Know Your Environment. Protect Your Health.

Perfluorooctane sulfonate (PFOS)

Aquarion Water Company of Connecticut - Greenwich System

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.

 

12

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND90ND
2015ND30ND
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
2019N/A00N/A
2020N/A00N/A
2021N/A00N/A
2022N/A00N/A
2023N/A00N/A

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
2014-04-01201404020466AMND
2014-04-01201404020496AMND
2014-04-01201404020547AMND
2014-07-07201407080373AMND
2014-07-07201407080377AMND
2014-07-07201407080375AMND
2014-10-16201410180110AMND
2014-10-16201410180094AMND
2014-10-16201410180096AMND
2015-01-06201501070580AMND
2015-02-04201502050741AMND
2015-02-04201502050737AMND