Perfluorononanoic acid (PFNA)
Warminster Municipal Authority
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.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | ND | 22 | 0 | ND |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | N/A | 0 | 0 | N/A |
| 2020 | ND | 1 | 0 | ND |
| 2021 | 0.450 ppt | 40 | 4 | ND - 4.80 ppt |
| 2022 | 1.21 ppt | 142 | 46 | ND - 4.60 ppt |
| 2023 | 0.667 ppt | 85 | 16 | ND - 4.40 ppt |
| 2024 | ND | 1 | 0 | ND |
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 |
|---|---|---|
| 2021-07-07 | 24810998.00 | ND |
| 2021-07-07 | 24811010.00 | ND |
| 2021-07-07 | 24811034.00 | ND |
| 2021-07-07 | 24811046.00 | ND |
| 2021-07-07 | 24810962.00 | ND |
| 2021-07-07 | 24810974.00 | ND |
| 2021-09-01 | 25202809.00 | ND |
| 2021-09-01 | 25202821.00 | ND |
| 2021-09-01 | 25202773.00 | ND |
| 2021-09-01 | 25202785.00 | ND |
| 2021-09-15 | 25386691.00 | ND |
| 2021-09-15 | 25386739.00 | ND |
| 2021-09-15 | 25386703.00 | ND |
| 2021-09-15 | 25386715.00 | ND |
| 2021-10-12 | 25571156.00 | ND |
| 2021-10-12 | 25571168.00 | ND |
| 2021-10-12 | 25571120.00 | ND |
| 2021-10-12 | 25571132.00 | ND |
| 2021-10-21 | 25387386.00 | ND |
| 2021-10-21 | 25387410.00 | ND |
| 2021-11-03 | 25571192.00 | ND |
| 2021-11-03 | 25571240.00 | ND |
| 2021-11-03 | 25571204.00 | ND |
| 2021-11-03 | 25571216.00 | ND |
| 2021-11-17 | 25571980.00 | ND |
| 2021-11-17 | 25572016.00 | 4.80 ppt |
| 2021-11-17 | 25572028.00 | ND |
| 2021-11-17 | 25571968.00 | 4.60 ppt |
| 2021-11-17 | 25571992.00 | ND |
| 2021-11-17 | 25572004.00 | ND |
| 2021-12-01 | 25747162.00 | ND |
| 2021-12-01 | 25747210.00 | ND |
| 2021-12-01 | 25747174.00 | ND |
| 2021-12-01 | 25747186.00 | ND |
| 2021-12-14 | 25747339.00 | ND |
| 2021-12-14 | 25747375.00 | 4.40 ppt |
| 2021-12-14 | 25747387.00 | ND |
| 2021-12-14 | 25747327.00 | 4.20 ppt |
| 2021-12-14 | 25747351.00 | ND |
| 2021-12-14 | 25747363.00 | ND |
| 2022-01-05 | 25925293.00 | ND |
| 2022-01-05 | 25925329.00 | 4.60 ppt |
| 2022-01-05 | 25925341.00 | ND |
| 2022-01-05 | 25925281.00 | 4.10 ppt |
| 2022-01-05 | 25925305.00 | ND |
| 2022-01-05 | 25925317.00 | ND |
| 2022-01-19 | 25925957.00 | ND |
| 2022-01-19 | 25925993.00 | 4.40 ppt |
| 2022-01-19 | 25926005.00 | ND |
| 2022-01-19 | 25925945.00 | 3.70 ppt |
| 2022-01-19 | 25925969.00 | ND |
| 2022-01-19 | 25925981.00 | ND |
| 2022-02-02 | 26101417.00 | ND |
| 2022-02-02 | 26101453.00 | 4.30 ppt |
| 2022-02-02 | 26101465.00 | ND |
| 2022-02-02 | 26101405.00 | 4.00 ppt |
| 2022-02-02 | 26101429.00 | ND |
| 2022-02-02 | 26101441.00 | ND |
| 2022-02-16 | 26101937.00 | ND |
| 2022-02-16 | 26101973.00 | 4.50 ppt |
| 2022-02-16 | 26101985.00 | ND |
| 2022-02-16 | 26101925.00 | 3.90 ppt |
