Know Your Environment. Protect Your Health.

Perfluorooctane sulfonate (PFOS)

Wilton Water & Sewer Authority

Perfluorooctane sulfonate (PFOS) is a member of a group of perfluorinated chemicals used in many consumer products. PFOS and other perfluorinated chemicals can cause serious health effects, including cancer, endocrine disruption, accelerated puberty, liver and immune system damage, and thyroid changes. These chemicals are persistent in the environment and they accumulate in people. Click here to read more about perfluorinated chemicals.

 

21

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014N/A00N/A
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
2019N/A00N/A
2020ND30ND
2021ND30ND
2022ND30ND
2023ND120ND

ppt = parts per trillion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.3 ppt

The EWG Health Guideline of 0.3 ppt for PFOS was defined by EPA's final toxicity value from the Office of Water’s Final Human Health Toxicity Assessment. This health guideline protects againat cardiovascular harm and harm to fetal growth.

EPA Maximum Contaminant
Level (MCL): 4 ppt

ppt = parts per trillion

All test results

Date Lab ID Result
2020-10-14JH2007944-PFOA/PFOSND
2020-10-14JH2007945-PFOA/PFOSND
2020-10-14JH2007943-PFOA/PFOSND
2021-01-11JH2100248-PFOA/PFOSND
2021-01-11JH2100250-PFOA/PFOSND
2021-01-11JH2100249-PFOA/PFOSND
2022-08-05JH2206876-PFASND
2022-08-05JH2206877-PFASND
2022-08-05JH2206875-PFASND
2023-03-13102365PND
2023-03-13102366PND
2023-03-13102367PND
2023-03-13102368PND
2023-05-08JH2303303-PFASND
2023-05-08JH2303304-PFASND
2023-07-11106400RND
2023-09-18108008PND
2023-09-18108009PND
2023-09-18108010PND
2023-09-18108011PND
2023-12-12111310PND