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EWG's Tap Water Database — 2021 UPDATE

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Perfluorononanoic acid (PFNA)

Valencia Water Company

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.

 

85

Samples

0

Samples exceeding legal limit (MCL)

16

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND40ND
2014ND360ND
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
20191.17 ppt4516ND - 6.70 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.

ppt = parts per trillion

All test results

Date Lab ID Result
2013-02-27201303010058AMND
2013-05-15201305160535AMND
2013-08-23201308290470AMND
2013-11-11201311150009AMND
2014-03-05201403050959AMND
2014-03-05201403050961AMND
2014-03-12201403120917AMND
2014-03-12201403120928AMND
2014-03-12201403120915AMND
2014-04-09201404100450AMND
2014-04-16201404180185AMND
2014-04-16201404180187AMND
2014-04-16201404180189AMND
2014-04-16201404180193AMND
2014-04-16201404180191AMND
2014-04-23201404230714AMND
2014-05-14201405141013AMND
2014-05-28201405280604AMND
2014-05-28201405280606AMND
2014-05-28201405280602AMND
2014-06-11201406120231AMND
2014-06-11201406120233AMND
2014-06-25201406250428AMND
2014-09-04201409040734AMND
2014-09-04201409040736AMND
2014-09-04201409040732AMND
2014-10-09201410090961AMND
2014-10-10201410160738AMND
2014-10-10201410160740AMND
2014-10-10201410160742AMND
2014-10-10201410160744AMND
2014-10-16201410160748AMND
2014-10-16201410160746AMND
2014-11-06201411060675AMND
2014-11-06201411060677AMND
2014-11-20201411200796AMND
2014-11-20201411200790AMND
2014-11-20201411200788AMND
2014-11-20201411200792AMND
2014-11-20201411200794AMND
2019-05-099590-046-10024.20 ppt
2019-05-099590-005-0952ND
2019-05-099590-047-08543.10 ppt
2019-05-099590-026-09104.20 ppt
2019-05-099590-049-0930ND
2019-05-099590-025-10352.80 ppt
2019-05-099590-024-09303.80 ppt
2019-05-099590-003-1115ND
2019-05-099590-004-09052.50 ppt
2019-05-099590-018-0955ND
2019-08-079590-021-0925ND
2019-08-079590-052-0840ND
2019-08-079590-062-0905ND
2019-08-210006-046-09302.40 ppt
2019-08-210006-025-08503.50 ppt
2019-08-210006-049-0940ND
2019-08-210006-051-1030ND
2019-08-210006-070-0910ND
2019-08-210006-017-1000ND
2019-08-290006-026-09503.40 ppt
2019-08-290006-047-09151.90 ppt
2019-08-290006-005-1050ND
2019-08-290006-004-09253.40 ppt
2019-08-290006-018-0905ND
2019-08-290006-058-0935ND
2019-11-069590-052-0840ND
2019-11-069590-018-0825ND
2019-11-069590-021-0926ND
2019-11-069590-026-09002.60 ppt
2019-11-069590-062-0908ND
2019-11-069590-058-1000ND
2019-11-149590-070-0920ND
2019-11-149590-051-1100ND
2019-11-149590-049-0915ND
2019-11-149590-046-08402.40 ppt
2019-11-149590-025-09353.00 ppt
2019-11-149590-020-0830ND
2019-11-149590-017-0945ND
2019-11-209590-073-0930ND
2019-11-209590-047-09206.70 ppt
2019-11-209590-004-09402.80 ppt
2019-11-209590-003-0900ND
2019-11-219590-048-1120ND
2019-11-259590-005-1030ND
2019-12-129590-073-0900ND