Pennsylvania PFAS compliance
PFAS contamination data for 500 water systems in Pennsylvania, serving 19,810,348 people.
Total systems
500
Exceed MCL
107
At risk
1
Compliant
218
Settlement eligible
191
Pennsylvania PFAS regulatory overview
State standards
State standardsPennsylvania has its own PFAS standards
PFOA MCL: 14 ppt(EPA: 4 ppt)
PFOS MCL: 18 ppt(EPA: 4 ppt)
PA MCLs: PFOA 14 ppt, PFOS 18 ppt. Adopted 2023. Also set MCLs for PFBS (18 ppt) and PFHxS (18 ppt) and GenX (8 ppt).
Regulatory agency
Pennsylvania adopted some of the strictest state PFAS MCLs in 2023. GenX MCL of 8 ppt is notably strict. Significant contamination near military bases and industrial sites.
Get weekly PFAS compliance alerts for Pennsylvania
Water systems
| System | City | Population | PFOA (ppt) | PFOS (ppt) | Status |
|---|---|---|---|---|---|
| PHILADELPHIA WATER DEPARTMENT PA1510001 | PHILADELPHIA | 1,600,000 | 8.1 | 6 | Exceeds |
| AQUA PA MAIN SYSTEM PA1460073 | BRYN MAWR | 822,600 | 12.6 | 9.2 | Exceeds |
| PA AMER WATER CO-PITTSBURGH PA5020039 | MCMURRAY | 686,000 | — | — | Compliant |
| PITTSBURGH WATER & SEWER AUTH PA5020038 | PITTSBURGH | 520,000 | — | — | Compliant |
| ERIE CITY WATER AUTHORITY PA6250028 | ERIE | 220,001 | — | — | Compliant |
| YORK WATER CO PA7670100 | YORK | 206,762 | — | — | Compliant |
| WEST VIEW WATER AUTHORITY PA5020043 | PITTSBURGH | 200,000 | — | — | Compliant |
| MAWC SWEENEY PLANT PA5650032 | GREENSBURG | 143,000 | — | — | Compliant |
| CHESTER WATER AUTHORITY PA1230004 | CHESTER | 140,437 | 5.1 | — | Exceeds |
| PA AMER WATER CO LAKE SCRANTON PA2359008 | WILKES BARRE | 134,570 | 4.9 | 7.6 | Exceeds |
| MAWC YOUGH PLANT PA5260036 | GREENSBURG | 133,000 | — | — | Compliant |
| WILKINSBURG-PENN JT WATER AUTH PA5020056 | WILKINSBURG | 125,000 | — | — | Compliant |
| CITY OF LANCASTER PA7360058 | LANCASTER | 120,000 | 23.8 | — | Exceeds |
| LCA ALLENTOWN DIVISION PA3390024 | ALLENTOWN | 118,000 | — | 4.4 | Exceeds |
| CITY OF BETHLEHEM PA3480046 | BETHLEHEM | 117,259 | — | — | Compliant |
| VEOLIA WATER PA7220015 | HARRISBURG | 110,000 | — | — | Compliant |
| PA AMERICAN WATER CO WEST PA7210029 | MECHANICSBURG | 105,127 | 4.9 | 10.4 | Exceeds |
| EASTON AREA WATER SYSTEM PA3480050 | EASTON | 96,867 | — | — | Compliant |
| READING AREA WATER AUTHORITY PA3060059 | READING | 95,100 | 6.6 | — | Exceeds |
| NORTH PENN WATER AUTHORITY PA1460034 | LANSDALE | 91,941 | 5.1 | — | Exceeds |
| PA AMERICAN NORRISTOWN PA1460046 | NORRISTOWN | 88,885 | — | — | Compliant |
| NORTH WALES WATER AUTHORITY PA1460048 | NORTH WALES | 72,496 | 13 | 11.1 | Exceeds |
| STATE COLLEGE BORO WATER AUTH PA4140096 | STATE COLLEGE | 72,000 | — | — | Compliant |
| CAPITAL REGION WATER PA7220049 | HARRISBURG | 66,540 | — | — | Compliant |
| LOWER BUCKS CO JOINT MUN AUTH PA1090026 | LEVITTOWN | 63,007 | — | — | Compliant |
| ALTOONA WATER AUTHORITY PA4070023 | ALTOONA | 62,500 | — | — | Compliant |
| HAMPTON SHALER WATER AUTHORITY PA5020019 | ALLISON PARK | 61,949 | — | — | Compliant |
| AQUA PA BENSALEM PA1090078 | BRYN MAWR | 59,001 | 8 | 7.5 | Exceeds |
| PAW CEASETOWN PA2409002 | SCRANTON | 58,467 | — | — | Compliant |
| LEBANON WATER AUTH PA7380010 | LEBANON | 57,000 | — | — | Compliant |
| PAW NESBITT PA2409010 | SCRANTON | 52,640 | — | — | Compliant |
| BCWSA MAIN LOWER SOUTH PA1090079 | WARRINGTON | 52,621 | 7.3 | 6.9 | Exceeds |
