Know Your Environment. Protect Your Health.

Perfluorononanoic acid (PFNA)

Littleton 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.

 

164

Samples

0

Samples exceeding legal limit (MCL)

90

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
20190.0430 ppt181ND - 0.780 ppt
20200.516 ppt1813ND - 0.870 ppt
20210.627 ppt3930ND - 1.13 ppt
20220.479 ppt5126ND - 1.27 ppt
20230.511 ppt3720ND - 1.54 ppt
2024ND10ND

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 Result
2019-06-19ND
2019-06-19ND
2019-06-19ND
2019-08-06ND
2019-08-06ND
2019-08-06ND
2019-08-06ND
2019-08-06ND
2019-08-06ND
2019-08-06ND
2019-08-06ND
2019-09-23ND
2019-09-23ND
2019-09-23ND
2019-11-18ND
2019-12-09ND
2019-12-090.780 ppt
2019-12-09ND
2020-07-28ND
2020-07-280.760 ppt
2020-07-28ND
2020-10-150.608 ppt
2020-10-15ND
2020-10-150.781 ppt
2020-10-150.520 ppt
2020-10-15ND
2020-10-15ND
2020-10-150.870 ppt
2020-10-150.837 ppt
2020-11-040.747 ppt
2020-11-040.818 ppt
2020-11-040.719 ppt
2020-11-040.747 ppt
2020-12-020.724 ppt
2020-12-020.528 ppt
2020-12-020.627 ppt
2021-01-120.854 ppt
2021-01-120.745 ppt
2021-01-120.608 ppt
2021-02-081.04 ppt
2021-02-080.519 ppt
2021-02-080.573 ppt
2021-03-171.13 ppt
2021-03-171.000 ppt
2021-03-171.000 ppt
2021-03-171.13 ppt
2021-03-170.864 ppt
2021-03-170.864 ppt
2021-04-050.786 ppt
2021-04-050.810 ppt
2021-04-050.642 ppt
2021-05-120.713 ppt
2021-05-12ND
2021-05-12ND
2021-06-080.831 ppt
2021-06-08ND
2021-06-080.936 ppt
2021-07-21ND
2021-07-21ND
2021-07-210.700 ppt
2021-09-080.669 ppt
2021-09-080.783 ppt
2021-09-080.922 ppt
2021-10-060.908 ppt
2021-10-060.699 ppt
2021-10-060.613 ppt
2021-10-130.849 ppt
2021-10-21ND
2021-10-28ND
2021-11-150.811 ppt
2021-11-150.722 ppt
2021-11-150.974 ppt
2021-12-14ND
2021-12-140.739 ppt
2021-12-14ND
2022-01-110.922 ppt
2022-01-110.717 ppt
2022-01-11ND
2022-01-18ND
2022-02-16ND
2022-02-160.930 ppt
2022-02-160.702 ppt
2022-03-161.03 ppt
2022-03-16ND
2022-03-160.809 ppt
2022-04-201.27 ppt
2022-04-201.25 ppt
2022-04-25ND
2022-04-270.648 ppt
2022-05-161.13 ppt
2022-05-160.924 ppt
2022-05-18ND
2022-05-18ND
2022-05-18ND
2022-06-220.809 ppt
2022-06-22ND
2022-06-220.845 ppt
2022-06-22ND
2022-07-13ND
2022-07-13ND
2022-07-130.837 ppt
2022-07-131.08 ppt
2022-07-13ND
2022-07-13ND
2022-08-03ND
2022-08-03ND
2022-08-030.967 ppt
2022-08-030.770 ppt
2022-09-261.06 ppt
2022-09-261.05 ppt
2022-09-27ND
2022-09-27ND
2022-10-190.935 ppt
2022-10-191.18 ppt
2022-10-190.990 ppt
2022-10-27ND
2022-10-27ND
2022-10-27ND
2022-11-070.886 ppt
2022-11-070.961 ppt
2022-11-09ND
2022-11-09ND
2022-12-20ND
2022-12-200.781 ppt
2022-12-200.939 ppt
2022-12-20ND
2023-01-031.03 ppt
2023-01-030.937 ppt
2023-01-24ND
2023-01-24ND
2023-01-24ND
2023-01-240.715 ppt
2023-02-01ND
2023-02-010.833 ppt
2023-03-07ND
2023-03-070.672 ppt
2023-04-18ND
2023-04-18ND
2023-04-18ND
2023-04-18ND
2023-05-170.834 ppt
2023-05-171.13 ppt
2023-05-17ND
2023-06-160.765 ppt
2023-06-16ND
2023-07-25ND
2023-07-251.20 ppt
2023-07-25ND
2023-07-25ND
2023-07-250.909 ppt
2023-07-250.632 ppt
2023-08-211.08 ppt
2023-08-21ND
2023-09-191.54 ppt
2023-09-191.06 ppt
2023-10-030.656 ppt
2023-10-030.988 ppt
2023-10-031.16 ppt
2023-10-120.940 ppt
2023-11-280.857 ppt
2023-11-280.974 ppt
2023-11-28ND
2023-12-19ND
2024-07-17ND