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EWG's Tap Water Database — 2021 UPDATE

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Perfluorooctanoic acid (PFOA)

Cal-am Water Company - Duarte

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

 

26

Samples

0

Samples exceeding legal limit (MCL)

2

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND160ND
2014N/A00N/A
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
20192.36 ppt102ND - 13.4 ppt

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
2013-03-0621126801ND
2013-03-0621127101ND
2013-03-0621127001ND
2013-03-1221126901ND
2013-03-1221126401ND
2013-03-1321127201ND
2013-03-1321126501ND
2013-03-1321269901ND
2013-09-1023394301ND
2013-09-1023394601ND
2013-09-1023394501ND
2013-09-1023394701ND
2013-09-1023394201ND
2013-09-1023394401ND
2013-09-1023394901ND
2013-09-1023394801ND
2019-10-221225-001-1455ND
2019-10-221225-022-1620ND
2019-10-221225-019-1555ND
2019-10-221225-009-1635ND
2019-10-221225-008-1910ND
2019-10-221225-007-1810ND
2019-10-221225-003-172013.4 ppt
2019-10-221225-002-1755ND
2019-10-231225-010-1610ND
2019-11-191225-003-135010.2 ppt