE TERRACE CITY OF WA5357250 | Mountlake Terrace | 26,402 | — | — | Compliant |
| Mukilteo Water & Wastewater Distr WA5357550 | Mukilteo | 25,182 | — | — | Compliant |
| VERA WATER & POWER WA5391450 | Spokane Valley | 24,692 | — | — | Compliant |
| NORTH PERRY AVE WATER DISTRICT WA5360950 | Bremerton | 24,402 | — | — | Compliant |
| Lake Meridian Water District WA5341900 | Kent | 24,231 | — | — | Compliant |
| OAK HARBOR CITY OF WA5362650 | Oak Harbor | 23,767 | — | — | Compliant |
| MONROE WATER SYSTEM WA5355820 | Monroe | 23,467 | — | — | Compliant |
| ENUMCLAW WATER DEPARTMENT WA5323600 | Enumclaw | 23,276 | — | — | Compliant |
| CROSS VALLEY WATER DISTRICT WA5316270 | Snohomish | 23,054 | — | — | Compliant |
| PUD #1 OF ASOTIN COUNTY WA5393343 | Clarkston | 21,930 | — | — | Compliant |
| WASHINGTON STATE UNIVERSITY WA5393200 | Pullman | 21,506 | — | — | Compliant |
| WASHOUGAL CITY OF WA5393400 | Washougal | 21,441 | — | 7.9 | Exceeds |
| CONSOLIDATED IRRIG DIST 19 SYSTEM 2 WA5310221 | Greenacres | 21,220 | — | — | Compliant |
| ANACORTES CITY OF WA5302200 | Mount Vernon | 21,105 | — | — | Compliant |
| RIDGEFIELD PUBLIC WORKS WA5372400 | Ridgefield | 20,967 | — | — | Compliant |
| ELLENSBURG WATER DEPT WA5322950 | Ellensburg | 20,900 | — | — | Compliant |
| ARLINGTON CITY OF WA5302950 | Arlington | 20,418 | — | — | Compliant |
| KING COUNTY WATER DISTRICT NO 90 WA5341150 | Renton | 20,100 | — | — | Compliant |
| FERNDALE WA5324850 | Ferndale | 19,305 | — | — | Compliant |
| SPO CO WATER DIST 3 SYS 1 WA5393351 | Spokane | 18,983 | — | — | Compliant |
| MODERN ELECTRIC WATER CO WA5355600 | Spokane | 18,487 | — | — | Compliant |
| ROSE HILL WATER DISTRICT WA5340850 | KIRKLAND | 18,300 | — | — | Compliant |
| WEST RICHLAND CITY OF WA5394900 | West Richland | 18,280 | — | — | Compliant |
| LYNDEN WATER DEPARTMENT WA5349150 | Lynden | 17,969 | — | — | Compliant |
| ABERDEEN CITY OF WA5300050 | Aberdeen | 17,958 | — | — | Compliant |
| SHELTON CITY OF WA5378170 | SHELTON | 17,575 | — | — | Compliant |
| KING COUNTY WATER DISTRICT #125 WA5341998 | SEATTLE | 17,546 | — | — | Compliant |
| POULSBO CITY OF WA5369150 | Poulsbo | 17,180 | — | — | Compliant |
| EASTERN WASHINGTON UNIVERSITY WA5321900 | Cheney | 17,108 | — | — | Compliant |
| SUNNYSIDE CITY OF WA5385400 | Sunnyside | 17,037 | — | — | Compliant |
| PORT TOWNSEND CITY OF WA5369000 | Port Townsend | 16,977 | — | — | Compliant |
| NAVAL BASE KITSAP AT BANGOR WA5302714 | Silverdale | 16,828 | — | — | Compliant |
| YELM CITY OF WA5399350 | Yelm | 16,633 | — | — | Compliant |
| NAVAL AIR STATION/WHIDBEY ISLAND WA5303420 | NAS Whidbey Island | 16,595 | — | — | Compliant |
| NORTH PENINSULA WA5305122 | Poulsbo | 16,449 | — | — | Compliant |
| OLYMPIC VIEW WATER & SEWER DISTRICT WA5363600 | Edmonds | 16,403 | — | — | Compliant |
| SUMMIT WATER & SUPPLY CO WA5385050 | Tacoma | 16,109 | — | — | Compliant |
| KING COUNTY WATER DISTRICT #49 WA5339800 | Burien | 16,065 | — | — | Compliant |
| COAL CREEK UTILITY DISTRICT WA5341750 | Newcastle | 15,989 | — | — | Compliant |
| SNOQUALMIE WATER WA5381080 | SNOQUALIME | 15,848 | — | — | Compliant |
| CHELAN CO PUD 1 WA5312284 | Wenatchee | 15,840 | — | — | Compliant |
| PORT ORCHARD WATER DEPT WA5368900 | PORT ORCHARD | 15,810 | — | — | Compliant |
| SUMNER CITY OF WA5385120 | Sumner | 15,530 | — | — | Compliant |
| FRUITLAND MUTUAL WATER COMPANY WA5326800 | PUYALLUP | 15,313 | 4 | — | At risk |
| KELSO CITY OF WA5338000 | KELSO | 15,097 | — | — | Compliant |
| GIG HARBOR WATER DEPT WA5327600 | Gig Harbor | 14,902 | — | — | Compliant |
| CHENEY CITY OF WA5312400 | Cheney | 14,621 | — | — | Compliant |
| QUIMPER WA5305783 | Port Townsend | 14,500 | — | — | Compliant |
| SEQUIM CITY OF WA5377620 | SEQUIM | 14,293 | — | — | Compliant |
| LIBERTY LAKE SEWER & WATER DISTRICT WA5347150 | Liberty Lake | 14,212 | — | — | Compliant |
| STANWOOD WATER DEPT CITY OF WA5383650 | Stanwood | 13,785 | — | — | Compliant |
| DUPONT WATER SYSTEM CITY OF WA5320500 | DuPont | 13,141 | — | — | Compliant |
| JBLM McChord Field WA5352200 | Joint Base Lewis-McChord | 13,115 | — | 5.3 | Exceeds |
| SELAH CITY OF WA5377400 | Selah | 12,515 | — | — | Compliant |
| BAINBRIDGE ISLAND CITY OF WA5397650 | Bainbridge Island | 12,486 | — | — | Compliant |
| NAVAL BASE KITSAP AT BREMERTON WA5303468 | Silverdale | 12,078 | — | — | Compliant |
| SKYWAY WATER & SEWER WA5338800 | Seattle | 12,036 | — | — | Compliant |
| BEACON HILL WATER & SEWER DISTRICT WA5315650 | Kelso | 11,969 | — | — | Compliant |
| HOQUIAM WATER DEPARTMENT WA5334350 | HOQUIAM | 11,456 | — | — | Compliant |
| CHEHALIS WATER DEPARTMENT WA5312250 | Chehalis | 11,426 | — | — | Compliant |
| SNOHOMISH CITY OF WA5380915 | Snohomish | 11,258 | — | — | Compliant |
| GRANDVIEW CITY OF WA5328970 | Grandview | 11,010 | — | — | Compliant |
| SOUTHEAST TACOMA MUTUAL WATER CO WA5382800 | TACOMA | 10,850 | — | — | Compliant |
| WOODLAND CITY OF WA5398200 | WOODLAND | 10,640 | — | — | Compliant |
| MANCHESTER WATER DISTRICT WA5350700 | MANCHESTER | 10,437 | — | — | Compliant |
| ORTING CITY OF WA5364500 | Orting | 10,332 | — | — | Compliant |
| DUVALL CITY OF WA5320750 | DUVALL | 10,267 | — | — | Compliant |
| LWWSD - SOUTH SHORE WATER SYSTEM WA5395910 | Bellingham | 10,028 | — | — | Compliant |
| PORT ANGELES COMPOSITE WA5343296 | Carlsborg | 9,879 | — | — | Compliant |
| MOUNTAIN VIEW-EDGEWOOD WATER CO WA5356820 | Edgewood | 9,680 | — | — | Compliant |
| AIRWAY HEIGHTS CITY OF WA5300650 | Airway | 9,489 | — | — | Compliant |
| CONSOLIDATED IRRIG DIST 19 SYSTEM 1 WA5310220 | Greenacres | 9,434 | — | — | Compliant |
