Know Your Environment. Protect Your Health.

Perfluorononanoic acid (PFNA)

City of Spokane

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.

 

21

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
2019N/A00N/A
2020N/A00N/A
2021N/A00N/A
2022N/A00N/A
2023ND110ND
2024ND100ND

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
2023-03-204429397ND
2023-03-204429398ND
2023-03-204429399ND
2023-03-224429395ND
2023-03-224429396ND
2023-03-224429394ND
2023-04-254510967ND
2023-04-254510968ND
2023-07-254507771ND
2023-09-254524715ND
2023-10-244539391ND
2024-02-20WEB0707-04ND
2024-02-20WEB0707-03ND
2024-02-20WEB0707-02ND
2024-02-20WEB0707-01ND
2024-04-23WED1017-01ND
2024-07-17WEG0740-01ND
2024-08-27WEH1233-01ND
2024-08-27WEH1233-03ND
2024-08-27WEH1233-02ND
2024-08-27WEH1233-05ND