CHESTER WATER AUTHORITY

PWSID: PA1230004 · CHESTER, PA · Serving 140,437 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)

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

5.1 ppt

Highest single detection

Highest detection

Pro feature

2024-08-08

Latest sample date

partial

Data completeness

All PFAS detection results

Source: EPA UCMR5 (UCMR5) · 116 compounds tested

Contaminant	Result (ppt)	MCL (ppt)	Status	Sample date
PFHxS	ND	10	Below MRL	2024-11-13
PFEESA	ND	—	Below MRL	2024-11-13

114 more results hidden