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EWG's Tap Water Database — 2019 UPDATE

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Perfluorononanoic acid (PFNA)

Chesterfield County Central 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.

 

12

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
2013N/A00N/A
2014ND90ND
2015ND30ND
2016N/A00N/A
2017N/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
2014-04-02201404030303AMND
2014-04-02201404030301AMND
2014-04-02201404030305AMND
2014-07-15201407160492AMND
2014-07-15201407160490AMND
2014-07-15201407160488AMND
2014-10-21201410220460AMND
2014-10-21201410220462AMND
2014-10-21201410220458AMND
2015-01-13201501140529AMND
2015-01-13201501140533AMND
2015-01-13201501140531AMND