| CHELAN WATER DEPT CITY OF WA5312300 | Chelan | 9,425 | — | — | Compliant |
| OCEAN SHORES WATER DEPT WA5363008 | Hoquiam | 9,347 | — | — | Compliant |
| LEAVENWORTH CITY OF WA5346500 | Leavenworth | 9,218 | — | — | Compliant |
| BIRCH BAY WATER & SEWER DISTRICT WA5395904 | Birch Bay | 9,019 | — | — | Compliant |
| TOPPENISH WATER DEPARTMENT WA5388850 | Toppenish | 8,950 | — | — | Compliant |
| OTHELLO WATER DEPARTMENT WA5364850 | Othello | 8,755 | — | — | Compliant |
| UNION HILL WATER ASSOCIATION INC WA5390260 | Redmond | 8,720 | — | — | Compliant |
| EPHRATA WATER DEPARTMENT WA5323650 | Ephrata | 8,620 | — | — | Compliant |
| STEILACOOM TOWN OF WA5384000 | Steilacoom | 8,545 | — | — | Compliant |
| NE SAMMAMISH SEWER & WATER DISTRICT WA5375265 | Sammamish | 8,516 | — | — | Compliant |
| QUINCY WATER DEPARTMENT CITY OF WA5370450 | Quincy | 8,415 | — | — | Compliant |
| YAK CO - TERRACE HEIGHTS WA5306029 | Yakima | 8,410 | — | — | Compliant |
| COLLEGE PLACE WATER DEPT WA5314050 | College Place | 8,147 | — | — | Compliant |
| NORTH BEACH WATER WA5363000 | Ocean Park | 8,093 | — | — | Compliant |
| MILTON CITY OF WA5354950 | MILTON | 8,078 | — | — | Compliant |
| KALAMA CITY OF WA5337550 | KALAMA | 8,020 | — | — | Compliant |
| FIRCREST CITY OF WA5325150 | Fircrest | 7,927 | — | — | Compliant |
| PACIFIC CITY OF WA5365300 | Buckley | 7,925 | — | — | Compliant |
| MODEL IRRIGATION DIST #18 WA5355550 | Spokane | 7,903 | 4.2 | — | Exceeds |
| TANGLEWILDE THOMPSON PLACE 600 WA5304397 | Lacey | 7,900 | — | — | Compliant |
| STEVENS CO PUD - SUNCREST WA5385202 | Loon Lake | 7,484 | — | — | Compliant |
| BUCKLEY WATER WA5309000 | BUCKLEY | 7,411 | — | — | Compliant |
| PEACOCK HILL WA5366637 | Tacoma | 7,401 | — | — | Exceeds |
| NORTH BEND CITY OF WA5360100 | North Bend | 7,228 | — | — | Compliant |
| SULTAN WATER DEPARTMENT WA5384770 | Sultan | 7,160 | — | — | Compliant |
| WHITWORTH WATER DIST 2 SYSTEM 8 WA5396607 | SPOKANE | 7,130 | — | — | Compliant |
| GRANITE FALLS CITY OF WA5329050 | Granite Falls | 6,926 | — | — | Compliant |
| LAKE CHELAN RECLAMATION DISTRICT WA5343783 | Manson | 6,798 | — | — | Compliant |
| SOUND WATER WA5381376 | TACOMA | 6,660 | — | — | Compliant |
| ELMA CITY OF WA5323100 | ELMA | 6,638 | — | — | Compliant |
| SALLAL WATER ASSOCIATION INC WA5375560 | North Bend | 6,600 | — | — | Compliant |
| UNION GAP WATER WA5390250 | Union Gap | 6,433 | — | — | Compliant |
| ENERGY DEPT OF/200W WA5300100 | Richland | 6,351 | — | — | Compliant |
| BLAINE CITY OF WA5307300 | BLAINE | 6,319 | — | — | Compliant |
| PASADENA PARK IRR DIST 17 WA5366300 | Spokane | 6,269 | — | — | Compliant |
| PROSSER CITY OF WA5369750 | Prosser | 6,211 | — | — | Compliant |
| SPO CO WATER DIST 3 SYS 4 WA5393354 | Spokane | 6,155 | — | — | Compliant |
| TULALIP BAY WATER DIST #1 105300003 | TULALIP | 5,968 | — | — | Compliant |
| ARTONDALE WA5303160 | Tacoma | 5,828 | 6.3 | 153.6 | Exceeds |
| SEVEN LAKES WATER ASSOCIATION WA5377660 | Stanwood | 5,823 | — | — | Compliant |
| CASHMERE WATER DEPARTMENT WA5311700 | Cashmere | 5,815 | — | — | Compliant |
| SNOQUALMIE PASS UTILITY DISTRICT WA5381048 | Snoqualmie Pass | 5,805 | — | — | Compliant |
| BENTON CITY WATER WA5305800 | Benton City | 5,626 | — | 8.7 | Exceeds |
| SPO CO WATER DIST 3 SYS 1 WA5393350 | Spokane | 5,600 | — | — | Compliant |
| MOXEE WATER DEPARTMENT WA5357300 | MOXEE | 5,599 | — | — | Compliant |
| FAIRCHILD AIR FORCE BASE WA5324350 | Fairchild AFB | 5,553 | — | 7.9 | Exceeds |
| MONTESANO CITY OF WA5356000 | Montesano | 5,492 | — | — | Compliant |
| NORTH BAINBRIDGE WATER CO WA5359994 | Poulsbo | 5,490 | — | — | Compliant |
| WESTPORT WATER DEPARTMENT WA5395300 | WESTPORT | 5,346 | — | — | Compliant |
| WAPATO WATERWORKS WA5392800 | Wapato | 5,255 | — | — | Compliant |
| POINT EVANS WA5368065 | Tacoma | 5,211 | — | — | Compliant |
| CONNELL CITY OF WA5314600 | Connell | 5,150 | — | — | Compliant |
| GRAYS HARBOR CO WATER DIST 2 WA5329250 | Montesano | 5,112 | — | — | Compliant |
| MINTERBROOK WA5354740 | Tacoma | 5,083 | — | — | Compliant |
| DEER PARK CITY OF WA5318500 | Deer Park | 5,045 | — | 7.5 | Exceeds |
| KING COUNTY WATER DISTRICT #54 WA5339950 | Des Moines | 5,037 | — | — | Compliant |
| Mattawa City of WA5352000 | Mattawa | 5,015 | — | — | Compliant |
| SPOKANE BUSINESS & INDUSTRIAL PARK WA5383027 | Spokane | 5,000 | — | — | Compliant |
| MEDICAL LAKE CITY OF WA5353400 | Medical Lake | 4,982 | — | 4.4 | Exceeds |
| COLVILLE WATER DEPARTMENT WA5314200 | Colville | 4,955 | — | — | Compliant |
| OMAK CITY OF WA5363750 | Omak | 4,940 | — | — | Compliant |
| LONGMIRE WA53NP580 | Ashford | 4,871 | — | — | Compliant |
| VINLAND WA5391923 | Poulsbo | 4,801 | — | — | Compliant |
| FORKS MUNICIPAL WATER DEPT WA5326000 | FORKS | 4,744 | — | — | Compliant |
| WARDEN CITY OF WA5392850 | Warden | 4,674 | — | — | Compliant |
| Raymond Water Department WA5371500 | RAYMOND | 4,620 | — | — | Compliant |
| LONG BEACH WATER DEPARTMENT WA5348000 | LONG BEACH | 4,592 | — | — | Compliant |
| BELFAIR WATER DISTRICT 1 WA5305350 | BELFAIR | 4,432 | — | — | Compliant |
| SOUTH BAINBRIDGE WA5381451 | Poulsbo | 4,414 | — | — | Compliant |
| KING COUNTY WATER DISTRICT #45 WA5339700 | Seattle | 4,398 | — | — | Compliant |
| CASTLE ROCK MUNICIPAL WATER WA5311800 | CASTLE ROCK | 4,367 | — | — | Compliant |
| ORCHARD AVENUE IRRIGATION DIST 6 WA5364000 | Spokane | 4,330 | — | — | Compliant |
| GOLDENDALE CITY OF WA5328450 | Goldendale | 4,314 | — | — | Compliant |
| PATTISON 500 WA5366578 | Lacey | 4,302 | — | — | Compliant |
