Know Your Environment. Protect Your Health.

Perfluorooctane sulfonate (PFOS)

East Cocalico Township

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.

 

22

Samples

0

Samples exceeding legal limit (MCL)

5

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
20201.55 ppt21ND - 3.10 ppt
2021N/A00N/A
2022N/A00N/A
2023N/A00N/A
20240.880 ppt204ND - 4.90 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
2020-11-04ND
2020-11-043.10 ppt
2024-01-15111825PND
2024-01-15111826PND
2024-01-15111834PND
2024-01-15111827P4.90 ppt
2024-01-15111828PND
2024-01-15111833PND
2024-01-15111829PND
2024-01-15111830PND
2024-01-15111832P4.20 ppt
2024-01-15111831PND
2024-07-15119028PND
2024-07-15119027PND
2024-07-15119026P4.00 ppt
2024-07-15119025PND
2024-07-15119024PND
2024-07-15119023PND
2024-07-15119022PND
2024-07-15119021P4.50 ppt
2024-07-15119020PND
2024-07-15119019PND