| PAW WATRES PA2409011 | SCRANTON | 52,002 | — | — | Compliant |
| WILLIAMSPORT MUN WATER AUTH PA4410173 | WILLIAMSPORT | 51,000 | — | 5.1 | Exceeds |
| PA AMER WATER CO PA7220017 | HUMMELSTOWN | 50,200 | 4.3 | — | Exceeds |
| BEAVER FALLS MUNI AUTH PA5040012 | BEAVER FALLS | 49,500 | 5.4 | 4 | Exceeds |
| GREATER JOHNSTOWN WA RIVERSIDE PA4110034 | JOHNSTOWN | 49,500 | — | — | Compliant |
| AQUA PA WEST CHESTER PA1150098 | BRYN MAWR | 48,600 | 5.9 | — | Exceeds |
| MONROEVILLE MUNICIPAL AUTH PA5020027 | MONROEVILLE | 48,500 | — | — | Compliant |
| AQUA PA SHENANGO VALLEY WTP PA6430054 | SHARON | 48,000 | — | — | Compliant |
| NEW KENSINGTON MUNI AUTH PA5650070 | NEW KENSINGTON | 47,800 | — | — | Compliant |
| LCA WLSA CENTRAL DIVISION PA3390073 | ALLENTOWN | 47,693 | 4.4 | — | Exceeds |
| PA AMERICAN ROYERSFORD PA1150166 | SPRING CITY | 46,847 | 9.1 | 10.7 | Exceeds |
| VEOLIA MECHANICSBURG PA7210028 | HARRISBURG | 45,013 | 7.1 | 11.4 | Exceeds |
| HCA HAZLETON DIVISION PA2408001 | HAZLETON | 45,000 | — | — | Compliant |
| PA AMERICAN WATER CO BUTLER PA5100012 | NEW CASTLE | 43,286 | — | — | Compliant |
| PA AMER WATER CO NEW CASTLE PA6370034 | NEW CASTLE | 43,279 | — | — | Compliant |
| AQUA PA ROARING CREEK DIVISION PA4490024 | SHAMOKIN | 43,000 | — | — | Compliant |
| CRANBERRY TWP WTP PA5100094 | CRANBERRY TWP | 42,000 | — | — | Compliant |
| HANOVER MUNI WATER WORKS PA7670076 | HANOVER | 40,900 | — | — | Compliant |
| SOUTHWESTERN PA WATER AUTH PA5300017 | JEFFERSON | 40,000 | — | — | Compliant |
| NORTHAMPTON BORO MUNI AUTH PA3480057 | NORTHAMPTON | 40,000 | — | — | Compliant |
| WARMINSTER MUNICIPAL AUTHORITY PA1090069 | WARMINSTER | 40,000 | — | — | Compliant |
| OAKMONT WATER AUTHORITY PA5020036 | OAKMONT | 39,901 | — | — | Compliant |
| NEWTOWN ARTESIAN WATER CO PA1090043 | NEWTOWN | 38,500 | 12.3 | 7.9 | Exceeds |
| MOON TWP MUNI AUTH PA5020011 | MOON TOWNSHIP | 38,000 | — | 10 | Exceeds |
| PENN STATE UNIV PA4140095 | UNIVERSITY PARK | 37,000 | — | — | Compliant |
| PA AMERICAN COATESVILLE PA1150106 | COATESVILLE | 36,960 | — | — | Compliant |
| NORTHAMPTON BUCKS CO MUN AUTH PA1090089 | RICHBORO | 36,750 | 19.6 | 23 | Exceeds |
| POTTSTOWN BOROUGH WATER AUTH PA1460037 | POTTSTOWN | 36,000 | — | — | Compliant |
| AQUA PA UWCHLAN PA1150035 | BRYN MAWR | 35,518 | 9.3 | 7.1 | Exceeds |
| NORTH FAYETTE CNTY MUNI AUTH PA5260019 | DUNBAR | 35,409 | — | — | Compliant |
| PA AMERICAN WATER CO YARDLEY PA1090074 | YARDLEY | 33,171 | 9.7 | 6.1 | Exceeds |
| WEST CNTY MUNI AUTH-MCKEESPORT PA5020025 | GREENSBURG | 32,644 | — | — | Compliant |
| SCHUYLKILL CO MUN AUTH PA3540038 | POTTSVILLE | 31,850 | — | — | Compliant |
| CHAMBERSBURG BORO WATER SYS PA7280005 | CHAMBERSBURG | 31,048 | — | — | Compliant |
| PA AMERICAN WHITE DEER PA4490023 | MILTON | 30,209 | — | — | Compliant |
| LATROBE MUNI AUTH PA5650060 | LATROBE | 30,000 | — | — | Compliant |
| BRODHEAD CREEK REG WATER AUTH PA2450034 | EAST STROUDSBURG | 30,000 | — | — | Compliant |
| VEOLIA WATER PA INC BLOOMSBURG PA4190008 | BLOOMSBURG | 29,382 | — | — | Compliant |
| AQUA PA BRISTOL PA1090001 | BRYN MAWR | 28,727 | 4.5 | — | Exceeds |
| PAW PENN DISTRICT PA3060069 | READING | 28,508 | 6.5 | 16.4 | Exceeds |
| GUILFORD WATER AUTH PA7280038 | CHAMBERSBURG | 28,135 | — | — | Compliant |
| PLUM BORO MUNI AUTH PA5020041 | PITTSBURGH | 27,500 | — | — | Compliant |