| EAST SPOKANE WATER DIST 1 WA5321650 | Spokane Valley | 4,285 | — | 5.5 | Exceeds |
| TRENTWOOD IRRIGATION DISTRICT 3 WA5389250 | SPOKANE | 4,228 | 5.1 | 12 | Exceeds |
| SUQUAMISH WA5386400 | Poulsbo | 4,203 | — | — | Compliant |
| CRYSTAL MOUNTAIN INC WA5316400 | Raymond | 4,154 | — | — | Compliant |
| IRVIN WATER DISTRICT #6 WA5336050 | Spokane | 4,150 | — | — | Compliant |
| COUPEVILLE TOWN OF WA5315550 | Coupeville | 4,077 | 9.8 | — | Exceeds |
| WHITE SALMON CITY OF WA5396350 | White Salmon | 4,077 | — | — | Compliant |
| STEVENS PASS WATER SYSTEM WA5384245 | Leavenworth | 4,053 | — | — | Compliant |
| SKYWAY WATER & SEWER DISTRICT WA5315788 | SEATTLE | 4,000 | — | — | Compliant |
| GRANGER WATER DEPARTMENT WA5329000 | Granger | 3,993 | — | — | Compliant |
| KING COUNTY WATER DISTRICT 119 WA5341985 | Duvall | 3,796 | — | — | Compliant |
| EVERSON CITY OF WA5324200 | Everson | 3,788 | — | — | Compliant |
| SPO CO WATER DIST 3 SYS 3 WA5393353 | Spokane | 3,765 | — | — | Compliant |
| GRAND MOUND WA5307158 | Olympia | 3,764 | — | — | Compliant |
| PARKVIEW TERRACE WA5366215 | Tacoma | 3,730 | — | — | Compliant |
| WATER DISTRICT 19 WA5338900 | Vashon | 3,723 | — | — | Compliant |
| EASTSOUND WATER USERS ASSOCIATION WA5322170 | Eastsound | 3,711 | — | — | Compliant |
| LUMMI TRIBAL WATER DISTRICT 105300002 | BELLINGHAM | 3,699 | — | — | Compliant |
| LAKE CUSHMAN SYSTEM 5 WA5303529 | Hoodsport | 3,675 | — | — | Compliant |
| EATONVILLE WATER DEPT WA5322300 | Eatonville | 3,645 | — | — | Compliant |
| FRIDAY HARBOR TOWN OF WA5326595 | Friday Harbor | 3,543 | — | — | Compliant |
| ZILLAH CITY OF WA5399800 | Zillah | 3,518 | — | — | Compliant |
| NACHES TOWN OF WA5358100 | Naches | 3,512 | — | — | Compliant |
| COLFAX WATER DEPARTMENT CITY OF WA5314000 | Colfax | 3,507 | — | — | Compliant |
| WINLOCK CITY OF WA5397500 | WINLOCK | 3,502 | — | — | Compliant |
| HORIZONS WEST WA5334375 | Tacoma | 3,454 | — | — | Compliant |
| ROYAL CITY WATER WA5374700 | Royal City | 3,389 | — | — | Compliant |
| CID #19-CORBIN WA5310223 | GREENACRES | 3,340 | — | — | Compliant |
| Tenino City of WA5387400 | TENINO | 3,336 | — | — | Compliant |
| GALES ADDITION LUD 2,3,6 WA5327090 | PORT ANGELES | 3,329 | — | — | Compliant |
| CONSOLIDATED IRRG.DIST.#19,SYS.#3 WA5310222 | GREENACRES | 3,300 | — | — | Compliant |
| DAYTON WATER DEPARTMENT WA5318250 | DAYTON | 3,283 | — | — | Compliant |
| WASHINGTON STATE PENITENTIARY WA5393140 | WALLA WALLA | 3,278 | — | — | Compliant |
| NEWPORT CITY OF WA5359350 | Newport | 3,258 | — | — | Compliant |
| OROVILLE CITY OF WA5364400 | Oroville | 3,256 | — | — | Compliant |
| Fox Island Mutual Water Assoc WA5326300 | Fox Island | 3,255 | — | — | Compliant |
| MUCKLESHOOT 105300013 | AUBURN | 3,250 | — | — | Compliant |
| BREWSTER CITY OF WA5308300 | Brewster | 3,235 | — | — | Compliant |
| Rock Island Water Dept City of WA5373401 | Rock Island | 3,226 | — | — | Compliant |
| AMES LAKE WATER ASSOC INC WA5302055 | Redmond | 3,224 | — | — | Compliant |
| NISQUALLY-LESCHI & WEST NISQUALLY 105300014 | OLYMPIA | 3,200 | — | — | Compliant |
| MT. VISTA - DUNGENESS GOLF COURSE 105388889 | SEQUIM | 3,200 | — | — | Compliant |
| STROHS WATER COMPANY INC WA5384670 | Tacoma | 3,192 | — | — | Compliant |
| ALGONA WATER DEPT WA5301450 | Algona | 3,180 | — | — | Compliant |
| LAKE FOREST PARK WATER DISTRICT WA5340950 | Lake Forest Park | 3,171 | — | — | Compliant |
| HIGHLAND WATER DISTRICT WA5332850 | Monroe | 3,121 | — | — | Compliant |
| MEADOWS 690 WA5387784 | Lacey | 3,100 | — | — | Compliant |
| NAPAVINE CITY OF WA5358200 | NAPAVINE | 3,095 | — | — | Compliant |
| OLYMPIC WATER & SEWER INC WA5368700 | PORT LUDLOW | 3,086 | — | — | Compliant |
| Snake River Housing Water System WA5300710 | Yakima | 3,036 | — | — | Compliant |
| Dry Creek Water Association WA5320050 | Port Angeles | 3,030 | — | — | Compliant |
| CARSON WA5311340 | CARSON | 3,015 | — | — | Compliant |
| FALL CITY WATER DIST. #127 WA5324550 | Fall City | 2,987 | — | — | Compliant |
| CLEARWOOD WA5313615 | Yelm | 2,956 | — | — | Compliant |
| CEDAR CREST WA5311887 | Tacoma | 2,954 | — | — | Compliant |
| South Bend Water Department WA5381500 | South Bend | 2,930 | — | — | Compliant |
| OKANOGAN WATER DEPARTMENT CITY OF WA5363200 | OKANOGAN | 2,921 | — | — | Compliant |
| ERLAND POINT WATER CO WA5323850 | SILVERDALE | 2,909 | — | — | Compliant |
| TOUTLE COMMUNITY REGIONAL WATER WA5388905 | Kelso | 2,904 | — | — | Compliant |
| STEVENS CO PUD - DEER LAKE WA5393380 | Loon Lake | 2,884 | — | — | Compliant |
| ALEXANDERS RESORT WA5301346 | SNOQUALMIE | 2,878 | — | — | Compliant |
| WESTERN STATE HOSPITAL WA5395150 | Port Orchard | 2,857 | — | — | Compliant |
| DESERT AIRE OWNER ASSN WA5319056 | Desert Aire | 2,856 | — | — | Compliant |
| HUTCHINSON IRRIGATION DIST #16 WA5335100 | Spokane Valley | 2,826 | — | — | Compliant |
| MCCORMICK WOODS WA5340529 | PORT ORCHARD | 2,760 | — | — | Compliant |
| WEST SEQUIM BAY INC WA5354192 | SEQUIM | 2,759 | — | — | Compliant |
| RAINIER WATER DEPARTMENT WA5370980 | RAINIER | 2,758 | — | — | Compliant |
| ILWACO WATER DEPARTMENT CITY OF WA5335500 | ILWACO | 2,757 | — | — | Compliant |
| MCCLEARY CITY OF WA5352250 | MCCLEARY | 2,753 | — | — | Compliant |
| GOLD BAR CITY OF WA5328300 | Goldbar | 2,745 | — | — | Compliant |
| SKI ACRES WATER SYSTEM WA5379700 | MERCER ISLAND | 2,733 | — | — | Compliant |
| KETTLE FALLS WATER DEPT WA5338400 | Kettle Falls | 2,698 | — | — | Compliant |
| SURFSIDE HOMEOWNERS WA5386470 | OCEAN PARK | 2,687 | — | — | Compliant |
