Know Your Environment. Protect Your Health.

Perfluorooctane sulfonate (PFOS)

Royal Estates

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.

 

15

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND20ND
2019N/A00N/A
2020N/A00N/A
2021ND60ND
2022ND50ND
2023ND20ND

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
2018-06-18GWNT1806181305KERND
2018-06-18GWNT1806181315KERND
2021-01-192101142505PFAS CH001ND
2021-01-192101142507PFAS WL003ND
2021-08-31ND
2021-08-31ND
2021-08-312108H47-01ND
2021-08-312108H47-03ND
2022-06-21ND
2022-06-21ND
2022-06-2122F0879-01 PFASND
2022-06-2122F0879-02ND
2022-06-2122F0879-02ND
2023-08-22ND
2023-08-22ND