Know Your Environment. Protect Your Health.

Perfluorononanoic acid (PFNA)

Marysville Utilities

NOTE: Marysville Utilities purchases water from City of Everett Public Works Department which is required to test for perfluorononanoic acid (pfna). Sample information shown below was taken by City of Everett Public Works Department.

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.

 

8

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014N/A00N/A
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
2019N/A00N/A
2020N/A00N/A
2021N/A00N/A
2022ND70ND
2023ND160ND

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

NOTE: Marysville Utilities purchases water from City of Everett Public Works Department which is required to test for perfluorononanoic acid (pfna). Sample information shown below was taken by City of Everett Public Works Department.

Date Lab ID Result
2023-02-234569021ND
2023-02-234569020ND
2023-05-164569022ND
2023-05-164569019ND
2023-08-154569023ND
2023-08-154569017ND
2023-11-074569024ND
2023-11-074569018ND