| OLYMPIC MALL WA5363479 | Tacoma | 2,681 | — | — | Compliant |
| Columbia Valley Water District WA5366110 | Maple Falls | 2,648 | — | — | Compliant |
| SUNCADIA RESORT WA53AA317 | Cle Elum | 2,640 | — | — | Compliant |
| WHATCOM WTR DIST 10 - GENEVA WA5308117 | BELLINGHAM | 2,622 | — | — | Compliant |
| CHEWELAH WATER DEPT SOUTH WA5312750 | Chewelah | 2,615 | — | — | Compliant |
| SEA CLIFF ESTATES WA5376880 | Gig Harbor | 2,602 | — | — | Compliant |
| CAMANO ISLAND STATE PARK WA53SP125 | STANWOOD | 2,598 | — | — | Compliant |
| STEVENSON WATER DEPT WA5384250 | STEVENSON | 2,594 | — | — | Compliant |
| CAMANO WATER ASSOCIATION WA5310750 | Coupeville | 2,592 | — | — | Compliant |
| WASHINGTON STATE REFORMATORY WA5393150 | MONROE | 2,534 | — | — | Compliant |
| ASOTIN WATER DEPT WA5303250 | Asotin | 2,531 | — | — | Compliant |
| STEVENS CO PUD - LOON LAKE WA5348250 | Loon Lake | 2,487 | — | — | Compliant |
| MALAGA WATER DISTRICT WA5350500 | Malaga | 2,478 | — | — | Compliant |
| NOOKSACK WATER DEPT WA5359800 | Nooksack | 2,427 | — | — | Compliant |
| WILLAPA VALLEY WATER DISTRICT WA5397100 | Raymond | 2,425 | — | — | Compliant |
| BLACK DIAMOND WATER DEPT WA5307220 | BLACK DIAMOND | 2,420 | — | — | Compliant |
| SWINOMISH CASINO & LODGE 105338108 | LA CONNER | 2,400 | — | — | Compliant |
| CARNATION WATER SYSTEM CITY OF WA5311200 | Mount Vernon | 2,400 | — | — | Compliant |
| CHEROKEE BAY COMMUNITY CLUB INC WA5311626 | Port Orchard | 2,400 | — | — | Compliant |
| SOAP LAKE WATER DEPT WA5381300 | Quincy | 2,399 | — | — | Compliant |
| IONE WATER DEPT WA5335900 | Ion | 2,395 | — | — | Compliant |
| TONASKET WATER SYSTEM WA5388700 | Tonasket | 2,392 | — | — | Compliant |
| GLACIER WATER DISTRICT WA5395915 | Glacier | 2,383 | — | — | Compliant |
| PACIFIC BEACH/MOCLIPS WA5300333 | Montesano | 2,372 | — | — | Compliant |
| CRESCENT WATER ASSN WA5316020 | JOYCE | 2,360 | — | — | Compliant |
| TIMBERLAKE COMMUNITY CLUB INC WA5388370 | SHELTON | 2,337 | — | — | Compliant |
| BADGER MOUNTAIN IRRIGATION DISTRICT WA5322617 | Kennewick | 2,331 | — | — | Compliant |
| JACKSON PARK NAVAL HOSPITAL WA5305345 | Silverdale | 2,277 | — | — | Compliant |
| VALLEY WATER SYSTEM WA5301250 | Puyallup | 2,259 | — | — | Compliant |
| ALPINE WATER DISTRICT WA5325315 | Cashmere | 2,255 | — | — | Compliant |
| WEST KITSAP WA5308367 | Poulsbo | 2,248 | — | — | Compliant |
| KITTITAS CITY OF WA5342650 | Kittitas | 2,247 | — | — | Compliant |
| Darrington Town of WA5317950 | Darrington | 2,246 | — | — | Compliant |
| SUNLAND WATER DISTRICT WA5385260 | Sequim | 2,235 | — | — | Compliant |
| WASHINGTON CORRECTIONS CENTER WA5393063 | Shelton | 2,223 | — | — | Compliant |
| North Spokane Irrigation District 8 WA5361300 | SPOKANE | 2,214 | — | — | Compliant |
| BRIDGEPORT CITY OF WA5308350 | Bridgeport | 2,214 | — | — | Compliant |
| CLE ELUM WATER DEPARTMENT WA5313500 | Cle Elum | 2,213 | — | — | Compliant |
| SHELTER BAY COMMUNITY INC WA5378155 | La Conner | 2,212 | — | — | Compliant |
| ALDERBROOK WATER CO WA5301050 | UNION | 2,154 | — | — | Compliant |
| KCWD #4 WA5338700 | BURIEN | 2,150 | — | — | Compliant |
| MABTON CITY OF WA5349650 | Mabton | 2,150 | — | — | Compliant |
| LAKE LIMERICK WATER WA5344150 | Shelton | 2,148 | — | — | Compliant |
| MORTON CITY OF WA5356250 | MORTON | 2,147 | — | — | Compliant |
| KCWD #77 WA5340700 | SEATTLE | 2,135 | — | — | Compliant |
| LAKELAND VILLAGE WATER WA5345090 | Allyn | 2,120 | — | — | Compliant |
| SUNNYSLOPE WA5385550 | Shelton | 2,112 | — | — | Compliant |
| CARNHOPE IRRIGATION DISTRICT 7 WA5311250 | Spokane Valley | 2,104 | — | — | Compliant |
| ISLAND UTILITY WA5357776 | Poulsbo | 2,103 | — | — | Compliant |
| CID #19-EAST FARMS WA5310228 | GREENACRES | 2,100 | — | — | Compliant |
| ROSLYN CITY OF WA5374400 | Roslyn | 2,099 | — | — | Compliant |
| SANDY POINT IMPROVEMENT CO WA5376105 | Lynden | 2,098 | — | — | Compliant |
| MIRRORMONT WA5355250 | Tacoma | 2,083 | — | — | Compliant |
| NASELLE WA5358350 | Raymond | 2,073 | — | — | Compliant |
| HEIGHTS WATER WA5332300 | Vashon | 2,051 | — | — | Compliant |
| NISQUALLY PINES COMMUNITY CLUB WA5359591 | Port Orchard | 2,037 | — | — | Compliant |
| LAKERIDGE WATER DISTRICT WA5340250 | SEATTLE | 2,000 | — | — | Compliant |
| TULALIP SEWER DISTRICT NO 1 OR5300003 | MARYSVILLE | 2,000 | — | — | Compliant |
| NORMANDY PARK WATER COMPANY WA5359900 | SEATTLE | 1,985 | — | — | Compliant |
| ROCHE HARBOR WATER SYSTEM INC WA5373230 | Friday Harbor | 1,985 | — | — | Compliant |
| LEWIS CO WATER DIST #2 WA5347001 | Onalaska | 1,983 | — | — | Compliant |
| CLINTON WATER DISTRICT WA5313900 | CLINTON | 1,980 | — | — | Compliant |
| CURRAN ROAD MUTUAL WATER ASSN WA5316950 | TACOMA | 1,977 | — | — | Compliant |
| SKAGIT CO WATER DISTRICT #1 WA5300392 | Mount Vernon | 1,974 | — | — | Compliant |
| TOLEDO MUNICIPAL WA5388660 | TOLEDO | 1,944 | — | — | Compliant |
| MILLWOOD CITY OF WA5354850 | Spokane | 1,925 | — | — | Compliant |
| PALMER LAKE WA5365745 | Tacoma | 1,924 | — | — | Compliant |
| Anacortes - Fidalgo WA5300932 | Mt Vernon | 1,890 | — | — | Compliant |
| SUMMIT VIEW WATER SYSTEM WA5303303 | Kennewick | 1,869 | — | — | Compliant |
| WILDERNESS RIM ASSOCIATION WA5396878 | Falls City | 1,867 | — | — | Compliant |
| HOODSPORT WA5334100 | Shelton | 1,853 | — | — | Compliant |
| LAKE CUSHMAN MAINTENANCE CO WA5343794 | HOODSPORT | 1,850 | — | — | Compliant |
| ROCKY POINT WATER DISTRICT 12 WA5302052 | BREMERTON | 1,831 | — | — | Compliant |
| Waitsburg City of WA5392250 | Waitsburg | 1,817 | — | — | Compliant |
