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EWG's Tap Water Database — 2021 UPDATE

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Perfluorononanoic acid (PFNA)

Honolulu-Windward-Pearl Harbor

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

 

99

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND970ND
2014ND20ND
2015N/A00N/A
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.

EPA Maximum Contaminant
Level (MCL) 10 ppt

ppt = parts per trillion

All test results

Date Lab ID Result
2013-04-01201304030417AMND
2013-04-01201304030421AMND
2013-04-01201304030423AMND
2013-04-01201304030419AMND
2013-04-02201304040551AMND
2013-04-02201304040559AMND
2013-04-02201304040553AMND
2013-04-02201304040555AMND
2013-04-02201304040557AMND
2013-04-02201304040549AMND
2013-04-02201304040561AMND
2013-04-03201304050206AMND
2013-04-03201304050208AMND
2013-04-03201304050214AMND
2013-04-03201304050210AMND
2013-04-03201304050216AMND
2013-04-03201304050212AMND
2013-04-05201304090180AMND
2013-04-05201304090176AMND
2013-04-05201304090178AMND
2013-04-05201304090174AMND
2013-04-05201304090182AMND
2013-04-08201304100357AMND
2013-04-08201304100365AMND
2013-04-08201304100363AMND
2013-04-08201304100359AMND
2013-04-08201304100367AMND
2013-04-08201304100361AMND
2013-04-09201304110572AMND
2013-04-09201304110568AMND
2013-04-09201304110570AMND
2013-04-09201304110566AMND
2013-04-10201304120421AMND
2013-04-10201304120417AMND
2013-04-10201304120419AMND
2013-04-12201304160070AMND
2013-04-15201304170633AMND
2013-04-15201304170635AMND
2013-04-16201304180489AMND
2013-04-16201304180487AMND
2013-04-17201304190454AMND
2013-04-17201304190456AMND
2013-04-22201304240301AMND
2013-04-22201304240299AMND
2013-04-23201304250519AMND
2013-04-24201304260158AMND
2013-04-24201304260160AMND
2013-04-26201304300183AMND
2013-10-01201310030504AMND
2013-10-01201310030502AMND
2013-10-01201310030506AMND
2013-10-01201310030508AMND
2013-10-02201310040385AMND
2013-10-02201310040383AMND
2013-10-02201310040387AMND
2013-10-04201310080421AMND
2013-10-04201310080415AMND
2013-10-04201310080417AMND
2013-10-04201310080411AMND
2013-10-04201310080419AMND
2013-10-04201310080413AMND
2013-10-07201310090445AMND
2013-10-07201310090449AMND
2013-10-07201310090447AMND
2013-10-08201310100584AMND
2013-10-08201310100582AMND
2013-10-08201310100578AMND
2013-10-08201310100580AMND
2013-10-09201310110394AMND
2013-10-09201310110396AMND
2013-10-11201310150231AMND
2013-10-11201310150225AMND
2013-10-11201310150227AMND
2013-10-11201310150229AMND
2013-10-11201310150233AMND
2013-10-14201310160253AMND
2013-10-14201310160257AMND
2013-10-14201310160251AMND
2013-10-14201310160255AMND
2013-10-15201310170263AMND
2013-10-16201310180367AMND
2013-10-16201310180363AMND
2013-10-16201310180369AMND
2013-10-16201310180371AMND
2013-10-16201310180361AMND
2013-10-16201310180365AMND
2013-10-18201310220219AMND
2013-10-18201310220215AMND
2013-10-18201310220217AMND
2013-10-21201310230538AMND
2013-10-21201310230540AMND
2013-10-21201310230542AMND
2013-10-22201310240445AMND
2013-10-22201310240443AMND
2013-10-23201310250247AMND
2013-10-23201310250245AMND
2013-10-23201310250249AMND
2014-04-09201404120300AMND
2014-07-15201407170569AMND