| 2022-02-16 | 26101949.00 | ND |
| 2022-02-16 | 26101961.00 | ND |
| 2022-03-02 | 26102149.00 | ND |
| 2022-03-02 | 26102185.00 | 4.50 ppt |
| 2022-03-02 | 26102197.00 | ND |
| 2022-03-02 | 26102137.00 | 3.50 ppt |
| 2022-03-02 | 26102161.00 | ND |
| 2022-03-02 | 26102173.00 | ND |
| 2022-03-15 | 26271116.00 | ND |
| 2022-03-15 | 26271152.00 | 4.30 ppt |
| 2022-03-15 | 26271164.00 | ND |
| 2022-03-15 | 26271104.00 | 3.30 ppt |
| 2022-03-15 | 26271128.00 | ND |
| 2022-03-15 | 26271140.00 | ND |
| 2022-04-06 | 26446021.00 | ND |
| 2022-04-06 | 26446057.00 | 3.70 ppt |
| 2022-04-06 | 26446069.00 | ND |
| 2022-04-06 | 26446009.00 | 2.80 ppt |
| 2022-04-06 | 26446033.00 | ND |
| 2022-04-06 | 26446045.00 | ND |
| 2022-04-19 | 26446674.00 | ND |
| 2022-04-19 | 26446710.00 | 4.00 ppt |
| 2022-04-19 | 26446722.00 | ND |
| 2022-04-19 | 26446662.00 | 3.00 ppt |
| 2022-04-19 | 26446686.00 | ND |
| 2022-04-19 | 26446698.00 | ND |
| 2022-05-04 | 26630207.00 | ND |
| 2022-05-04 | 26630243.00 | 3.60 ppt |
| 2022-05-04 | 26630255.00 | ND |
| 2022-05-04 | 26630195.00 | 3.10 ppt |
| 2022-05-04 | 26630219.00 | ND |
| 2022-05-04 | 26630231.00 | ND |
| 2022-05-23 | 26630896.00 | ND |
| 2022-05-23 | 26630932.00 | 3.80 ppt |
| 2022-05-23 | 26630944.00 | ND |
| 2022-05-23 | 26630884.00 | 3.20 ppt |
| 2022-05-23 | 26630908.00 | ND |
| 2022-05-23 | 26630920.00 | ND |
| 2022-06-01 | 26825185.00 | ND |
| 2022-06-01 | 26825233.00 | ND |
| 2022-06-01 | 26825197.00 | ND |
| 2022-06-01 | 26825209.00 | ND |
| 2022-06-14 | 26825257.00 | ND |
| 2022-06-14 | 26825293.00 | 3.90 ppt |
| 2022-06-14 | 26825305.00 | ND |
| 2022-06-14 | 26825245.00 | 3.10 ppt |
| 2022-06-14 | 26825269.00 | ND |
| 2022-06-14 | 26825281.00 | ND |
| 2022-07-08 | 27019751.00 | ND |
| 2022-07-08 | 27019787.00 | 4.20 ppt |
| 2022-07-08 | 27019799.00 | ND |
| 2022-07-08 | 27019739.00 | 3.30 ppt |
| 2022-07-08 | 27019763.00 | ND |
| 2022-07-08 | 27019775.00 | ND |
| 2022-07-25 | 27214894.00 | ND |
| 2022-07-25 | 27214930.00 | 4.20 ppt |
| 2022-07-25 | 27214942.00 | ND |
| 2022-07-25 | 27214882.00 | 3.60 ppt |
| 2022-07-25 | 27214906.00 | ND |
| 2022-07-25 | 27214918.00 | ND |
| 2022-08-03 | 27214966.00 | ND |
| 2022-08-03 | 27215002.00 | 3.20 ppt |
| 2022-08-03 | 27215014.00 | ND |
| 2022-08-03 | 27214954.00 | 3.20 ppt |
| 2022-08-03 | 27214978.00 | ND |
| 2022-08-03 | 27214990.00 | ND |
| 2022-08-17 | 27215676.00 | ND |
| 2022-08-17 | 27215712.00 | 4.10 ppt |
| 2022-08-17 | 27215724.00 | ND |
| 2022-08-17 | 27215664.00 | 3.60 ppt |
| 2022-08-17 | 27215688.00 | ND |
| 2022-08-17 | 27215700.00 | ND |
| 2022-09-07 | 27421581.00 | ND |
| 2022-09-07 | 27421617.00 | 3.20 ppt |
| 2022-09-07 | 27421629.00 | ND |