| COSMOPOLIS WATER DEPARTMENT WA5315050 | Raymond | 1,812 | — | — | Compliant |
| ELECTRIC CITY CITY OF WA5322850 | Electric City | 1,812 | — | — | Compliant |
| CANTERWOOD WATER SYSTEM WA5305859 | Gig Harbor | 1,805 | — | — | Compliant |
| HEATHER MEADOWS WA53FS375 | GLACIER | 1,805 | — | — | Compliant |
| KINGSTON WATER SYSTEM WA5342100 | POULSBO | 1,793 | — | — | Compliant |
| MOAB IRRIGATION DIST #20 WA5355440 | Newman lake | 1,790 | — | — | Compliant |
| TRACYTON WATER DISTRICT WA5315634 | SILVERDALE | 1,787 | — | — | Compliant |
| GLENHAVEN LAKES CLUB WA5328050 | Sedro Woolley | 1,780 | — | — | Compliant |
| CID #19-OTIS ORCHARDS WA5310236 | GREENACRES | 1,775 | — | — | Compliant |
| ROCHESTER WA5373300 | Rochester | 1,762 | — | — | Compliant |
| BINGEN WATER DEPT WA5306900 | Bingen | 1,758 | — | — | Compliant |
| YAK CO - C.C.D. WATER COMPANY WA5315500 | YAKIMA | 1,749 | — | — | Compliant |
| SUMAS WATER DEPT WA5384870 | Sumas | 1,740 | — | — | Compliant |
| Basin City Water Sewer District WA5304461 | Mesa | 1,740 | — | — | Compliant |
| ENTIAT CITY OF WA5323500 | Entiat | 1,730 | — | — | Compliant |
| RITZVILLE WATER DEPARTMENT WA5372700 | Ritzville | 1,725 | — | — | Compliant |
| DAVENPORT WATER DIVISION WA5318100 | Davenport | 1,720 | — | — | Compliant |
| INDIANOLA WATER WA5335650 | Poulsbo | 1,705 | — | — | Compliant |
| REPUBLIC CITY OF WA5371900 | Republic | 1,673 | — | — | Compliant |
| CATHLAMET WATER DEPT WA5311850 | Cathlamet | 1,636 | — | — | Compliant |
| SCOTT LAKE WA5376787 | Port Orchard | 1,604 | — | — | Compliant |
| RIVER BEND HOA WA5372750 | Snoqualmie | 1,603 | — | — | Compliant |
| SHOREWOOD APARTMENTS WA5378795 | MERCER ISLAND | 1,600 | — | — | Compliant |
| TAHOLAH 105300018 | TAHOLAH | 1,600 | — | — | Compliant |
| No Longer Exists 4 WA5352107 | VANCOUVER | 1,600 | — | — | Compliant |
| LA CONNER WATER DEPT WA5343350 | Laconner | 1,585 | — | — | Compliant |
| HANSVILLE WATER DIST WA5330950 | POULSBO | 1,561 | — | — | Compliant |
| CONSOLIDATED IRRIGATION DIST 14 WA5314650 | Walla Walla | 1,555 | — | — | Compliant |
| MOSSYROCK PUBLIC UTILITY CITY OF WA5356350 | Mossyrock | 1,553 | — | — | Compliant |
| POLE ROAD WATER ASSOCIATION WA5368350 | Lynden | 1,545 | — | — | Compliant |
| NAVAL BASE KITSAP AT KEYPORT WA5390520 | Silverdale | 1,540 | — | — | Compliant |
| LAKE MINTERWOOD WA5355210 | Tacoma | 1,539 | — | — | Compliant |
| PORT GAMBLE SKLALLAM 105300015 | KINGSTON | 1,509 | — | — | Compliant |
| THE MAKAH INDIAN TRIBE OR5300012 | NEAH BAY | 1,500 | — | — | Compliant |
| SQUAXIN CONSOLIDATED 105300146 | SHELTON | 1,500 | — | — | Compliant |
| TAPPS ISLAND WATER SYSTEM WA5387181 | Lake Tapps | 1,500 | — | — | Compliant |
| LUMMI WATER & SEWER SYSTEM OR5300002 | BELLINGHAM | 1,500 | — | — | Compliant |
| PORT SUSAN CAMP CLUB #1 105300090 | STANWOOD | 1,500 | — | — | Compliant |
| HYAK SKIING CORPORATION WA5335165 | SNOQUALMIE PASS | 1,500 | — | — | Compliant |
| BLANCHARD EDISON WATER ASSN. INC. WA5307450 | Bow | 1,480 | — | — | Compliant |
| SUNLAND ESTATES HOMEOWNERS ASSN WA5385240 | Quincy | 1,480 | — | — | Compliant |
| TIETON WATER DEPT CITY OF WA5388300 | Yakima | 1,475 | — | — | Compliant |
| GRAHAM HILL MUTUAL WATER CO INC WA5328650 | GRAHAM | 1,474 | — | — | Compliant |
| VIEW ROYAL WATER SYSTEM WA5328494 | Puyallup | 1,461 | — | — | Compliant |
| Hogans Corner WA53AA554 | Montesano | 1,458 | — | — | Compliant |
| QUINAULT BEACH RESORT 105300105 | OCEAN SHORES | 1,450 | — | — | Compliant |
| POINT ROBERTS WATER DISTRICT NO 4 WA5395750 | Point Roberts | 1,440 | — | — | Compliant |
| GRAND COULEE WATER DEPT CITY OF WA5328700 | Grand Coulee | 1,428 | — | — | Compliant |
| HIGH VALLEY COUNTRY CLUB WA5332700 | PACKWOOD | 1,425 | — | — | Compliant |
| REARDAN TOWN OF WA5371550 | Waverly | 1,418 | — | — | Compliant |
| LANGLEY CITY OF WA5345950 | Langley | 1,416 | — | — | Compliant |
| CID #19-WEST FARMS WA5310240 | GREENACRES | 1,415 | — | — | Compliant |
| POMEROY CITY OF WA5368400 | Pomeroy | 1,395 | — | — | Compliant |
| KALA POINT WA5337500 | PORT HADLOCK | 1,395 | — | — | Compliant |
| LAKE JOSEPHINE RIVIERA WA5343980 | Anderson Island | 1,380 | — | — | Compliant |
| HARBOR HILLS COMMUNITY WATER SYSTEM WA5333860 | Freeland | 1,373 | — | — | Compliant |
| KCWD #121 WA5341990 | ISSAQUAH | 1,360 | — | — | Compliant |
| COULEE DAM WATER DEPT WA5315400 | Coulee Dam | 1,359 | — | — | Compliant |
| Pelican Point By Cascadia LLC WA5366800 | Yakima | 1,357 | — | — | Compliant |
| WHATCOM COUNTY WATER DIST #2 WA5395700 | Bellingham | 1,353 | — | — | Compliant |
| WINTHROP TOWN OF WA5397750 | Winthrop | 1,350 | — | — | Compliant |
| NOOKSACK VALLEY WATER ASSOCIATION WA5359850 | Lynden | 1,343 | — | — | Compliant |
| EVERGREEN SHORES WA5324163 | Tacoma | 1,329 | — | — | Compliant |
| OAKVILLE CITY OF WA5362750 | OAKVILLE | 1,325 | — | — | Compliant |
| Shorecrest Estates Water Co WA5378620 | Shelton | 1,321 | — | — | Compliant |
| HARRAH WATER SYSTEM WA5331400 | Harrah | 1,304 | — | — | Compliant |
| GRAYS HARBOR CO WATER DIST 1 WA5329200 | Raymond | 1,302 | — | — | Compliant |
| MAKAH NEAH BAY 105300012 | NEAH BAY | 1,300 | — | — | Compliant |
| ST MARTINS COLLEGE WATER SYSTEM WA5375350 | LACEY | 1,300 | — | — | Compliant |
| DIAMOND LAKE WATER & SEWER DISTRICT WA5319207 | Newport | 1,299 | — | — | Compliant |
| PALOUSE WATER DEPT CITY OF WA5365800 | Palouse | 1,298 | — | — | Compliant |
| ALPENTAL SKI AREA WA5301820 | CLE ELUM | 1,288 | — | — | Compliant |
| NORTHWEST TREK WA5361990 | Eatonville | 1,283 | — | — | Compliant |
| CARLYON BEACH HOMEOWNERS WA5311159 | OLYMPIA | 1,273 | — | — | Compliant |
