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EWG's Tap Water Database — 2021 UPDATE

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Perfluorodecanoic acid (PFDA)

Cal-water Service Company - Chico

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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67

Samples

0

Samples exceeding legal limit (MCL)

0

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
2018N/A00N/A
2019ND670ND

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
2019-05-299590-030-0754ND
2019-05-299590-052-1041ND
2019-05-299590-054-0840ND
2019-05-299590-064-0948ND
2019-05-299590-057-0710ND
2019-05-309590-034-1245ND
2019-05-309590-075-1159ND
2019-05-309590-069-1128ND
2019-05-309590-061-1052ND
2019-06-049590-035-1035ND
2019-06-049590-018-0852ND
2019-06-129590-033-1154ND
2019-06-129590-050-1219ND
2019-06-129590-140-1125ND
2019-06-139590-017-0925ND
2019-06-139590-026-0755ND
2019-06-139590-143-1215ND
2019-06-189590-077-0827ND
2019-06-189590-027-0850ND
2019-06-189590-028-0750ND
2019-06-189590-134-0810ND
2019-06-199590-074-0900ND
2019-06-199590-036-0825ND
2019-06-199590-041-0800ND
2019-06-199590-029-0753ND
2019-06-199590-013-0558ND
2019-07-029590-049-1300ND
2019-08-059590-063-1058ND
2019-08-279590-038-1322ND
2019-08-279590-018-1120ND
2019-08-279590-064-0815ND
2019-08-279590-057-1000ND
2019-08-279590-023-0815ND
2019-08-289590-010-0945ND
2019-08-289590-061-0906ND
2019-08-289590-011-0730ND
2019-08-289590-043-1000ND
2019-08-289590-048-0731ND
2019-08-289590-020-0840ND
2019-08-289590-035-1020ND
2019-08-299590-062-0715ND
2019-08-299590-076-0805ND
2019-08-299590-005-0900ND
2019-08-299590-037-0730ND
2019-09-112920-071-0705ND
2019-11-069590-011-0700ND
2019-11-069590-018-0937ND
2019-11-069590-010-0823ND
2019-11-069590-035-1232ND
2019-11-129590-005-1040ND
2019-11-129590-064-0917ND
2019-11-129590-076-1110ND
2019-11-129590-061-1015ND
2019-11-129590-038-1140ND
2019-11-129590-023-0837ND
2019-11-199590-057-1059ND
2019-11-199590-048-0755ND
2019-11-199590-043-1015ND
2019-11-199590-037-0827ND
2019-11-219590-062-0830ND
2019-11-219590-020-0800ND
2019-12-049590-059-1020ND
2019-12-049590-049-0835ND
2019-12-109590-017-1131ND
2019-12-119590-019-1014ND
2019-12-119590-028-0936ND
2019-12-179590-056-1130ND