Know Your Environment. Protect Your Health.

Perfluorooctane sulfonate (PFOS)

Parkwood Green

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.

 

55

Samples

0

Samples exceeding legal limit (MCL)

26

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND30ND
2019N/A00N/A
2020N/A00N/A
20212.01 ppt2313ND - 5.00 ppt
20222.71 ppt188ND - 10.00 ppt
20231.63 ppt115ND - 4.30 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
2018-04-18GW1804181415CKAND
2018-04-18GW1804181430CKAND
2018-04-18GW1804181425CKAND
2021-01-192101815-03ND
2021-01-192101815-013.00 ppt
2021-01-192101815-02ND
2021-03-153.80 ppt
2021-03-155.00 ppt
2021-03-152103671-025.00 ppt
2021-03-152103671-013.80 ppt
2021-06-294.10 ppt
2021-06-292106F85-02ND
2021-06-292106F85-014.10 ppt
2021-06-29ND
2021-09-213.70 ppt
2021-09-21ND
2021-09-21ND
2021-09-212109A99-02ND
2021-09-212109A99-033.70 ppt
2021-09-212109A99-01ND
2021-12-20WL001 12-20-21 PFA22.50 ppt
2021-12-202112935-01ND
2021-12-202.50 ppt
2021-12-202.50 ppt
2021-12-20ND
2021-12-20WL003 2112935-022.50 ppt
2022-03-07ND
2022-03-0710.00 ppt
2022-03-072203374-01ND
2022-03-072203374-0210.00 ppt
2022-06-206.90 ppt
2022-06-20ND
2022-06-202206E74-026.90 ppt
2022-06-202206E74-01ND
2022-09-212209F49-033.20 ppt
2022-09-212209F49-02ND
2022-09-212209F49-01ND
2022-09-213.20 ppt
2022-09-21ND
2022-09-21ND
2022-11-292211F57-024.30 ppt
2022-11-294.30 ppt
2022-11-29ND
2022-11-292211F57-01ND
2023-02-282302C70-024.30 ppt
2023-02-284.30 ppt
2023-02-28ND
2023-02-282302C70-01ND
2023-06-27ND
2023-06-272.50 ppt
2023-09-18ND
2023-09-182.80 ppt
2023-10-31ND
2023-10-314.00 ppt
2023-10-31ND