Know Your Environment. Protect Your Health.

Perfluorooctane sulfonate (PFOS)

Warrington Twp Water&sew Dept

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.

 

88

Samples

0

Samples exceeding legal limit (MCL)

9

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
201491.1 ppt82ND - 666.7 ppt
201510.5 ppt91ND - 94.4 ppt
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
2019N/A00N/A
2020ND170ND
20212.16 ppt193ND - 17.0 ppt
202275.3 ppt113ND - 780.0 ppt
2023ND240ND

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
2014-11-11831004-12827ND
2014-11-11831006-12827ND
2014-11-11830998-12827ND
2014-11-11831008-12827ND
2014-11-11831014-1285762.1 ppt
2014-11-11831016-12870666.7 ppt
2014-11-11831012-12857ND
2014-11-11831002-12827ND
2015-02-09842481-13364ND
2015-05-11859200-14084ND
2015-05-11859192-14084ND
2015-05-11859198-14084ND
2015-05-11859204-14084ND
2015-05-11859208-1408494.4 ppt
2015-05-11859202-14084ND
2015-05-11859194-14084ND
2015-08-203305497ND
2020-06-1124230627.00ND
2020-07-0924230637.00ND
2020-07-0924230635.00ND
2020-07-2124230647.00ND
2020-07-2124230645.00ND
2020-08-0624230649.00ND
2020-08-0624230651.00ND
2020-08-1824230661.00ND
2020-08-1824230659.00ND
2020-09-0124230671.00ND
2020-09-0124230669.00ND
2020-09-2924230681.00ND
2020-09-2924230679.00ND
2020-10-2224230689.00ND
2020-10-2224230697.00ND
2020-11-1724230699.00ND
2020-11-1724230707.00ND
2021-01-1224420392.00ND
2021-01-1224420386.00ND
2021-02-0824420402.00ND
2021-02-0824420394.00ND
2021-03-0924420404.00ND
2021-03-0924420412.00ND
2021-04-1524420414.00ND
2021-04-1524420422.00ND
2021-05-1125747938.00ND
2021-05-1125747890.00ND
2021-06-0825747998.00ND
2021-06-0825747950.00ND
2021-08-1025748058.00ND
2021-08-1025748010.00ND
2021-09-3025387447.0011.0 ppt
2021-11-1625748076.00ND
2021-11-1625748136.0017.0 ppt
2021-11-1625748124.00ND
2021-12-1625748215.0013.0 ppt
2022-01-1125926066.00ND
2022-01-1125926018.00ND
2022-05-1026631116.00ND
2022-05-1026631128.0013.0 ppt
2022-05-1026631140.00780.0 ppt
2022-05-1026631152.0035.0 ppt
2022-05-1026631164.00ND
2022-08-1027215816.00ND
2022-08-1027215864.00ND
2022-11-1027807349.00ND
2022-11-1027807301.00ND
2023-02-0928333887.00ND
2023-02-0928333935.00ND
2023-03-1428505217.00ND
2023-03-1428505205.00ND
2023-03-1628683825.00ND
2023-03-1628683837.00ND
2023-04-1828881690.00ND
2023-04-1828881630.00ND
2023-04-1828881666.00ND
2023-04-1828881654.00ND
2023-05-1129090331.00ND
2023-05-1129090283.00ND
2023-08-1029477825.00ND
2023-08-1029477777.00ND
2023-11-0930054406.00ND
2023-11-0930054358.00ND
2023-11-1430054760.00ND
2023-11-1430054748.00ND
2023-11-1430054832.00ND
2023-11-1430054820.00ND
2023-11-1430054796.00ND
2023-11-1430054784.00ND
2023-11-1630054856.00ND
2023-11-1630054868.00ND