| WALLA WALLA UNIVERSITY WA5392470 | Walla Walla | 1,273 | — | — | Compliant |
| INDIAN SPRINGS WATER COMPANY WA5354686 | TACOMA | 1,265 | — | — | Compliant |
| FREELAND WATER AND SEWER DISTRICT WA5326450 | Freeland | 1,264 | — | — | Compliant |
| BC WATER CO WA53AA373 | Kennewick | 1,262 | — | — | Compliant |
| LAKEVIEW PARK WATER ASSN WA5345350 | Quincy | 1,259 | — | — | Compliant |
| CASCADE VIEW WATER DIST. WA5341995 | REDMOND | 1,245 | — | — | Compliant |
| CLALLAM BAY CORRECTIONS CENTER WA5305027 | CLALLAM BAY | 1,240 | — | — | Compliant |
| CHELAN RIVER IRRIGATION DISTRICT WA5312296 | CHELAN | 1,237 | — | — | Compliant |
| CID #19-GREEACRES WA5310232 | GREENACRES | 1,235 | — | — | Compliant |
| FROG POND WA5326627 | POUSLBO | 1,229 | — | — | Compliant |
| STEVENS CO PUD - WAITTS LAKE WA5391130 | Loon Lake | 1,216 | — | — | Compliant |
| EDGEWATER ESTATES WATER SYSTEM WA5322420 | POULSBO | 1,215 | — | — | Compliant |
| ROY CITY OF WA5345027 | ROY | 1,214 | — | — | Compliant |
| SWINOMISH 105300032 | LA CONNER | 1,212 | — | — | Compliant |
| WASHINGTON STATE CORRECTIONS-WOMEN WA5369945 | Gig Harbor | 1,205 | — | — | Compliant |
| KEYPORT WATER WA5338550 | Poulsbo | 1,202 | — | — | Compliant |
| WHITWORTH UNIVERSITY WA5396580 | Spokane | 1,200 | — | — | Compliant |
| Community Sewer and Water District WA5305966 | Kennewick | 1,200 | — | — | Compliant |
| WOODSMUIR WATER CORP WA5398375 | OLYMPIA | 1,200 | — | — | Compliant |
| TUKWILA, CITY OF DUWAMISH WA5339150 | TUKWILA | 1,200 | — | — | Compliant |
| FISHERMAN BAY WATER ASSOCIATION WA5325547 | Lopez Island | 1,195 | — | — | Compliant |
| WARM BEACH CONFERENCE GROUNDS WA5392950 | Mount Vernon | 1,190 | — | — | Compliant |
| LEWIS CO WATER DIST #1 WA5347000 | Napavine | 1,174 | — | — | Compliant |
| PONDEROSA COMMUNITY CLUB INC WA5368417 | Leavenworth | 1,170 | — | — | Compliant |
| Monse-Riggan Camp WA53AC141 | Brewster | 1,165 | — | — | Compliant |
| WEILER-MARTIN TRACTS WATER ASSN WA5394110 | Quincy | 1,163 | — | — | Compliant |
| BASIN WATER SOURCES INC WA5304600 | Cle Elum | 1,158 | — | — | Compliant |
| BREMERTON WEST 517 ZONE CITY OF WA5308273 | Bremerton | 1,158 | — | — | Compliant |
| MEADOWMEER WA5353275 | Port Orchard | 1,157 | — | — | Compliant |
| STEVENS CO PUD - LONG LAKE WA5384545 | LOON LAKE | 1,153 | — | — | Compliant |
| BOSTON HARBOR WA5307850 | Olympia | 1,153 | — | — | Compliant |
| SKOKOMISH 105300020 | SKOKOMISH NATION | 1,150 | — | — | Compliant |
| PATEROS WATER DEPARTMENT WA5366450 | Pateros | 1,149 | — | — | Compliant |
| NEWBERRY HILL WA5306136 | Poulsbo | 1,143 | — | — | Compliant |
| ASHFORD WATER DISTRICT WA5303200 | Ashford | 1,141 | — | — | Compliant |
| WATERVILLE TOWN OF WA5393600 | Waterville | 1,140 | — | — | Compliant |
| LA PUSH QUILEUTE TRIBE WA53IH457 | LA PUSH | 1,133 | — | — | Compliant |
| QUISTORFF WA5370550 | Tacoma | 1,113 | — | 12 | Exceeds |
| W&B WATERWORKS 1 WA5346670 | Freeland | 1,112 | — | — | Compliant |
| CRESCENT BAR SYSTEM WA5315950 | Ephrata | 1,108 | — | — | Compliant |
| QUINAULT INDIAN NATION OR5300018 | TAHOLAH (TAHOLAH) | 1,100 | — | — | Compliant |
| BEARDS COVE WA5305100 | Shelton | 1,100 | — | — | Compliant |
| TRAILS END UTILITY WA5389070 | TUMWATER | 1,096 | — | — | Compliant |
| TEKOA CITY OF WA5387300 | Tekoa | 1,076 | — | — | Compliant |
| SUNSHINE ACRES WA5386250 | Tacoma | 1,074 | — | — | Compliant |
| MILLER BAY WA5354683 | Poulsbo | 1,072 | — | — | Compliant |
| CAMANO CO-OP WATER & POWER CO WA5310600 | Mount Vernon | 1,071 | — | — | Compliant |
| WILKESON WATER DEPARTMENT WA5396950 | Wilkeson | 1,071 | — | — | Compliant |
| HOLIDAY RANCHETTES WA5333677 | Tacoma | 1,050 | — | — | Compliant |
| NORTH BONNEVILLE CITY OF WA5360150 | North Bonneville | 1,048 | — | — | Compliant |
| GAMBLEWOOD WATER SYSTEM WA5327125 | POULSBO | 1,044 | — | — | Compliant |
| TWISP TOWN OF WA5390050 | Twisp | 1,044 | — | — | Compliant |
| FAWN LAKE MAINTENANCE COMM WA5324713 | SHELTON | 1,044 | — | — | Compliant |
| ESTATES INC WA5308166 | SEQUIM | 1,043 | — | — | Compliant |
| SKY MEADOW WATER ASSN WA5380000 | Snohomish | 1,042 | — | — | Compliant |
| WILBUR TOWN OF WA5396800 | Marshall | 1,040 | — | — | Compliant |
| BAYVIEW BEACH WATER DISTRICT WA5305535 | Freeland | 1,035 | — | — | Compliant |
| GEORGE CITY OF WA5327395 | George | 1,035 | — | — | Compliant |
| ROSARIO WA5374270 | Tacoma | 1,031 | — | — | Compliant |
| CAPE GEORGE COLONY CLUB INC WA5311050 | BELFAIR | 1,022 | — | — | Compliant |
| SAMISH FARMS WATER ASSN WA5375645 | Bow | 1,017 | — | — | Compliant |
| Lake Quinault WA5370350 | QUINAULT | 1,003 | — | — | Compliant |
| SUNSERRA AT CRESCENT BAR WA53AA745 | Quincy | 1,000 | — | — | Compliant |
| SPOKANE CITY OF SPO. INT. AIRPORT WA5383030 | SPOKANE | 1,000 | — | — | Compliant |
| PORT SUSAN CAMP CLUB #3 105300092 | STANWOOD | 1,000 | — | — | Compliant |
| PORT SUSAN CAMP CLUB #2 105300091 | STANWOOD | 1,000 | — | — | Compliant |
| PACIFIC BEACH WA5365350 | PACIFIC BEACH | 1,000 | — | — | Compliant |
| UNDERWOOD WA5390200 | CARSON | 1,000 | — | — | Compliant |
| DOCKTON WATER ASSOCIATION WA5319550 | VASHON | 992 | — | — | Compliant |
| GLACIER SPRINGS WATER ASSN WA5327750 | Trout Lake | 992 | — | — | Compliant |
| VADER-ENCHANTED VALLEY WA5390900 | Chehalis | 985 | — | — | Compliant |
| The Buttes WA5308253 | Puyallup | 973 | — | — | Compliant |
| ILLAHEE OYEHUT WA5335450 | MONTESANO | 971 | — | — | Compliant |
| MARION WATER CO INC WA5351750 | Port Orchard | 966 | — | — | Compliant |
| BURTON WATER COOPERATIVE WA5309800 | Vashon | 964 | — | — | Compliant |
