Know Your Environment. Protect Your Health.

Perfluorooctane sulfonate (PFOS)

Manchester Water Department

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.

 

24

Samples

0

Samples exceeding legal limit (MCL)

6

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014N/A00N/A
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
2019N/A00N/A
2020N/A00N/A
2021N/A00N/A
2022N/A00N/A
20233.68 ppt62ND - 16.0 ppt
20241.98 ppt184ND - 16.0 ppt

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
2023-10-1735835875001SE1ND
2023-10-1735835875003SE1ND
2023-10-1735835875011SE16.10 ppt
2023-10-1735835875009SE116.0 ppt
2023-10-1735835875007SE1ND
2023-10-1735835875005SE1ND
2024-01-2435856427001SE2ND
2024-01-2435856427009SE2ND
2024-01-2435856427007SE26.00 ppt
2024-01-2435856427005SE2ND
2024-01-2435856427003SE2ND
2024-02-2135862488001SE1ND
2024-04-2335875612005SE3ND
2024-04-2335875612003SE3ND
2024-04-2335875626003SE216.0 ppt
2024-04-2335875612007SE37.50 ppt
2024-04-2435875626001SE2ND
2024-04-2435875612001SE3ND
2024-04-2435875612009SE3ND
2024-07-2235894139005SE4ND
2024-07-2235894139003SE4ND
2024-07-2235894139001SE4ND
2024-07-2235894139007SE46.10 ppt
2024-07-2335894139009SE4ND