Know Your Environment. Protect Your Health.

Perfluorononanoic acid (PFNA)

Cws-split Mountain 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.

 

11

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
2019N/A00N/A
2020ND40ND
2021N/A00N/A
2022N/A00N/A
2023ND70ND

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
2020-04-07CA1500407_005_005-202004071406ND
2020-04-07CA1500407_006_006-202004071355ND
2020-04-07CA1500407_002_002-202004071203ND
2020-04-07CA1500407_007_007-202004070959ND
2023-02-07CA1500407_007_007-202302071400ND
2023-02-07CA1500407_007_007-202302071400ND
2023-02-07CA1500407_007_007-202302071400ND
2023-09-20CA1500407_006_006-202309200925ND
2023-09-20CA1500407_006_006-202309200929ND
2023-10-12CA1500407_006_006-202310121256ND
2023-12-19CA1500407_006_006-202312191423ND