Know Your Environment. Protect Your Health.

Perfluorononanoic acid (PFNA)

Mount Kisco Water Department

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.

 

29

Samples

0

Samples exceeding legal limit (MCL)

1

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014N/A00N/A
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
2019N/A00N/A
2020N/A00N/A
2021ND130ND
2022ND40ND
20230.234 ppt91ND - 2.11 ppt
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

Date Lab ID Result
2021-05-12L212522-01-PFASND
2021-05-12L212522-05-PFASND
2021-05-12L212522-06-PFASND
2021-05-12L2125221-04-PFASND
2021-05-12L2125221-03-PFASND
2021-08-24L21445595-06-PFASND
2021-08-24L2145595-07-PFASND
2021-08-24L2145595-05-PFASND
2021-08-24L2145595-01-PFASND
2021-11-15L2163351-06-PFASND
2021-11-15L2163351-07-PFASND
2021-11-15L2163351-05-PFASND
2021-11-15L216335-01-PFASND
2022-08-15420-232326-5-PFASND
2022-08-15420-232326-1-PFASND
2022-08-15420-232326-6-PFASND
2022-08-15420-232326-7-PFASND
2023-01-05AZ00337-PFASND
2023-06-2623F3504-01-PFASND
2023-09-25AZ17746-PFASND
2023-09-25AZ17750-PFASND
2023-09-25AZ17747-PFASND
2023-09-25AZ17749-PFASND
2023-09-25AZ17748-PFAS2.11 ppt
2023-12-11AZ22401-PFASND
2023-12-12AZ22494-PFASND
2024-03-20114674PND
2024-03-20114675PND
2024-06-19117926PND