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EWG's Tap Water Database — 2021 UPDATE

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Perfluorononanoic acid (PFNA)

City of Orange

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

 

59

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND120ND
2014ND250ND
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
2019ND220ND

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
2013-03-043010027826ND
2013-03-053010027827ND
2013-03-063010027824ND
2013-06-103010027827-2ND
2013-06-103010027826-2ND
2013-06-113010027824-2ND
2013-09-033010027826-3ND
2013-09-033010027827-3ND
2013-09-113010027824-3AND
2013-12-093010027824-4ND
2013-12-093010027827-4ND
2013-12-093010027826-4ND
2014-05-133010027803-1ND
2014-05-133010027805-1ND
2014-05-133010027804-1ND
2014-05-133010027817-1ND
2014-05-133010027816-1ND
2014-05-143010027802-1ND
2014-05-143010027825-1ND
2014-05-143010027806-1ND
2014-05-143010027808-1ND
2014-05-143010027813-1ND
2014-05-143010027809-1ND
2014-05-143010027812-1ND
2014-10-1314100374ND
2014-10-1314100375ND
2014-10-1314100370ND
2014-10-1314100373ND
2014-10-1314100371ND
2014-10-1314100376ND
2014-10-1314100372ND
2014-10-1414100429ND
2014-10-1414100428ND
2014-10-1414100430ND
2014-10-1414100431ND
2014-10-1414100426ND
2014-10-1414100427ND
2019-04-234417-008-1215ND
2019-04-234417-009-1230ND
2019-04-234417-017-1145ND
2019-04-234417-023-1045ND
2019-06-044417-017-1125ND
2019-06-044417-022-1015ND
2019-06-044417-008-1045ND
2019-06-044417-009-1105ND
2019-06-044417-023-1200ND
2019-06-054417-020-1110ND
2019-09-034417-020-1020ND
2019-09-034417-017-1240ND
2019-09-034417-023-1050ND
2019-09-034417-009-1210ND
2019-09-034417-008-1155ND
2019-09-194417-022-1130ND
2019-11-054417-023-1115ND
2019-11-054417-020-1010ND
2019-11-054417-008-1235ND
2019-11-054417-009-1220ND
2019-11-054417-022-0905ND
2019-11-054417-017-1205ND