Know Your Environment. Protect Your Health.

Perfluorononanoic acid (PFNA)

San Antonio Water Company

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.

 

16

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
2019ND90ND
2020ND30ND
2021N/A00N/A
2022ND10ND
2023ND30ND

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
2019-06-11CA3610085_003_003-201906110854ND
2019-06-11CA3610085_004_004-201906110836ND
2019-06-11CA3610085_011_011-201906110842ND
2019-09-03CA3610085_003_003-201909030939ND
2019-09-03CA3610085_004_004-201909030946ND
2019-09-03CA3610085_011_011-201909030950ND
2019-12-11CA3610085_003_003-201912111030ND
2019-12-11CA3610085_011_011-201912111037ND
2019-12-11CA3610085_004_004-201912111040ND
2020-03-03CA3610085_003_003-202003031000ND
2020-03-03CA3610085_004_004-202003030950ND
2020-03-03CA3610085_011_011-202003031020ND
2022-11-29CA3610085_021_021-202211290922ND
2023-04-20CA3610085_021_021-202304201200ND
2023-07-11CA3610085_021_021-202307111200ND
2023-10-17CA3610085_021_021-202310171045ND