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EWG's Tap Water Database — 2021 UPDATE

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Perfluorononanoic acid (PFNA)

United Water NJ

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

 

65

Samples

0

Samples exceeding legal limit (MCL)

20

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND80ND
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
20180.844 ppt3413ND - 2.80 ppt
20190.704 ppt237ND - 2.90 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
2014-02-26201402270238AMND
2014-02-26201402270279AMND
2014-05-07201405080501AMND
2014-05-07201405080507AMND
2014-08-13201408140531AMND
2014-08-13201408140526AMND
2014-11-06201411070378AMND
2014-11-12201411130807AMND
2018-01-24201801300875ND
2018-01-24201801300861ND
2018-01-24201801300874ND
2018-01-24201801310876ND
2018-01-24201801300862ND
2018-04-30201805010561ND
2018-04-30201805010560ND
2018-04-30201805011037ND
2018-04-30201805011039ND
2018-04-30201805011038ND
2018-07-172018071904302.00 ppt
2018-07-17201807190431ND
2018-07-192018072005972.10 ppt
2018-07-19201807200595ND
2018-07-192018072005962.00 ppt
2018-08-28201808310639ND
2018-08-282018083106382.00 ppt
2018-09-242018092506462.80 ppt
2018-09-242018092508632.60 ppt
2018-09-24201809250644ND
2018-09-24201809250862ND
2018-09-242018092506452.10 ppt
2018-10-152018101707732.00 ppt
2018-10-152018101707722.10 ppt
2018-10-15201810170769ND
2018-10-152018101707742.50 ppt
2018-10-152018101707702.30 ppt
2018-11-07201811080877ND
2018-11-072018110808792.00 ppt
2018-11-07201811090287ND
2018-11-072018110902882.20 ppt
2018-11-07201811080878ND
2018-12-11201812130047ND
2018-12-11201812130048ND
2019-01-14201901160747ND
2019-01-14201901160748ND
2019-01-14201901160746ND
2019-01-14201901160682ND
2019-01-14201901160681ND
2019-02-252019022602732.00 ppt
2019-02-25201902260272ND
2019-03-182019031906302.10 ppt
2019-03-18201903190629ND
2019-04-152019041604952.60 ppt
2019-04-15201904160494ND
2019-05-202019052103132.30 ppt
2019-05-20201905210314ND
2019-07-022019070304742.90 ppt
2019-07-02201907030475ND
2019-07-09201907100733ND
2019-07-09201907100735ND
2019-07-09201907100734ND
2019-10-07201910080562ND
2019-10-072019100805612.20 ppt
2019-10-16201910180424ND
2019-10-16201910180426ND
2019-10-162019101804252.10 ppt