Know Your Environment. Protect Your Health.

Perfluorooctane sulfonate (PFOS)

Woodbury City Water Department

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.

 

30

Samples

0

Samples exceeding legal limit (MCL)

1

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
20180.149 ppt451ND - 6.70 ppt
20190.226 ppt392ND - 5.30 ppt
20201.20 ppt101ND - 12.0 ppt
2021ND60ND
2022ND50ND
2023ND50ND
2024ND40ND

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
2020-01-29L7187087-112.0 ppt
2020-02-04L7187435-1ND
2020-02-04L7187435-3ND
2020-04-23L7193911-1ND
2020-04-23L7193911-3ND
2020-04-23L7193911-5ND
2020-07-15630-2956-1ND
2020-07-15630-2956-3ND
2020-10-06630-8083-1ND
2020-10-06630-8083-3ND
2021-02-22630-13814-4ND
2021-02-23630-13847-4ND
2021-03-18630-14922-2ND
2021-04-14630-16047-1ND
2021-07-13630-19530-1ND
2021-10-06630-22837-1ND
2022-01-26630-26657-1ND
2022-01-27630-26702-1ND
2022-04-13630-31204-1ND
2022-04-13630-31204-3ND
2022-04-26630-32051-1ND
2023-11-16V134147PFASND
2023-11-16V134148PFASND
2023-12-2635850427001SE1ND
2023-12-2635850427003SE1ND
2023-12-2635850429001SE1ND
2024-03-0435864261001SE2ND
2024-06-0435883774001SE2ND
2024-06-0435883774003SE2ND
2024-06-0435883765001SE3ND