Know Your Environment. Protect Your Health.

Perfluorooctane sulfonate (PFOS)

Southwood Water 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.

 

65

Samples

0

Samples exceeding legal limit (MCL)

18

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
20231.72 ppt3914ND - 7.14 ppt
20240.858 ppt264ND - 8.90 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
2023-06-124483251ND
2023-06-124483135ND
2023-06-124483183ND
2023-06-124483151ND
2023-06-124483157ND
2023-06-124483225ND
2023-06-124483199ND
2023-06-124483179ND
2023-06-124483194ND
2023-06-124483282ND
2023-06-134483281ND
2023-06-134483175ND
2023-06-134483262ND
2023-06-134483286ND
2023-06-134483279ND
2023-06-134483168ND
2023-06-134483189ND
2023-06-134483280ND
2023-06-134483273ND
2023-06-1344832414.90 ppt
2023-06-1944832973.03 ppt
2023-06-1944832996.31 ppt
2023-06-1944833016.72 ppt
2023-06-1944832923.91 ppt
2023-06-194483302ND
2023-06-1944832982.73 ppt
2023-06-194483294ND
2023-06-1944832934.58 ppt
2023-06-194483295ND
2023-06-1944832963.00 ppt
2023-06-1944833007.14 ppt
2023-09-1245312854.52 ppt
2023-09-124531284ND
2023-09-1245311803.82 ppt
2023-09-1245311793.12 ppt
2023-09-184531339ND
2023-09-1845313406.75 ppt
2023-11-134550132ND
2023-11-1345501336.51 ppt
2024-04-01VHD0012-09ND
2024-04-01VHD0012-374.00 ppt
2024-04-01VHD0012-29ND
2024-04-01VHD0012-27ND
2024-04-01VHD0012-39ND
2024-04-01VHD0012-41ND
2024-04-01VHD0012-43ND
2024-04-01VHD0012-05ND
2024-04-01VHD0012-03ND
2024-04-02VHD0012-49ND
2024-04-02VHD0012-51ND
2024-04-02VHD0012-075.00 ppt
2024-04-02VHD0012-11ND
2024-04-02VHD0012-35ND
2024-04-02VHD0012-33ND
2024-04-02VHD0012-31ND
2024-04-02VHD0012-25ND
2024-04-02VHD0012-23ND
2024-04-02VHD0012-198.90 ppt
2024-04-02VHD0012-13ND
2024-04-02VHD0012-01ND
2024-04-03VHD0012-214.40 ppt
2024-04-03VHD0012-45ND
2024-04-03VHD0012-17ND
2024-04-03VHD0012-15ND
2024-07-15VHG0279-01ND