| YAK CO - BUENA WATER SYSTEM WA5334301 | Yakima | 952 | — | — | Compliant |
| BEACHCREST WA5304981 | LACEY | 950 | — | — | Compliant |
| COULEE CITY TOWN OF WA5315300 | Coulee City | 944 | — | — | Compliant |
| STEVENS CO PUD - LOON LAKE SW WA5303724 | LOON LAKE | 944 | — | — | Compliant |
| CAPE HORN MAINTENANCE COMPANY WA5311060 | Mount Vernon | 940 | — | — | Compliant |
| LYLE WATER SYSTEM WA5349000 | Goldendale | 938 | — | — | Compliant |
| LAKELAND VILLAGE WA5321726 | MEDICAL LAKE | 934 | — | — | Compliant |
| PRESTON INDUSTRIAL PARK WATER ASSN WA5318879 | Port Orchard | 930 | — | — | Compliant |
| KCWD #69, SKYWAY WA5340450 | SEATTLE | 930 | — | — | Compliant |
| WOODBROOK JR HIGH SCHOOL WA5398135 | TACOMA | 927 | — | — | Compliant |
| SUNWOOD LAKES HOMEOWNERS ASSOC INC WA5386304 | Port Orchard | 925 | — | — | Compliant |
| LONG LAKE VIEW EST 2 5 WA5348031 | Poulsbo | 923 | — | — | Compliant |
| PUGET ISLAND WA5369760 | CATHLAMET | 920 | — | — | Compliant |
| LAKE CUSHMAN SYSTEM 3 WA5303528 | Hoodsport | 917 | — | — | Compliant |
| COUNTRY/ELDORADO WATER SYSTEM WA5315522 | Puyallup | 915 | — | — | Compliant |
| LAKE LAWRENCE WA5322572 | Tacoma | 914 | — | — | Compliant |
| TRIBAL COMPLEX 105300025 | TOPPENISH | 907 | — | — | Compliant |
| LIND TOWN OF WA5347350 | Lind | 903 | — | — | Compliant |
| STRAWBERRY HILL TRACTS WA5384622 | OAK HARBOR | 900 | — | — | Compliant |
| SCATCHET HEAD WATER DISTRICT WA5376470 | Coupeville | 900 | — | — | Compliant |
| WHITE SWAN 105300026 | TOPPENISH | 900 | — | — | Compliant |
| Solmar Water WA5381315 | Sequim | 895 | — | — | Compliant |
| QUILEUTE WATER SYSTEM 105300016 | LA PUSH | 885 | — | — | Compliant |
| ISLAND LAKE WA5336150 | Freeland | 883 | — | — | Compliant |
| CARBONADO WATER DEPT WA5311100 | Carbonado | 875 | — | — | Compliant |
| ROLLING HILLS-GLENCAIRN WA5374000 | Oak Harbor | 872 | — | — | Compliant |
| Admirals Cove Water District WA5300410 | Freeland | 870 | — | — | Compliant |
| LAKE OF THE WOODS COMMUNITY CLUB WA5344387 | Gig Harbor | 870 | — | — | Compliant |
| ADAMS COUNTY WATER DIST #1 WA5322525 | Othello | 870 | — | — | Compliant |
| PE ELL TOWN OF WA5366750 | PE ELL | 859 | — | — | Compliant |
| JEFFERSON COUNTY LUD #3 WA5300058 | Port Townsend | 840 | — | — | Compliant |
| ROSALIA TOWN OF WA5374250 | Rosalia | 831 | — | — | Compliant |
| ENUMCLAW GOLF COURSE WA5323580 | ENUMCLAW | 829 | — | — | Compliant |
| HANGMAN HILLS WATER DIST 15 WA5330848 | Marshall | 827 | — | — | Compliant |
| CAMALOCH ASSOCIATION WA5310580 | Coupeville | 825 | — | — | Compliant |
| CONCRETE UTILITIES WA5303950 | Mount Vernon | 810 | — | — | Compliant |
| DIAMOND POINT WA5319210 | Freeland | 810 | — | — | Compliant |
| WSDH-GRANITE LAKE REST AREA WA53HD270 | SPOKANE | 800 | — | — | Compliant |
| VASHON ISLAND WATER & ROAD ASS WA5391404 | BELLEVUE | 800 | — | — | Compliant |
| Little Creek Casino/Trading Post 105300097 | Shelton | 800 | — | — | Compliant |
| FIRCREST SCHOOL / DSHS WA5318666 | SEATTLE | 800 | — | — | Compliant |
| ST JOHN TOWN OF WA5375300 | Washtucna | 800 | — | — | Compliant |
| ROSEDALE EAST WA5309490 | Tacoma | 798 | — | — | Compliant |
| WHATCOM COUNTY WATER DIST 13 WA5395914 | Maple Falls | 795 | — | — | Compliant |
| MERCER CREST WATER ASSOC WA5353600 | MERCER IS | 795 | — | — | Compliant |
| WESTERN WAHKIAKUM WA5395167 | CATHLAMET | 791 | — | — | Compliant |
| ADAMS VIEW 105300042 | WAPATO | 790 | — | — | Compliant |
| VALLE LINDO HOMES WA5392475 | Walla Walla | 787 | — | — | Compliant |
| VETERANS AFFAIR MED CTR DEPT OF WA5390542 | Yakima | 785 | — | — | Compliant |
| GREEN MEADOWS ATHLETIC CLUB PUBLIC WA5328361 | VANCOUVER | 783 | — | — | Compliant |
| HILLCREST VILLAGE WATER CO INC WA5333150 | Mount Vernon | 770 | — | — | Compliant |
| SCENIC SHORES WATER COMPANY WA5376530 | Port Orchard | 761 | — | — | Compliant |
| NORTHGATE TERRACE COMMUNITY CLUB WA5361750 | Coupeville | 750 | — | — | Compliant |
| LAKE HOLIDAY ASSOCIATION WA5383600 | Port Orchard | 740 | — | — | Compliant |
| Lewis Co Water Sewer Dist #6 WA5344240 | Mossyrock | 740 | — | — | Compliant |
| PINECREST WA5367621 | TACOMA | 738 | — | — | Compliant |
| LOST LAKE PROPERTY OWNERS ASSN WA5348345 | Coupeville | 736 | — | — | Compliant |
| STEVENS CO PUD - CLAYTON WA5313450 | Loon Lake | 725 | — | — | Compliant |
| LYNCH COVE WA5349100 | Freeland | 721 | — | — | Compliant |
| SUN COVE PUBLIC WATER SYSTEM WA5385124 | Cashmere | 716 | — | — | Compliant |
| LYMAN WATER DEPARTMENT WA5349050 | Mount Vernon | 705 | — | — | Compliant |
| FIR MEADOWS WATER COMPANY, INC. WA5325145 | TACOMA | 705 | — | — | Compliant |
| LARCH CORRECTIONS CENTER WA5306461 | YACOLT | 705 | — | — | Compliant |
| UNION WA5351920 | UNION | 700 | — | — | Compliant |
| CLOVER CREEK ELEMENTARY WA5313902 | TACOMA | 700 | — | — | Compliant |
| KITTITAS COUNTY WATER DISTRICT #5 WA5342704 | Cle Elum | 699 | — | — | Compliant |
| OAK PARK WA5362675 | SHELTON | 695 | — | — | Compliant |
| MCNEIL ISLAND WATER WA5352900 | Tumwater | 692 | — | — | Compliant |
| Grandview Condominiums WA53AE050 | Port Orchard | 679 | — | — | Compliant |
| BLUE HORIZON WA5330321 | Tacoma | 678 | — | — | Compliant |
| CUSICK TOWN OF WA5317000 | Cusick | 672 | — | — | Compliant |
| NORTHERN STATE MULTI SERV. CENTER WA5361700 | SEDRO WOOLLEY | 670 | — | — | Compliant |
| CHINOOK WATER DISTRICT WA5312800 | Chinook | 664 | — | — | Compliant |
| WILDERNESS RIDGE COMMUNITY CLUB WA5396876 | Coupeville | 664 | — | — | Compliant |
| WHITWORTH WATER DIST. #2 WA5313941 | SPOKANE | 660 | — | — | Compliant |
