Know Your Environment. Protect Your Health.

Perfluorononanoic acid (PFNA)

Polk City Water Supply

NOTE: Polk City Water Supply purchases water from Des Moines Water Works which is required to test for perfluorononanoic acid (pfna). Sample information shown below was taken by Des Moines Water Works.

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.

 

12

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
2020N/A00N/A
2021N/A00N/A
2022N/A00N/A
2023ND40ND

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: Polk City Water Supply purchases water from Des Moines Water Works which is required to test for perfluorononanoic acid (pfna). Sample information shown below was taken by Des Moines Water Works.

Date Lab ID Result
2023-02-142242290ND
2023-02-142242288ND
2023-03-212256435ND
2023-05-092278162ND
2023-05-092278206ND
2023-05-102278900ND
2023-08-152322915ND
2023-08-152322914ND
2023-08-162323619ND
2023-11-142363581ND
2023-11-142363598ND
2023-11-142363579ND