RIPON, CITY OF

PWSID: CA3910007 · RIPON, CA · Serving 15,741 people

Type: CWSOwner: LSource: GW

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.

PFOA5.2 ppt(MCL: 4 ppt)

PFOS12 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

9.93 ppt

Highest single detection

Highest detection

Pro feature

2024-07-31

Latest sample date

partial

Data completeness

All PFAS detection results

Source: EPA UCMR5 (UCMR5) · 434 compounds tested

Contaminant	Result (ppt)	MCL (ppt)	Status	Sample date
PFPeS	ND	—	Below MRL	2025-01-14
HFPO-DA	ND	10	Below MRL	2024-07-31

432 more results hidden