| Great Basin Water Burbank WA5331477 | Pasco | 656 | — | — | Compliant |
| DEL MAR COMMUNITY SERVICE WA5318580 | Anacortes | 654 | — | — | Compliant |
| HARRINGTON CITY OF WA5331450 | Waverly | 650 | — | — | Compliant |
| THREE LAKES WATER DISTRICT WA5388140 | Malaga | 650 | — | — | Compliant |
| ISLAND CROSSING WA5307618 | ARLINGTON | 650 | — | — | Compliant |
| VISTAIRE WATER SYSTEM WA5357414 | Clinton | 647 | — | — | Compliant |
| LIBERTY LAKE SEWER DISTRICT WA5347148 | LIBERTY LAKE | 645 | — | — | Compliant |
| FAIRFIELD TOWN OF WA5324450 | Tekoa | 643 | — | — | Compliant |
| WASHINGTON SOLDIERS HOME COLONY WA5364700 | Port Orchard | 643 | — | — | Compliant |
| CEDAR CREEK CORRECTIONS CENTER WA5311882 | Littlerock | 639 | — | — | Compliant |
| JAW FARMS INC WA5308246 | Malott | 636 | — | — | Compliant |
| ALDERWOOD ESTATES WA5301270 | Puyallup | 635 | — | — | Compliant |
| DUCK LAKE WATER ASSOCIATION WA5320200 | Okanogan | 635 | — | — | Compliant |
| COLTON WATER DEPARTMENT WA5314100 | Colton | 632 | — | — | Compliant |
| GLENWOOD WATER SYSTEM WA5328220 | Goldendale | 629 | — | — | Compliant |
| PRIEST POINT BEACH WATER INC WA5369450 | Arlington | 624 | — | — | Compliant |
| BRIDGEHAVEN COMMUNITY CLUB WA5308330 | PORT LUDLOW | 623 | — | — | Compliant |
| CHEHALIS TRIBAL HOUSING 105300027 | OAKVILLE | 620 | — | — | Compliant |
| MECCA COMMUNITY ASSOCIATION WA5322888 | Coupeville | 619 | — | — | Compliant |
| WICKS LAKE RANCHES WA5396728 | Tacoma | 615 | — | — | Compliant |
| KCWD #1 WA5302331 | BELLEVUE | 615 | — | — | Compliant |
| RIDGE WATER ASSOCIATION WA5303456 | Spokane | 615 | — | — | Compliant |
| LACAMAS FARMSTEADS WA5302117 | Tacoma | 615 | — | — | Compliant |
| SUMAS RURAL WATER ASSOCIATION WA5384850 | Sumas | 612 | — | — | Compliant |
| LEWIS CO WATER DIST #3 WA5365550 | Randle | 611 | — | — | Compliant |
| SEABECK WA5303134 | Poulsbo | 610 | — | — | Compliant |
| MCKENNA WATER DISTRICT WA5303521 | MCKENNA | 600 | — | — | Compliant |
| YAKIMA INDIAN NATION OR5300026 | TOPPENISH (WHITE SWAN) | 600 | — | — | Compliant |
| SPO CO WATER DIST 3, SYS 7 WA5393357 | Spokane | 600 | — | — | Compliant |
| JEFFERSON COUNTY WATER DIST #1 WA5336705 | Port Ludlow | 600 | — | — | Compliant |
| BYWATER BAY WA5302043 | Port Townsend | 600 | — | — | Compliant |
| NORTH END WATER USERS WA5360450 | OROVILLE | 600 | — | — | Compliant |
| JEFFERSON BEACH WA5336700 | KINGSTON | 600 | — | — | Compliant |
| WISHRAM WATER SYSTEM WA5397950 | Goldendale | 599 | — | — | Compliant |
| DALLESPORT WATER DISTRICT WA5317715 | Dallesport | 598 | — | — | Compliant |
| SANDY HOOK PARK COMMUNITY CLUB WA5375950 | Port Orchard | 593 | — | — | Compliant |
| METALINE FALLS TOWN OF WA5354250 | Newport | 593 | — | — | Compliant |
| ASPEN ESTATES 105300140 | TULALIP | 592 | — | — | Compliant |
| CAMANO VISTA WATER DISTRICT WA5310748 | Coupeville | 591 | — | — | Compliant |
| SHENANDOAH FOREST WATER SYSTEM WA5325397 | LIBERTY LAKE | 580 | — | — | Compliant |
| MEADOWBROOK WATER ASSOCIATION WA5353250 | Lynden | 579 | — | — | Compliant |
| BAY CENTER WA5304815 | RAYMOND | 579 | — | — | Compliant |
| BUCODA WATER DEPT WA5309100 | BUCODA | 579 | — | — | Compliant |
| RAFT ISLAND WA5370760 | Tacoma | 575 | — | — | Compliant |
| WEBSTONE WATER DISTRICT WA5301609 | PACIFIC | 570 | — | — | Compliant |
| SPRAGUE CITY OF WA5383150 | Sprague | 570 | — | — | Compliant |
| Rogers Group Properties I LLC WA5389470 | North Bend | 570 | — | — | Compliant |
| ROCKFORD TOWN OF WA5373550 | Rockford | 570 | — | — | Compliant |
| CONSOLIDATED SUPPORT SERVICES WA5321850 | Medical lake | 569 | — | — | Compliant |
| NORTH WHIDBEY WATER DISTRICT WA5361603 | Oak Harbor | 568 | — | — | Compliant |
| ACME WATER DISTRICT NO 18 WA5300250 | Acme | 568 | — | — | Compliant |
| WESTSIDE WATER ASSN WA5394950 | Vashion Island | 562 | — | — | Compliant |
| KEY CENTER WATER SYSTEM WA5338450 | Gig Harbor | 561 | — | — | Compliant |
| TAHUYEH LAKE COMMUNITY CLUB WA5387116 | Port Orchard | 560 | — | — | Compliant |
| CALADONIA MUTUAL WATER CO WA5310500 | TACOMA | 560 | — | — | Compliant |
| WOODBROOK TERRACE APTS WA5355225 | TACOMA | 560 | — | — | Compliant |
| DUNGENESS HEIGHTS WA5320425 | Yelm | 558 | — | — | Compliant |
| RAINIER SCHOOL WA5370850 | Buckley | 556 | — | — | Compliant |
| ALBION WATER DEPT WA5300800 | Albion | 555 | — | — | Compliant |
| GREEN TANK IRR DISTRICT 11 WA5329550 | Walla Walla | 553 | — | — | Compliant |
| KLICKITAT WATER SYSTEM WA5342800 | Goldendale | 551 | — | — | Compliant |
| STEVENS CO PUD - VALLEY WA5305520 | Loon Lake | 550 | — | — | Compliant |
| CRESCENT PARK 355 WA5316000 | Lacey | 550 | — | — | Compliant |
| FOXHALL WA5310991 | Tacoma | 549 | — | — | Compliant |
| BREWSTER FLAT DOMESTIC WATER ASSN WA5308290 | Brewster | 542 | — | — | Compliant |
| SOUTH CLE ELUM WATER DEPT WA5381600 | South Cle Elum | 541 | — | — | Compliant |
| HAMILTON WATER DEPARTMENT WA5330700 | Maple Falls | 540 | — | — | Compliant |
| OLD SETTLERS WATER ASSOCIATION WA5363350 | Custer | 540 | — | — | Compliant |
| SANDY HOOK YACHT CLUB ESTATES WA5376050 | Freeland | 540 | — | — | Compliant |
| INCHELIUM WATER DISTRICT WA5335550 | Tonasket | 540 | — | — | Compliant |
| LAKE CUSHMAN SYSTEM #10 WA5303530 | HOODSPORT | 540 | — | — | Compliant |
| KCWD #88 WA5341100 | SEATTLE | 540 | — | — | Compliant |
| SHORE ACRES WATER COMPANY WA5378455 | Gig Harbor | 540 | — | — | Compliant |
| MADRONA BEACH COMM WATER SYSTEM WA5349954 | STANWOOD | 539 | — | — | Compliant |
| EAST SIDE LIBERTY LAKE IMP CLUB WA5347145 | Liberty Lake | 537 | — | — | Compliant |