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EWG's Tap Water Database — 2021 UPDATE

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Perfluorodecanoic acid (PFDA)

California American Water Company - Suburban

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.

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41

Samples

0

Samples exceeding legal limit (MCL)

0

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
2019ND410ND

ppt = parts per trillion

State and national drinking water standards and health guidelines

EWG Health Guideline 1 ppt

The EWG Health Guideline of 1 ppt for PFDA was defined by EWG as based on studies by Phillipe Grandjean of Harvard University and many other independent researchers who found reduced effectiveness of vaccines and adverse impacts on mammary gland development from exposure to PFOA and PFOS, the two PFAS most widely detected in drinking water. This health guideline protects against applies to the entire class of PFAS detected in water.

ppt = parts per trillion

All test results

Date Lab ID Result
2019-05-139590-021-0930ND
2019-05-159590-013-0945ND
2019-06-041225-019-1040ND
2019-08-071225-019-1110ND
2019-08-081225-021-1200ND
2019-08-121225-006-1410ND
2019-08-121225-013-1240ND
2019-08-141225-010-1230ND
2019-09-111225-064-1245ND
2019-09-111225-066-1255ND
2019-10-161225-010-1735ND
2019-10-161225-064-1811ND
2019-10-161225-066-1840ND
2019-11-041225-066-1314ND
2019-11-041225-063-1231ND
2019-11-041225-064-1243ND
2019-11-041225-065-1259ND
2019-11-111225-016-1637ND
2019-11-111225-018-1505ND
2019-11-111225-014-1420ND
2019-11-111225-004-1748ND
2019-11-111225-005-1640ND
2019-11-111225-020-1340ND
2019-11-111225-012-1220ND
2019-11-111225-008-1315ND
2019-11-111225-044-1517ND
2019-11-111225-049-1355ND
2019-11-111225-011-1157ND
2019-11-111225-051-1305ND
2019-11-121225-001-1210ND
2019-11-121225-007-1300ND
2019-11-121225-009-1430ND
2019-11-121225-053-1105ND
2019-11-121225-050-1532ND
2019-11-121225-021-1407ND
2019-11-121225-019-1533ND
2019-11-131225-013-1427ND
2019-11-131225-006-1233ND
2019-11-141225-017-1533ND
2019-12-091225-021-1416ND
2019-12-091225-013-1530ND