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EWG's Tap Water Database — 2021 UPDATE

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N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA)

City of Loma Linda

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)

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
2018N/A00N/A
20190.156 ppt181ND - 2.80 ppt

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
2019-06-039588-017-1400ND
2019-06-039588-018-1130ND
2019-06-039588-031-1020ND
2019-06-049588-032-1240ND
2019-06-049588-024-0720ND
2019-06-049588-030-0750ND
2019-09-109588-017-0925ND
2019-09-109588-031-0800ND
2019-09-109588-024-1035ND
2019-09-109588-018-0830ND
2019-09-119588-032-07102.80 ppt
2019-09-129588-030-0900ND
2019-12-029588-024-1115ND
2019-12-029588-017-1430ND
2019-12-029588-032-1040ND
2019-12-039588-030-1355ND
2019-12-039588-018-1115ND
2019-12-039588-031-1440ND