| AUTH OF BORO OF CHARLEROI PA5630039 | CHARLEROI | 27,000 | — | — | Compliant |
| PITTSBURGH INTL AIRPORT PA5020947 | PITTSBURGH | 26,915 | — | 7 | Exceeds |
| MIFFLIN CNTY MUNI AUTH PA4440010 | MILROY | 26,765 | — | — | Compliant |
| CARLISLE WATER TRMT PLT PA7210002 | CARLISLE | 26,000 | 5 | 11.3 | Exceeds |
| HORSHAM WATER&SEWER AUTHORITY PA1460033 | HORSHAM | 26,000 | 17.5 | 33.8 | Exceeds |
| COLUMBIA WATER CO PA7360123 | COLUMBIA | 25,200 | — | — | Compliant |
| PAW GLEN ALSACE DIV PA3060088 | MECHANICSBURG | 24,951 | 5.8 | 12.7 | Exceeds |
| EPHRATA AREA JOINT AUTHORITY PA7360045 | EPHRATA | 24,500 | 5.8 | 4.6 | Exceeds |
| FALLS TWP WATER & SEWER DEPT PA1090022 | FAIRLESS HILLS | 24,400 | — | — | Compliant |
| PAW BLUE MOUNTAIN DIVISION PA3480055 | CLARKS SUMMIT | 23,763 | — | — | Compliant |
| PA-AMERICAN WATER- UNIONTOWN PA5260020 | UNIONTOWN | 23,125 | — | — | Compliant |
| HIGHLAND S & W AUTH BEAVERDAM PA4110017 | JOHNSTOWN | 22,617 | — | — | Compliant |
| PA AMERICAN WATER CO-INDIANA D PA5320025 | NEW CASTLE | 22,360 | — | — | Compliant |
| NWWA WARRINGTON TOWNSHIP PA1090070 | NORTH WALES | 21,588 | — | — | Compliant |
| DOVER TWP WATER SYS PA7670073 | DOVER | 21,097 | 5.9 | 9.6 | Exceeds |
| MUHLENBERG TWP MUNI AUTH PA3060038 | READING | 21,000 | 8.8 | 11.5 | Exceeds |
| EAST HEMPFIELD WATER AUTH PA7360063 | LANDISVILLE | 20,988 | 7.7 | 5 | Exceeds |
| PAW PHILIPSBURG PA4140087 | PHILIPSBURG | 20,784 | — | — | Compliant |
| AMBLER BORO WATER DEPT PA1460020 | AMBLER | 20,000 | 15.3 | 13.7 | Exceeds |
| ST MARYS AREA WATER AUTH PA6240016 | SAINT MARYS | 19,588 | — | — | Compliant |
| AMBRIDGE WATER AUTH PA5040008 | AMBRIDGE | 19,500 | — | — | Compliant |
| WESTERN ALLEGHENY COUNTY MUN A PA5020034 | OAKDALE | 19,031 | — | 5.2 | Exceeds |
| ELIZABETHTOWN AREA WATER PA7360124 | ELIZABETHTOWN | 19,000 | — | 5.7 | Exceeds |
| CENTER TWP WATER AUTH PA5040007 | ALIQUIPPA | 19,000 | — | — | Compliant |
| FOX CHAPEL AUTH PA5020040 | PITTSBURGH | 18,500 | — | — | Compliant |
| BRADFORD CITY WATER AUTHORITY PA6420014 | BRADFORD | 18,500 | — | — | Compliant |
| PAWC POCONO DISTRICT PA2450063 | TOBYHANNA | 17,860 | 5.7 | 5.2 | Exceeds |
| SHIPPENSBURG BORO WATER AUTH PA7210043 | SHIPPENSBURG | 17,800 | — | — | Compliant |
| MEADVILLE AREA WATER AUTHORITY PA6200036 | MEADVILLE | 17,339 | — | — | Compliant |
| PA AMER WATER CO ELLWOOD CTY PA6370011 | NEW CASTLE | 17,200 | — | — | Compliant |
| PA AMERICAN WATER CO CLARION PA6160001 | NEW CASTLE | 16,600 | — | — | Compliant |
| PHOENIXVILLE WATER DEPT PA1150077 | PHOENIXVILLE | 16,599 | 5.9 | 5.1 | Exceeds |
| ROBINSON TWP MUNI AUTH PA5020045 | PITTSBURGH | 16,354 | — | — | Compliant |
| UPPER SOUTHAMPTON MUN AUTH PA1090063 | SOUTHAMPTON | 16,000 | 14.2 | 16.4 | Exceeds |
| HIGHRIDGE WATER AUTH PA5650069 | BLAIRSVILLE | 16,000 | 4.3 | 4.5 | Exceeds |
| RED LION MUNICIPAL AUTHORITY PA7670086 | RED LION | 15,882 | — | — | Compliant |
| SLIPPERY ROCK MUNI AUTH PA5100079 | SLIPPERY ROCK | 15,778 | — | — | Compliant |
| MUN WATER AUTH OF ALIQUIPPA PA5040006 | ALIQUIPPA | 15,685 | — | — | Compliant |
| AQUA PA SUSQUEHANNA DIVISION PA2080028 | SAYRE | 15,569 | — | — | Compliant |
| PA AMERICAN WATER BERWICK PA4190013 | MILTON | 15,282 | 7.9 | 4 | Exceeds |
| MT JOY BORO AUTH PA7360091 | MOUNT JOY | 15,261 | — | — | Compliant |
| PERKASIE REGIONAL AUTHORITY PA1090046 | SELLERSVILLE | 15,000 | 6.5 | 17.6 | Exceeds |
