CITY OF VACAVILLE

PWSID: CA4810008 · ELMIRA, CA · Serving 97,000 people

Type: CWSOwner: LSource: SW

Settlement eligible

May qualify for 3M/DuPont settlement funds

Exceeds MCL

One or more PFAS compounds exceed EPA Maximum Contaminant Levels. Corrective action required by 2031.

PFOA5.1 ppt(MCL: 4 ppt)

PFOS10 ppt(MCL: 4 ppt)

EPA MCL: 4 ppt (parts per trillion) for PFOA and PFOS individually. Compliance deadline: 2031-12-31

Exact contamination levels

Upgrade to Pro to see PFOA/PFOS ppt values and MCL comparison charts.

PFAS compounds detected

45 ppt

Highest single detection

Highest detection

Pro feature

2025-09-11

Latest sample date

complete

Data completeness

All PFAS detection results

Source: EPA UCMR5 (UCMR5) · 609 compounds tested

Contaminant	Result (ppt)	MCL (ppt)	Status	Sample date
PFUnA	ND	—	Below MRL	2023-11-15
PFTrDA	ND	—	Below MRL	2023-11-15

607 more results hidden