Know Your Environment. Protect Your Health.

Perfluorononanoic acid (PFNA)

Woodbury City 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.

 

30

Samples

0

Samples exceeding legal limit (MCL)

1

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
2018ND450ND
2019ND390ND
20206.10 ppt101ND - 61.0 ppt
2021ND60ND
2022ND50ND
2023ND50ND
2024ND40ND

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
2020-01-29L7187087-161.0 ppt
2020-02-04L7187435-1ND
2020-02-04L7187435-3ND
2020-04-23L7193911-1ND
2020-04-23L7193911-3ND
2020-04-23L7193911-5ND
2020-07-15630-2956-1ND
2020-07-15630-2956-3ND
2020-10-06630-8083-1ND
2020-10-06630-8083-3ND
2021-02-22630-13814-4ND
2021-02-23630-13847-4ND
2021-03-18630-14922-2ND
2021-04-14630-16047-1ND
2021-07-13630-19530-1ND
2021-10-06630-22837-1ND
2022-01-26630-26657-1ND
2022-01-27630-26702-1ND
2022-04-13630-31204-1ND
2022-04-13630-31204-3ND
2022-04-26630-32051-1ND
2023-11-16V134147PFASND
2023-11-16V134148PFASND
2023-12-2635850427001SE1ND
2023-12-2635850427003SE1ND
2023-12-2635850429001SE1ND
2024-03-0435864261001SE2ND
2024-06-0435883774001SE2ND
2024-06-0435883774003SE2ND
2024-06-0435883765001SE3ND