Know Your Environment. Protect Your Health.

Perfluorononanoic acid (PFNA)

Kennett Square Municipal Water Works

NOTE: Kennett Square Municipal Water Works purchases water from Chester Water Authority which is required to test for perfluorononanoic acid (pfna). Sample information shown below was taken by Chester Water Authority.

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.

 

3

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
2020ND10ND
2021N/A00N/A
2022N/A00N/A
2023ND160ND
2024ND30ND

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: Kennett Square Municipal Water Works purchases water from Chester Water Authority which is required to test for perfluorononanoic acid (pfna). Sample information shown below was taken by Chester Water Authority.

Date Lab ID Result
2024-02-12810-93667-1ND
2024-05-06810-103317-1ND
2024-08-08810-115454-1ND