Know Your Environment. Protect Your Health.

Perfluorononanoic acid (PFNA)

California Water Service Company Oak Hills

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.

 

13

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014N/A00N/A
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
2019N/A00N/A
2020ND30ND
2021N/A00N/A
2022N/A00N/A
2023ND90ND
2024ND10ND

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
2020-05-04CA2710019_008_008-202005041030ND
2020-05-07CA2710019_001_001-202005071005ND
2020-08-06CA2710019_003_003-202008061210ND
2023-05-22103699PND
2023-05-22103700PND
2023-11-07CA2710019_003_003-202311071424ND
2023-11-07CA2710019_008_008-202311071403ND
2023-11-15CA2710019_003_003-202311151018ND
2023-11-15CA2710019_008_008-202311151034ND
2023-11-21CA2710019_001_001-202311211308ND
2023-11-21CA2710019_001_001-202311211309ND
2023-12-18110232PND
2024-01-22112719RND