| CRESWELL HEIGHTS JT AUTH PA5040063 | SOUTH HEIGHTS | 15,000 | — | — | Compliant |
| WARWICK TWP WATER & SEWER AUTH PA1090127 | JAMISON | 14,699 | 7.6 | 7.1 | Exceeds |
| PA AMERICAN WATER CO WARREN PA6620020 | WARREN | 14,650 | — | — | Compliant |
| SWT MAIN SYSTEM PA3390065 | ALLENTOWN | 14,500 | 4 | — | At risk |
| KUTZTOWN BOROUGH WATER PA3060041 | KUTZTOWN | 14,200 | — | — | Compliant |
| EMMAUS BOROUGH PUBLIC WATER PA3390032 | EMMAUS | 14,000 | 22.4 | 153 | Exceeds |
| CLEARFIELD MUNICIPAL AUTH PA6170008 | CLEARFIELD | 14,000 | — | — | Compliant |
| HUNTINGDON BORO WATER DEPT PA4310012 | HUNTINGDON | 13,776 | — | — | Compliant |
| HARRISON TWP WATER AUTH PA5020108 | NATRONA HEIGHTS | 13,411 | — | — | Compliant |
| MORRISVILLE MUNIC AUTHORITY PA1090037 | MORRISVILLE | 13,342 | — | — | Compliant |
| SHILLINGTON MUNI AUTH PA3060067 | READING | 13,300 | — | — | Compliant |
| BORO OF WAYNESBORO PA7280032 | WAYNESBORO | 13,200 | — | — | Compliant |
| WHITEHALL TWP AUTHORITY PA3390081 | WHITEHALL | 13,063 | 4.9 | 5.4 | Exceeds |
| E STROUDSBURG BORO WATER DEPT PA2450023 | EAST STROUDSBURG | 13,000 | — | — | Compliant |
| AQUA PA HATBORO PA1460028 | BRYN MAWR | 12,901 | 16.2 | 21.5 | Exceeds |
| QUAKERTOWN BORO PA1090082 | QUAKERTOWN | 12,800 | 10.8 | 14.3 | Exceeds |
| BEAR VALLEY JOINT AUTH PA7280043 | ST THOMAS | 12,589 | — | — | Compliant |
| PA AMER WATER CO BROWNELL PA2359001 | WILKES BARRE | 12,560 | — | — | Compliant |
| SUMMIT TOWNSHIP WATER AUTHORIT PA6250090 | ERIE | 12,500 | — | — | Compliant |
| GETTYSBURG MUNI AUTH PA7010019 | GETTYSBURG | 12,425 | 7.4 | 14.1 | Exceeds |
| DALLASTOWN YOE WATER AUTH PA7670085 | DALLASTOWN | 12,300 | — | — | Compliant |
| PAW HUNTSVILLE PA2409013 | SCRANTON | 11,987 | — | — | Compliant |
| SOUTH MIDDLETON TWP WATER AUTH PA7210050 | BOILING SPRINGS | 11,695 | — | — | Compliant |
| FINDLAY TWP MUNICIPAL AUTH PA5020078 | CLINTON | 11,460 | — | — | Compliant |
| PA-AMERICAN WATER CO-CONNELLSV PA5260022 | UNIONTOWN | 11,425 | — | — | Compliant |
| AQUA PA SUPERIOR MAIN SYSTEM PA1460085 | BRYN MAWR | 11,400 | 11.8 | 5.8 | Exceeds |
| HUMBOLDT INDUSTRIAL PARK PA2400806 | HAZLETON | 11,243 | — | — | Compliant |
| MUNICIPAL AUTHORITY SUNBURY PA4490007 | SUNBURY | 11,043 | — | — | Compliant |
| MT PENN BORO MUNI AUTH PA3060082 | READING | 10,400 | — | 5.7 | Exceeds |
| RICHLAND TWP WATER AUTHORITY PA5020018 | GIBSONIA | 10,190 | — | — | Compliant |
| TRI CNTY JT MUNI AUTH PA5630045 | FREDERICKTOWN | 10,100 | — | — | Compliant |
| CITY OF LOCK HAVEN WATER DEPT PA4180048 | LOCK HAVEN | 10,000 | — | — | Compliant |
| WEST MANCHESTER TWP AUTH PA7670101 | YORK | 9,960 | — | 6.2 | Exceeds |
| DOWNINGTOWN WATER AUTHORITY PA1150026 | DOWNINGTOWN | 9,900 | 4.2 | — | Exceeds |
| PAW CRYSTAL LAKE PA2409003 | SCRANTON | 9,773 | — | — | Compliant |
| SUBURBAN LOCK HAVEN WATER AUTH PA4180049 | MILL HALL | 9,700 | — | — | Compliant |
| ICMSA CROOKED CREEK PA5320109 | INDIANA | 9,638 | — | — | Compliant |
| OIL CITY PA6610023 | OIL CITY | 9,608 | — | — | Compliant |
| VEOLIA MIDDLETOWN PA7220038 | MIDDLETOWN | 9,600 | 7.5 | 12.7 | Exceeds |
| MYERSTOWN WATER AUTH PA7380025 | MYERSTOWN | 9,500 | — | — | Compliant |
| BELLEFONTE BOROUGH WATER AUTH PA4140075 | BELLEFONTE | 9,500 | — | — | Compliant |
| AQUA SHENANDOAH PA3540044 | SHAMOKIN | 9,500 | — | — | Compliant |
