Know Your Environment. Protect Your Health.

Perfluorononanoic acid (PFNA)

North Castle Water District #2

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.

 

69

Samples

0

Samples exceeding legal limit (MCL)

31

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
2019N/A00N/A
2020N/A00N/A
20210.217 ppt134ND - 0.772 ppt
20220.553 ppt2919ND - 1.15 ppt
20230.234 ppt278ND - 1.21 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
2021-08-11L214313801-PFASND
2021-08-23L214531203-PFASND
2021-08-23L214531201-PFASND
2021-08-23L214531202-PFAS0.678 ppt
2021-08-24L214531205-PFASND
2021-10-01L215350301-PFASND
2021-10-01L215350302-PFAS0.630 ppt
2021-11-05L216117901-PFASND
2021-12-28L217128704-PFASND
2021-12-28L217128702-PFASND
2021-12-28L217128703-PFAS0.772 ppt
2021-12-28L217128701-PFAS0.735 ppt
2021-12-28L217128705-PFASND
2022-02-10L220739903-PFASND
2022-02-10L220739901-PFAS1.01 ppt
2022-02-10L220739902-PFAS0.690 ppt
2022-03-27L2315936-02-PFASND
2022-03-29L221626003-PFAS0.791 ppt
2022-03-29L221626005-PFASND
2022-03-29L221626001-PFASND
2022-03-29L221626004-PFAS0.906 ppt
2022-05-05L222365702-PFAS0.853 ppt
2022-05-05L222365701-PFAS1.15 ppt
2022-05-05L222365703-PFASND
2022-06-28L2234455-01-PFAS1.04 ppt
2022-06-28L2234455-02-PFAS1.07 ppt
2022-06-28L2234455-03-PFASND
2022-06-28L2234455-04-PFASND
2022-08-01L2241135-01-PFAS0.640 ppt
2022-08-01L2241135-03-PFAS0.701 ppt
2022-08-01L2241135-02-PFAS0.676 ppt
2022-09-28L2253716-04-PFAS0.718 ppt
2022-09-28L2253716-03-PFASND
2022-09-28L2253716-01-PFAS0.708 ppt
2022-09-28L2253716-02-PFAS0.740 ppt
2022-10-26L2259860-01-PFAS0.696 ppt
2022-10-26L2259860-02-PFAS1.15 ppt
2022-10-26L2259860-03-PFAS0.934 ppt
2022-12-01L2267398-04-PFAS0.745 ppt
2022-12-01L2267398-03-PFASND
2022-12-01L2267398-02-PFAS0.826 ppt
2022-12-01L2267398-01-PFASND
2023-01-05L2300642-04-PFAS0.861 ppt
2023-01-05L2300642-03-PFASND
2023-02-16L2308675-01-PFASND
2023-02-16L2308675-04-PFAS0.633 ppt
2023-02-16L2308675-02-PFAS0.665 ppt
2023-02-16L2308675-03-PFASND
2023-02-16L2308675-05-PFASND
2023-03-27L2315936-01-PFASND
2023-05-04L2324681-04-PFASND
2023-05-04L2324681-05-PFASND
2023-05-17L2324681-01-PFASND
2023-05-17L2324681-03-PFASND
2023-05-17L2324681-02-PFAS0.816 ppt
2023-06-06L2331620-02-PFAS0.680 ppt
2023-06-06L2331620-01-PFASND
2023-08-15L2347438-03-PFASND
2023-08-15L2347438-04-PFAS0.727 ppt
2023-08-15L2347438-01-PFASND
2023-08-15L2347438-02-PFAS0.727 ppt
2023-09-27L2357063-03-PFASND
2023-09-27L2357063-01-PFASND
2023-09-27L2357063-02-PFASND
2023-10-31L2364496-06-PFASND
2023-10-31L2364496-01-PFASND
2023-10-31L2364496-03-PFASND
2023-10-31L2364496-02-PFAS1.21 ppt
2023-10-31L2364496-04-PFASND