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EWG's Tap Water Database — 2021 UPDATE

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Perfluorooctanoic acid (PFOA)

City of Sherman

Perfluorooctanoic acid (PFOA) is a member of a group of perfluorinated chemicals used in many consumer products. PFOA 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

 

20

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND180ND
2015ND20ND
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
2019N/A00N/A

ppt = parts per trillion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.007 ppt

The EWG Health Guideline of 0.007 ppt for PFOA was proposed by California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer.

EPA Maximum Contaminant
Level (MCL) 4 ppt

ppt = parts per trillion

All test results

Date Lab ID Result
2014-03-24Q1409267001ND
2014-03-24Q1409267005ND
2014-03-24Q1409267007ND
2014-03-31Q1410032005ND
2014-03-31Q1410032001ND
2014-03-31Q1410032003ND
2014-04-22Q1412615001ND
2014-06-16Q1421201001ND
2014-09-29Q1448928017ND
2014-09-29Q1448928013ND
2014-09-29Q1448928015ND
2014-09-29Q1448928001ND
2014-09-29Q1448928011ND
2014-09-29Q1448928009ND
2014-09-29Q1448928007ND
2014-09-29Q1448928003ND
2014-09-29Q1448928005ND
2014-12-29Q1460911001ND
2015-04-23Q1515129001ND
2015-04-23Q1515129003ND