| WINDBER AREA AUTH PA4560013 | WINDBER | 9,463 | — | — | Compliant |
| LITITZ BORO PA7360126 | LITITZ | 9,397 | — | — | Compliant |
| LANSFORD COALDALE JT WATER AUT PA3130004 | LANSFORD | 9,300 | — | — | Compliant |
| MUNI AUTH OF WASHINGTON TWP PA5260009 | BELLE VERNON | 9,100 | — | — | Compliant |
| PAW BANGOR DISTRICT PA3480038 | CLARKS SUMMIT | 9,008 | — | — | Compliant |
| LEHIGHTON WATER AUTHORITY PA3130009 | LEHIGHTON | 9,000 | — | — | Compliant |
| AQUA PA FRIENDSHIP PA1150137 | BRYN MAWR | 8,800 | 7.7 | 9.5 | Exceeds |
| PA AMERICAN WATER PUNXSY PA6330010 | NEW CASTLE | 8,800 | — | — | Compliant |
| DOYLESTOWN BORO WATER DEPT PA1090081 | DOYLESTOWN | 8,700 | 14.6 | 11.3 | Exceeds |
| MUNICIPAL WATER AUTH ADAMS TWP PA5100141 | MARS | 8,700 | — | — | Compliant |
| DTMA MAIN SYSTEM PA1090128 | DOYLESTOWN | 8,655 | 14.2 | 13.4 | Exceeds |
| GREENVILLE MUNI WATER AUTH PA6430037 | GREENVILLE | 8,600 | — | — | Compliant |
| GENERAL AUTHORITY OF FRANKLIN PA6610020 | FRANKLIN | 8,600 | — | — | Compliant |
| WARWICK TWP LITITZ SYS PA7360116 | LITITZ | 8,561 | — | — | Compliant |
| MERCK AND CO INC PA1461065 | WEST POINT | 8,550 | — | — | Compliant |
| HOLLIDAYSBURG MUNI AUTH PA4070017 | HOLLIDAYSBURG | 8,523 | — | — | Compliant |
| SALISBURY TWP WATER SYSTEM PA3390062 | ALLENTOWN | 8,522 | 4.5 | 4.2 | Exceeds |
| DILLSBURG AREA AUTHORITY PA7670071 | DILLSBURG | 8,506 | 4.8 | 4.7 | Exceeds |
| WYOMISSING BORO WATER SYSTEM PA3060083 | WYOMISSING | 8,500 | 4.7 | — | Exceeds |
| EBENSBURG BORO MUNI AUTH PA4110009 | EBENSBURG | 8,500 | — | — | Compliant |
| COLLEGEVILLE TRAPPE JOINT PWD PA1460022 | TRAPPE | 8,470 | 235 | 15 | Exceeds |
| N MIDDLETON WATER AUTH PA7210049 | CARLISLE | 8,455 | 8 | 16.9 | Exceeds |
| HOUTZDALE MUNICIPAL AUTHORITY PA6170023 | HOUTZDALE | 8,410 | — | — | Compliant |
| HEMLOCK FARMS (MAIN) PA2520033 | LORDS VALLEY | 8,321 | — | — | Compliant |
| WELLSBORO MUNICIPAL AUTHORITY PA2590042 | WELLSBORO | 8,225 | — | — | Compliant |
| UPMC PRESBYTERIAN PA5020808 | PITTSBURGH | 8,200 | — | — | Compliant |
| PA AMERICAN AUDUBON PA1460055 | NORRISTOWN | 8,200 | 30.8 | 57.9 | Exceeds |
| AQUA PA SPRING RUN PA1150089 | BRYN MAWR | 8,151 | 6.8 | 4.4 | Exceeds |
| KITTANNING SUBURB JT WATER AUT PA5030043 | ADRIAN | 8,000 | — | — | Compliant |
| BOYERTOWN MUNI AUTH PA3060081 | BOYERTOWN | 8,000 | — | — | Compliant |
| TAMAQUA AREA WATER AUTHORITY PA3540012 | TAMAQUA | 8,000 | — | — | Compliant |
| BUCKS COUNTY COMMUNITY COLLEGE PA1090962 | NEWTOWN | 8,000 | 7.1 | — | Exceeds |
| MILLERSVILLE UNIV PA7360127 | MILLERSVILLE | 7,950 | 5.4 | 5.3 | Exceeds |
| BRIGHTON TWP MUNI AUTH PA5040017 | BEAVER | 7,920 | — | — | Exceeds |
| GROVE CITY BORO WATER DEPT PA6430040 | GROVE CITY | 7,871 | — | — | Compliant |
| PA-AMERICAN WATER-BROWNSVILLE PA5260005 | MCMURRY | 7,844 | — | — | Compliant |
| VEOLIA WATER BETHEL PA1230012 | HARRISBURG | 7,809 | 22.3 | — | Exceeds |
| EDINBORO WATER AUTHORITY PA6250022 | EDINBORO | 7,800 | — | — | Compliant |
| MUNICIPAL AUTHORITY OF CORRY PA6250012 | CORRY | 7,800 | — | — | Compliant |
| CONEMAUGH TWP MUNI AUTH PA4560048 | DAVIDSVILLE | 7,800 | — | — | Compliant |
| CITY OF DUBOIS WATER DEPART PA6170016 | DUBOIS | 7,794 | — | — | Compliant |
| EDGEWORTH BORO MUNI AUTH PA5020015 | LEETSDALE | 7,781 | — | — | Compliant |
| UPPER LEACOCK TOWNSHIP PA7360140 | LEOLA | 7,734 | 8.1 | 9.5 | Exceeds |
