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EWG's Tap Water Database — 2021 UPDATE

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Perfluorononanoic acid (PFNA)

Northeast Alabama Water System

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.

 

26

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND190ND
2015ND70ND
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
2019N/A00N/A

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
2014-06-123045957ND
2014-06-123046018ND
2014-06-123046039ND
2014-06-123045971ND
2014-06-133045990ND
2014-06-133045944ND
2014-06-133046005ND
2014-09-153106416ND
2014-09-153106710ND
2014-09-163106356ND
2014-09-163106383ND
2014-09-163106643ND
2014-12-163158388ND
2014-12-163158329ND
2014-12-163158412ND
2014-12-163158433ND
2014-12-163158397ND
2014-12-163158421ND
2014-12-163158338ND
2015-02-273197693ND
2015-03-123207129ND
2015-03-123207109ND
2015-03-123207087ND
2015-03-123207156ND
2015-03-123207177ND
2015-03-123207270ND