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EWG's Tap Water Database — 2021 UPDATE

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N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA)

California American Water Company - Parkway

N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) is a member of a group of perfluorinated chemicals used in many consumer products. NMeFOSAA 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.

MORE ABOUT THIS CONTAMINANT

 

18

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
2019ND180ND

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 NMeFOSAA 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
2019-12-021225-006-1415ND
2019-12-021225-026-1345ND
2019-12-021225-024-1325ND
2019-12-021225-018-1335ND
2019-12-021225-017-1545ND
2019-12-021225-016-1605ND
2019-12-021225-015-1455ND
2019-12-021225-011-1305ND
2019-12-021225-009-1310ND
2019-12-031225-013-1500ND
2019-12-031225-008-1240ND
2019-12-031225-002-1125ND
2019-12-051225-012-1430ND
2019-12-051225-022-1255ND
2019-12-051225-023-1217ND
2019-12-051225-025-1335ND
2019-12-181225-013-1253ND
2019-12-181225-015-1605ND