| TELFORD BOROUGH AUTHORITY PA1460050 | TELFORD | 7,700 | 14.9 | 15.2 | Exceeds |
| WERNERSVILLE MUNI WATER AUTH PA3060076 | WERNERSVILLE | 7,654 | 4.2 | — | Exceeds |
| HOLLYWOOD GAMING @ MVRC OH5055013 | WYOMISSING | 7,625 | — | — | Compliant |
| VEOLIA WATER PA DALLAS PA2400076 | HARRISBURG | 7,563 | 4.1 | 7.9 | Exceeds |
| MAIDENCREEK TWP WATER AUTH PA3060012 | BLANDON | 7,505 | — | — | Compliant |
| LITTLESTOWN BORO PA7010022 | LITTLESTOWN | 7,300 | 4.5 | 12.9 | Exceeds |
| UPPER SAUCON TWP WATER SUPPLY PA3390077 | CENTER VALLEY | 7,300 | — | — | Compliant |
| MINERSVILLE MUNICIPAL WATER AU PA3540035 | MINERSVILLE | 7,275 | — | — | Compliant |
| BLYTHE TWP MUNICIPAL AUTHORITY PA3540017 | NEW PHILADELPHIA | 7,100 | — | — | Compliant |
| WOMELSDORF ROBESONIA JT AUTH PA3060080 | NEWMANSTOWN | 7,070 | — | — | Compliant |
| PAWC SAW CREEK ESTATES PA2520062 | BUSHKILL | 7,016 | — | — | Compliant |
| INDIAN CREEK VALLEY WATER AUTH PA5260011 | INDIAN HEAD | 7,000 | — | — | Compliant |
| PALMERTON MUNICIPAL AUTHORITY PA3130012 | PALMERTON | 7,000 | 42.5 | 40 | Exceeds |
| MT AIRY CASINO & RESORT PA2450677 | MOUNT POCONO | 7,000 | — | — | Compliant |
| RICHLAND TWP WATER AUTHORITY PA1090131 | QUAKERTOWN | 6,800 | 7.1 | 8.3 | Exceeds |
| SEWICKLEY BORO WATER AUTH PA5020050 | SEWICKLEY | 6,800 | — | — | Compliant |
| NEVILLE TWP WATER DEPT PA5020029 | PITTSBURGH | 6,750 | — | — | Compliant |
| MANOR TWP JT MUNI AUTH PA5030006 | FORD CITY | 6,744 | — | — | Compliant |
| EAST COCALICO TOWNSHIP PA7360113 | DENVER | 6,735 | 4.5 | 4.9 | Exceeds |
| VA PITTSBURGH UD PA5020955 | PITTSBURGH | 6,701 | — | — | Compliant |
| MANHEIM AREA WATER & SEWER AUT PA7360078 | MANHEIM | 6,701 | 12.8 | 7.9 | Exceeds |
| KLINE TOWNSHIP MUN AUTHORITY PA3540014 | MCADOO | 6,700 | — | — | Compliant |
| HARMONY BORO WATER AUTH PA5100042 | HARMONY | 6,669 | — | — | Compliant |
| JERSEY SHORE AREA JNT WAT AUTH PA4410156 | JERSEY SHORE | 6,600 | — | — | Compliant |
| CATASAUQUA MUN WATER WORKS PA3390044 | CATASAUQUA | 6,598 | — | — | Compliant |
| AQUA PA FAWN LAKE FOREST PA2520037 | HONESDALE | 6,533 | — | — | Compliant |
| OUTLET SHOPS AT GETTYSBURG PA7010952 | GETTYSBURG | 6,500 | 4.5 | 4.4 | Exceeds |
| PORTAGE BORO MUNI AUTH PA4110027 | PORTAGE | 6,500 | — | — | Compliant |
| DERRY BORO MUNI AUTH PA5650049 | DERRY | 6,500 | — | — | Compliant |
| MONACA BORO WATER DEPT PA5040039 | MONACA | 6,500 | — | — | Exceeds |
| TYRONE BORO WATER AUTH PA4070021 | TYRONE | 6,500 | — | — | Compliant |
| VEOLIA NEWBERRY SYSTEM PA7670061 | HARRISBURG | 6,480 | 10 | 10 | Exceeds |
| GEISINGER MEDICAL CENTER PA4470012 | DANVILLE | 6,442 | — | — | Compliant |
| PA AMERICAN WATER STEELTON PA7220036 | HUMMELSTOWN | 6,428 | — | — | Compliant |
| KENNETT SQUARE MUN WATER WORKS PA1150108 | KENNETT SQUARE | 6,328 | 17.7 | 14.4 | Exceeds |
| SOMERSET BORO MUNI WATER AUTH PA4560042 | SOMERSET | 6,309 | — | — | Compliant |
| BROOKVILLE MUNICIPAL AUTH PA6330004 | BROOKVILLE | 6,220 | — | — | Compliant |
| EAST PETERSBURG BOROUGH PA7360135 | EAST PETERSBURG | 6,215 | 6.3 | 15.2 | Exceeds |
| EAST PENN MFG CO PA3060681 | LYON STATION | 6,170 | — | — | Compliant |
| TITUSVILLE MUNICIPAL WATER PA6200051 | TITUSVILLE | 6,146 | — | 5.7 | Exceeds |
| WASHINGTON TWP MUNI AUTH PA7280026 | WAYNESBORO | 6,134 | — | — | Compliant |
