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EWG's Tap Water Database — 2021 UPDATE

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Perfluorononanoic acid (PFNA)

City of Corona

Perfluorononanoic acid, otherwise known as PFNA or C9, is a PFC similar in function and use to PFOA. These chemicals were used in the production of non-stick, stain repellent and chemically inert coatings. Click here to read more about perfluorinated chemicals.

MORE ABOUT THIS CONTAMINANT

 

108

Samples

0

Samples exceeding legal limit (MCL)

10

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND100ND
2014ND200ND
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
20190.304 ppt7810ND - 3.60 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 perfluorononanoic acid was defined by EWG 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 applies to the entire class of PFAS detected in water.

EPA Maximum Contaminant
Level (MCL) 10 ppt

ppt = parts per trillion

All test results

Date Lab ID Result
2013-10-09201310100242AMND
2013-10-09201310100236AMND
2013-10-09201310100240AMND
2013-10-09201310100234AMND
2013-10-09201310100238AMND
2013-10-23201310240246AMND
2013-10-23201310240240AMND
2013-10-23201310240244AMND
2013-10-23201310240242AMND
2013-10-23201310240252AMND
2014-01-15201401150769AMND
2014-01-15201401150771AMND
2014-01-15201401150773AMND
2014-01-16201401170062AMND
2014-01-16201401170060AMND
2014-04-09201404090857AMND
2014-04-09201404090855AMND
2014-04-09201404090853AMND
2014-04-09201404090851AMND
2014-04-09201404090849AMND
2014-04-17201404180150AMND
2014-04-17201404180148AMND
2014-04-22201404220789AMND
2014-04-24201404240697AMND
2014-04-24201404240693AMND
2014-07-10201407100756AMND
2014-07-10201407100762AMND
2014-07-10201407100758AMND
2014-07-10201407100760AMND
2014-07-15201407150791AMND
2019-05-019590-014-1055ND
2019-05-019590-015-1120ND
2019-05-019590-019-0950ND
2019-05-019590-021-1350ND
2019-05-019590-024-1510ND
2019-05-019590-027-1500ND
2019-05-019590-029-1030ND
2019-05-019590-030-0850ND
2019-05-019590-031-0800ND
2019-05-019590-032-1440ND
2019-05-019590-033-08202.40 ppt
2019-05-019590-039-14252.20 ppt
2019-05-019590-043-1020ND
2019-05-019590-049-0920ND
2019-05-019590-055-08352.00 ppt
2019-05-019590-056-10402.20 ppt
2019-05-019590-067-1410ND
2019-05-019590-071-0900ND
2019-05-029590-034-0730ND
2019-05-029590-036-1500ND
2019-05-029590-041-1510ND
2019-05-029590-044-1320ND
2019-05-029590-045-1400ND
2019-05-029590-046-1410ND
2019-05-029590-057-1300ND
2019-05-029590-058-1310ND
2019-05-029590-059-1450ND
2019-05-029590-064-1600ND
2019-05-029590-072-1530ND
2019-08-279590-044-1100ND
2019-08-279590-057-1035ND
2019-08-279590-058-1045ND
2019-08-279590-059-1015ND
2019-08-299590-014-1050ND
2019-08-299590-015-1034ND
2019-08-299590-019-1218ND
2019-08-299590-021-1014ND
2019-08-299590-024-0930ND
2019-08-299590-027-0945ND
2019-08-299590-029-1121ND
2019-08-299590-039-0840ND
2019-08-299590-043-1147ND
2019-08-299590-049-1250ND
2019-08-299590-056-11102.40 ppt
2019-08-299590-067-1315ND
2019-08-299590-071-1400ND
2019-09-269590-038-0755ND
2019-10-179590-014-1325ND
2019-10-179590-015-13502.00 ppt
2019-10-179590-019-0940ND
2019-10-179590-021-1050ND
2019-10-179590-024-1125ND
2019-10-179590-027-1115ND
2019-10-179590-029-1300ND
2019-10-179590-030-1000ND
2019-10-179590-031-10402.30 ppt
2019-10-179590-032-1100ND
2019-10-179590-033-10203.60 ppt
2019-10-179590-034-1135ND
2019-10-179590-036-0956ND
2019-10-179590-038-1215ND
2019-10-179590-039-1155ND
2019-10-179590-041-0936ND
2019-10-179590-043-1230ND
2019-10-179590-044-1100ND
2019-10-179590-045-1040ND
2019-10-179590-046-1042ND
2019-10-179590-049-0930ND
2019-10-179590-055-11452.10 ppt
2019-10-179590-056-13152.50 ppt
2019-10-179590-057-1016ND
2019-10-179590-058-1018ND
2019-10-179590-059-0958ND
2019-10-179590-064-0912ND
2019-10-179590-067-0850ND
2019-10-179590-071-1010ND
2019-10-179590-072-1119ND
2019-11-139590-034-0800ND