Know Your Environment. Protect Your Health.

Perfluorononanoic acid (PFNA)

Kent Water District 1

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.

 

27

Samples

0

Samples exceeding legal limit (MCL)

10

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
2019N/A00N/A
2020N/A00N/A
20210.433 ppt82ND - 1.84 ppt
20220.427 ppt113ND - 1.59 ppt
20230.783 ppt85ND - 1.49 ppt

ppt = parts per trillion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.006 ppt

The EWG Health Guideline of 6 ppt for perfluorononanoic acid was defined by EPA recommended application of the toxicity value for PFDA published in the Integrated Risk Information System’s toxicological review . This health guideline harm to the immune system and harm to fetal growth and child development.

EPA Maximum Contaminant
Level (MCL): 10 ppt

ppt = parts per trillion

All test results

Date Lab ID Result
2021-04-13CH99465PFASND
2021-04-13CH99466PFASND
2021-05-06CI25412PFASND
2021-09-17CJ31770ND
2021-10-14CJ562221.84 ppt
2021-11-30CJ88192ND
2021-11-30CJ881911.62 ppt
2021-12-29CK07047ND
2022-03-11CK88108PFASND
2022-04-05CL100481.55 ppt
2022-05-09CL28454ND
2022-05-09CL284531.59 ppt
2022-06-06CL516501.56 ppt
2022-06-06CL51649ND
2022-08-08CM01023ND
2022-08-08CM01022ND
2022-09-13CM31545ND
2022-12-02CM98187ND
2022-12-02CM98186ND
2023-01-03CN165981.47 ppt
2023-02-20CN47643ND
2023-02-20CN47644ND
2023-05-17CO08298PFAS0.975 ppt
2023-05-17CO08297PFASND
2023-06-14CO28336PFAS1.31 ppt
2023-07-27CO60600PFAS1.02 ppt
2023-08-31CO88139PFAS1.49 ppt