| SCHUYLKILL HAVEN BORO WATER PA3540041 | SCHUYLKILL HAVEN | 6,000 | — | — | Compliant |
| COLLEGE TWP WATER AUTHORITY PA4140082 | STATE COLLEGE | 6,000 | — | — | Compliant |
| BELLE VERNON BORO MUNI AUTH PA5260004 | BELLE VERNON | 6,000 | — | — | Compliant |
| PENN NATIONAL GAMING PA7220059 | GRANTVILLE | 6,000 | — | — | Compliant |
| AQUA PA CHALFONT PA1090005 | BRYN MAWR | 5,900 | 8.8 | 19 | Exceeds |
| BUFFALO TWP MUN AUTH FREEPORT PA5030019 | SARVER | 5,849 | — | — | Compliant |
| ALBION BOROUGH PA6250007 | ALBION | 5,842 | — | — | Compliant |
| CORAOPOLIS WATER & SEWER AUTH PA5020010 | CORAOPOLIS | 5,804 | 5.2 | 18.8 | Exceeds |
| MT UNION MUNICIPAL AUTH PA4310016 | MOUNT UNION | 5,801 | — | — | Compliant |
| HELLERTOWN BOROUGH AUTHORITY PA3480052 | HELLERTOWN | 5,800 | — | — | Compliant |
| BEAVER BORO MUNI AUTH PA5040009 | BEAVER | 5,799 | 7 | 4.9 | Exceeds |
| HILLTOWN TWP WATER&SEWER AUTH PA1090117 | SELLERSVILLE | 5,770 | 8 | 6.8 | Exceeds |
| PA AMERICAN WATER CO KANE PA6420019 | NEW CASTLE | 5,725 | — | — | Compliant |
| LOWER SAUCON AUTHORITY PA3480027 | BETHLEHEM | 5,700 | — | — | Compliant |
| MAHANOY TWP AUTH PA3540011 | MAHANOY CITY | 5,584 | — | — | Compliant |
| SELINSGROVE MUNI AUTH PA4550005 | SELINSGROVE | 5,584 | — | — | Compliant |
| PA AM WATER CO-FRACKVILLE DIST PA3540032 | MILTON | 5,583 | — | 15 | Exceeds |
| DUQUESNE WATER DEPT PA5020012 | DUQUESNE | 5,565 | — | — | Compliant |
| GREENCASTLE AREA WATER AUTH PA7280014 | GREENCASTLE | 5,500 | — | — | Compliant |
| AQUA PA WATER CO HONESDALE PA2640018 | WHITE HAVEN | 5,500 | — | — | Compliant |
| NEW HOLLAND BOROUGH PA7360099 | NEW HOLLAND | 5,500 | 5.1 | 8.3 | Exceeds |
| BIRDSBORO MUNI WATER AUTH PA3060010 | BIRDSBORO | 5,353 | — | — | Compliant |
| TUNKHANNOCK BORO MUNIC AUTH PA2660014 | TUNKHANNOCK | 5,349 | 4.8 | 6.6 | Exceeds |
| OXFORD BOROUGH PA1150066 | OXFORD | 5,280 | 4.3 | — | Exceeds |
| STEWARTSTOWN BORO WATER AUTH PA7670062 | STEWARTSTOWN | 5,206 | 4.6 | 4.1 | Exceeds |
| ROCKVIEW SCI PA4140098 | BELLEFONTE | 5,200 | — | 5.1 | Exceeds |
| SCHWENKSVILLE BOROUGH AUTH PA1460042 | SCHWENKSVILLE | 5,200 | 5.4 | 8.3 | Exceeds |
| MUN AUTH OF BORO OF BEDFORD PA4050002 | BEDFORD | 5,127 | — | — | Compliant |
| AQUA PA FLYING HILLS WA SYS PA3060018 | BRYN MAWR | 5,100 | 6.3 | 6.4 | Exceeds |
| SHARPSVILLE BORO WATER CO PA6430055 | SHARPSVILLE | 5,029 | — | — | Compliant |
| TOWANDA MUNICIPAL AUTHORITY PA2080029 | TOWANDA | 5,000 | — | — | Compliant |
| DANVILLE MUNICIPAL WATER AUTH PA4470007 | DANVILLE | 4,992 | — | — | Compliant |
| HAMBURG MUNI WATER&SEWER AUTH PA3060035 | HAMBURG | 4,990 | — | — | Compliant |
| MONTOURSVILLE WATER COMPANY PA4410175 | MONTOURSVILLE | 4,983 | 6.6 | 12.1 | Exceeds |
| TARENTUM BORO WATER DEPT PA5020055 | TARENTUM | 4,927 | — | — | Compliant |
| CENTRAL INDIANA CO WATER AUTH PA5320040 | HOMER CITY | 4,920 | — | — | Compliant |
| UPMC MAGEE WOMENS HOSPITAL PA5020883 | PITTSBURGH | 4,900 | — | — | Compliant |
| LONDON GROVE TWP MUN AUTH PA1150165 | WEST GROVE | 4,770 | — | — | Compliant |
| BUCKINGHAM TWP COLD SPRING PA1090137 | BUCKINGHAM | 4,760 | 22 | 19.3 | Exceeds |
| UPMC SHADYSIDE HILLMAN CAMPUS PA5020898 | PITTSBURGH | 4,750 | — | — | Compliant |
| SHREWSBURY BOROUGH PA7670088 | SHREWSBURY | 4,727 | 5.9 | 11.2 | Exceeds |
| RIDGWAY BOROUGH WATER SYSTEM PA6240012 | RIDGWAY | 4,700 | — | — | Compliant |
