Know Your Environment. Protect Your Health.

Perfluorooctane sulfonate (PFOS)

Coast Springs - Cal. Water Service (puc)

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
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
2019N/A00N/A
2020ND110ND
2021N/A00N/A
2022N/A00N/A
20230.153 ppt191ND - 2.90 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
2020-04-02CA2110007_008_008-202004021210ND
2020-04-02CA2110007_002_002-202004021130ND
2020-04-02CA2110007_004_004-202004021230ND
2020-06-02CA2110007_015_015-202006021115ND
2020-06-02CA2110007_001_001-202006021100ND
2020-06-22CA2110007_016_016-202006221145ND
2020-06-23CA2110007_005_005-202006231115ND
2020-06-24CA2110007_003_003-202006241135ND
2020-09-22CA2110007_007_007-202009221100ND
2020-09-22CA2110007_010_010-202009221130ND
2020-10-05CA2110007_006_006-202010050730ND
2023-03-22CA2110007_015_015-202303221030ND
2023-03-22CA2110007_015_015-202303221020ND
2023-06-15CA2110007_001_001-202306151030ND
2023-06-19CA2110007_016_016-202306191000ND
2023-06-19CA2110007_016_016-202306191000ND
2023-06-19CA2110007_005_005-2023061909302.90 ppt
2023-06-21CA2110007_006_006-202306210850ND
2023-06-21CA2110007_007_007-202306210940ND
2023-06-21CA2110007_006_006-202306210850ND
2023-06-21CA2110007_007_007-202306210940ND
2023-06-22CA2110007_008_008-202306221135ND
2023-06-22CA2110007_008_008-202306221120ND
2023-06-27CA2110007_004_004-202306270930ND
2023-06-27CA2110007_004_004-202306270930ND
2023-06-28CA2110007_002_002-202306280945ND
2023-06-28CA2110007_002_002-202306280945ND
2023-06-29CA2110007_005_005-202306291200ND
2023-07-18CA2110007_010_010-202307181150ND
2023-07-18CA2110007_010_010-202307181145ND