Know Your Environment. Protect Your Health.

Perfluorononanoic acid (PFNA)

North Castle Water District #4

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.

 

52

Samples

0

Samples exceeding legal limit (MCL)

12

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
2019N/A00N/A
2020N/A00N/A
20210.231 ppt92ND - 1.13 ppt
20220.194 ppt204ND - 1.11 ppt
20230.214 ppt236ND - 1.18 ppt

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
2021-08-10L214312301-PFASND
2021-08-10L214312302-PFASND
2021-08-11L214313405-PFASND
2021-08-11L214313403-PFAS1.13 ppt
2021-09-30L215350401-PFASND
2021-12-28L217129101-PFAS0.946 ppt
2021-12-28L217129603-PFASND
2021-12-28L217129602-PFASND
2021-12-28L217129104-PFASND
2022-02-10L220739201-PFASND
2022-03-29L221627006-PFAS1.11 ppt
2022-03-29L221627003-PFASND
2022-03-29L221627005-PFASND
2022-03-29L221627001-PFASND
2022-05-05L222365901-PFASND
2022-06-28L2234461-01-PFASND
2022-06-28L2234461-05-PFASND
2022-06-28L2234461-02-PFASND
2022-06-28L2234461-04-PFAS0.917 ppt
2022-08-01L2241135-05-PFASND
2022-09-28L2253737-01-PFASND
2022-09-28L2253737-04-PFASND
2022-09-28L2253737-03-PFAS1.08 ppt
2022-09-28L2253737-02-PFASND
2022-10-26L2259860-05-PFASND
2022-12-01L2267398-09-PFAS0.766 ppt
2022-12-01L2267398-10-PFASND
2022-12-01L2267398-07-PFASND
2022-12-01L2267398-08-PFASND
2023-01-05L2300642-01-PFASND
2023-02-16L2308678-05-PFASND
2023-02-16L2308678-02-PFASND
2023-02-16L2308678-04-PFAS0.741 ppt
2023-02-16L2308678-01-PFASND
2023-02-16L2308678-03-PFAS0.819 ppt
2023-03-27L2315931-01-PFASND
2023-05-04L2324575-04-PFASND
2023-05-04L2324575-05-PFASND
2023-05-04L2324575-03-PFAS0.748 ppt
2023-05-04L2324575-02-PFASND
2023-05-04L2324575-01-PFASND
2023-06-06L2331570-01-PFASND
2023-08-15L2347441-03-PFASND
2023-08-15L2347441-02-PFASND
2023-08-15L2347441-01-PFAS0.806 ppt
2023-08-15L2347441-04-PFASND
2023-09-27L2357061-01-PFASND
2023-10-31L2364493-04-PFASND
2023-10-31L2364493-06-PFASND
2023-10-31L2364493-03-PFAS1.18 ppt
2023-10-31L2364493-01-PFASND
2023-10-31L2364493-02-PFAS0.620 ppt