| FAWN FRAZER JT WATER AUTH PA5020076 | NATRONA HEIGHTS | 4,650 | — | — | Compliant |
| PA AMERICAN WATER KITTANNING PA5030008 | NEW CASTLE | 4,617 | — | — | Compliant |
| FREELAND BORO MUNI WATER AUTH PA2400054 | FREELAND | 4,610 | 5.6 | 9.1 | Exceeds |
| NORTH EAST BOROUGH WATER DEPT PA6250061 | NORTH EAST | 4,601 | — | — | Compliant |
| MILLERSBURG WATER AUTH PA7220034 | MILLERSBURG | 4,600 | 4.5 | 10 | Exceeds |
| UPPER HANOVER WATER AUTHORITY PA1460036 | EAST GREENVILLE | 4,600 | 6.2 | 5.5 | Exceeds |
| NORTH SEWICKLEY MUN WATER AUTH PA5040010 | BEAVER FALLS | 4,578 | — | — | Compliant |
| FAIRVIEW TWP WATER DISTRICT 1 PA6250087 | FAIRVIEW | 4,500 | — | — | Compliant |
| PIKE TWP MUNICIPAL AUTHORITY PA6170013 | CURWENSVILLE | 4,500 | — | — | Compliant |
| SENECA & CRANBERRY MALL DIST PA6610031 | SENECA | 4,500 | — | — | Compliant |
| NEW WILMINGTON BORO WATER DEPT PA6370035 | NEW WILMINGTON | 4,500 | — | — | Compliant |
| UPMC MONTEFIORE PA5020806 | PITTSBURGH | 4,500 | — | — | Compliant |
| NORTHERN CAMBRIA MUNI WATER PA4110003 | NORTHERN CAMBRIA | 4,500 | — | — | Compliant |
| MILFORD TWP WATER AUTHORITY PA1090125 | SPINNERSTOWN | 4,497 | — | — | Compliant |
| NEW FREEDOM BORO WATER AUTH PA7670082 | NEW FREEDOM | 4,464 | — | — | Compliant |
| SLATINGTON BOROUGH WATER SYS PA3390039 | SLATINGTON | 4,450 | — | — | Compliant |
| MIFFLINTOWN MUNI AUTH PA4340008 | MIFFLINTOWN | 4,450 | — | — | Compliant |
| FRANKLIN SYSTEM YORK WATER PA7280045 | YORK | 4,400 | — | — | Compliant |
| SOUTHWESTERN CAMBRIA CNTY AUTH PA4110041 | JOHNSTOWN | 4,400 | — | — | Compliant |
| BROCKWAY BORO MUNICIPAL AUTH PA6330002 | BROCKWAY | 4,384 | — | — | Compliant |
| WEST EARL WATER AUTHORITY PA7360143 | BROWNSTOWN | 4,327 | — | — | Compliant |
| AQUA PA JENKS TWP WTP PA6270008 | SHARON | 4,320 | — | — | Compliant |
| WEST READING BORO WATER PA3060078 | WEST READING | 4,300 | 4.2 | — | Exceeds |
| PENN ESTATES UTILITIES INCORP PA2450065 | EAST STROUDSBURG | 4,300 | — | — | Compliant |
| NEW SEWICKLEY TWP MUNI AUTH PA5040085 | ROCHESTER | 4,276 | — | — | Compliant |
| CAERNARVON TWP AUTH PA3060052 | MORGANTOWN | 4,245 | 55.8 | — | Exceeds |
| PA AMER WATER CO SUSQUEHANNA PA2580024 | WILKES BARRE | 4,230 | — | — | Compliant |
| FLEETWOOD BORO WATER SYSTEM PA3060029 | FLEETWOOD | 4,218 | — | — | Compliant |
| AKRON BOROUGH PA7360128 | AKRON | 4,200 | 5 | 4.4 | Exceeds |
| ASHLAND AREA WATER AUTHORITY PA3540030 | ASHLAND | 4,200 | — | 17 | Exceeds |
| PA AMERICAN DILLINER SYSTEM PA5300012 | DILLINER | 4,200 | — | — | Compliant |
| AQUA PA INC TREASURE LAKE DIV PA6170048 | SHARON | 4,155 | — | — | Compliant |
| ZELIENOPLE BORO PA5100093 | ZELIENOPLE | 4,123 | 4.2 | — | Exceeds |
| MANSFIELD BOROUGH MUN AUTH PA2590038 | MANSFIELD | 4,100 | — | — | Compliant |
| WRIGHTSVILLE BORO MUNI AUTH PA7670097 | WRIGHTSVILLE | 4,076 | — | — | Compliant |
| EAST DONEGAL PA7360083 | COLUMBIA | 4,048 | — | — | Compliant |
| BLAIRSVILLE MUNI AUTH PA5320006 | BLAIRSVILLE | 4,023 | — | — | Compliant |
| TILDEN INDUSTRIAL PARK PA3061067 | HAMBURG | 4,000 | — | — | Compliant |
| KNOEBELS GROVE PARK PA4190398 | ELYSBURG | 4,000 | — | — | Compliant |
| NEW OXFORD MUNCI AUTH PA7010025 | NEW OXFORD | 3,963 | 4.3 | 4.8 | Exceeds |
| BADEN BORO WATER DEPT PA5040080 | BADEN | 3,948 | — | — | Compliant |
| SHOHOLA FALLS TRAILS END SYS#2 PA2520941 | SHOHOLA | 3,933 | — | — | Compliant |