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EWG's Tap Water Database — 2021 UPDATE

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Perfluorooctanoic acid (PFOA)

City of Clovis

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

 

89

Samples

0

Samples exceeding legal limit (MCL)

9

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND360ND
2015ND350ND
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
20191.43 ppt189ND - 4.40 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
2014-09-02201409030549AMND
2014-09-02201409030584AMND
2014-09-02201409030557AMND
2014-09-02201409030623AMND
2014-09-02201409030619AMND
2014-09-03201409040510AMND
2014-09-03201409040644AMND
2014-09-03201409040496AMND
2014-09-03201409040555AMND
2014-09-03201409040545AMND
2014-09-03201409040640AMND
2014-09-03201409040476AMND
2014-09-03201409040561AMND
2014-09-03201409040653AMND
2014-09-03201409040597AMND
2014-09-03201409040593AMND
2014-09-03201409040578AMND
2014-09-03201409040519AMND
2014-09-03201409040515AMND
2014-09-03201409040571AMND
2014-09-04201409050374AMND
2014-09-04201409050367AMND
2014-09-04201409050369AMND
2014-09-04201409050385AMND
2014-09-04201409050321AMND
2014-09-04201409050330AMND
2014-09-04201409050304AMND
2014-09-04201409050380AMND
2014-09-04201409050362AMND
2014-09-04201409050383AMND
2014-09-04201409050388AMND
2014-09-04201409050316AMND
2014-09-04201409050372AMND
2014-09-04201409050333AMND
2014-09-04201409050378AMND
2014-12-11201412110701AMND
2015-03-04201502190796AMND
2015-03-04201502190787AMND
2015-03-04201502190795AMND
2015-03-04201502190792AMND
2015-03-04201502190774AMND
2015-03-04201502190766AMND
2015-03-04201502190772AMND
2015-03-04201502190797AMND
2015-03-04201502190775AMND
2015-03-04201502190794AMND
2015-03-04201502190769AMND
2015-03-04201502190768AMND
2015-03-04201502190771AMND
2015-03-04201502190770AMND
2015-03-04201502190782AMND
2015-03-04201502190781AMND
2015-03-04201502190784AMND
2015-03-04201502190779AMND
2015-03-04201502190777AMND
2015-03-04201502190780AMND
2015-03-05201502190798AMND
2015-03-05201502190791AMND
2015-03-05201502190767AMND
2015-03-05201502190788AMND
2015-03-05201502190785AMND
2015-03-05201502190786AMND
2015-03-05201502190790AMND
2015-03-05201502190789AMND
2015-03-05201502190765AMND
2015-03-05201502190799AMND
2015-03-05201502190778AMND
2015-03-05201502190783AMND
2015-03-25201503190213AMND
2015-03-25201502190773AMND
2015-06-11201506120118AMND
2019-06-105810-076-11572.60 ppt
2019-06-105810-020-1235ND
2019-06-105810-005-12111.30 ppt
2019-06-105810-034-1144ND
2019-06-105810-033-11212.60 ppt
2019-06-105810-032-11344.40 ppt
2019-07-085810-020-1135ND
2019-07-085810-034-1100ND
2019-07-085810-032-10454.20 ppt
2019-07-085810-033-10312.40 ppt
2019-07-085810-076-11142.90 ppt
2019-08-025810-005-11481.20 ppt
2019-10-215810-032-10494.20 ppt
2019-10-215810-020-1141ND
2019-10-215810-033-1034ND
2019-10-215810-034-1059ND
2019-10-215810-076-1113ND
2019-10-215810-005-1129ND