| 2022-09-07 | 27421569.00 | 3.80 ppt |
| 2022-09-07 | 27421593.00 | ND |
| 2022-09-07 | 27421605.00 | ND |
| 2022-09-21 | 27422331.00 | ND |
| 2022-09-21 | 27422367.00 | 3.50 ppt |
| 2022-09-21 | 27422379.00 | ND |
| 2022-09-21 | 27422319.00 | 4.00 ppt |
| 2022-09-21 | 27422343.00 | ND |
| 2022-09-21 | 27422355.00 | ND |
| 2022-10-05 | 27624780.00 | 3.20 ppt |
| 2022-10-05 | 27624792.00 | ND |
| 2022-10-05 | 27624804.00 | ND |
| 2022-10-05 | 27624744.00 | 3.50 ppt |
| 2022-10-05 | 27624756.00 | ND |
| 2022-10-05 | 27624768.00 | ND |
| 2022-10-19 | 27625349.00 | 3.40 ppt |
| 2022-10-19 | 27625361.00 | ND |
| 2022-10-19 | 27625373.00 | ND |
| 2022-10-19 | 27625313.00 | 3.50 ppt |
| 2022-10-19 | 27625325.00 | ND |
| 2022-10-19 | 27625337.00 | ND |
| 2022-11-02 | 27806469.00 | ND |
| 2022-11-02 | 27806505.00 | 3.70 ppt |
| 2022-11-02 | 27806517.00 | ND |
| 2022-11-02 | 27806457.00 | 3.40 ppt |
| 2022-11-02 | 27806481.00 | ND |
| 2022-11-02 | 27806493.00 | ND |
| 2022-11-16 | 27807162.00 | ND |
| 2022-11-16 | 27807198.00 | 4.20 ppt |
| 2022-11-16 | 27807210.00 | ND |
| 2022-11-16 | 27807150.00 | 4.30 ppt |
| 2022-11-16 | 27807174.00 | ND |
| 2022-11-16 | 27807186.00 | ND |
| 2022-12-07 | 27982266.00 | ND |
| 2022-12-07 | 27982302.00 | 4.40 ppt |
| 2022-12-07 | 27982314.00 | ND |
| 2022-12-07 | 27982254.00 | 3.70 ppt |
| 2022-12-07 | 27982278.00 | ND |
| 2022-12-07 | 27982290.00 | ND |
| 2022-12-21 | 27982338.00 | ND |
| 2022-12-21 | 27982374.00 | 4.30 ppt |
| 2022-12-21 | 27982386.00 | ND |
| 2022-12-21 | 27982326.00 | 3.50 ppt |
| 2022-12-21 | 27982350.00 | ND |
| 2022-12-21 | 27982362.00 | ND |
| 2023-01-04 | 28155439.00 | ND |
| 2023-01-04 | 28155475.00 | 3.50 ppt |
| 2023-01-04 | 28155487.00 | ND |
| 2023-01-04 | 28155427.00 | 3.30 ppt |
| 2023-01-04 | 28155451.00 | ND |
| 2023-01-04 | 28155463.00 | ND |
| 2023-01-18 | 28156007.00 | ND |
| 2023-01-18 | 28156043.00 | 3.90 ppt |
| 2023-01-18 | 28156055.00 | ND |
| 2023-01-18 | 28155995.00 | 3.50 ppt |
| 2023-01-18 | 28156019.00 | ND |
| 2023-01-18 | 28156031.00 | ND |
| 2023-02-01 | 28332867.00 | ND |
| 2023-02-01 | 28332903.00 | 3.70 ppt |
| 2023-02-01 | 28332915.00 | ND |
| 2023-02-01 | 28332855.00 | 3.00 ppt |
| 2023-02-01 | 28332879.00 | ND |
| 2023-02-01 | 28332891.00 | ND |
| 2023-02-14 | 28504145.00 | ND |
| 2023-02-14 | 28504181.00 | 3.50 ppt |
| 2023-02-14 | 28504193.00 | ND |
| 2023-02-14 | 28504133.00 | 3.20 ppt |
| 2023-02-14 | 28504157.00 | ND |
| 2023-02-14 | 28504169.00 | ND |
| 2023-03-01 | 28504846.00 | ND |
| 2023-03-01 | 28504882.00 | 3.80 ppt |
| 2023-03-01 | 28504894.00 | ND |
| 2023-03-01 | 28504834.00 | 3.20 ppt |
| 2023-03-01 | 28504858.00 | ND |
| 2023-03-01 | 28504870.00 | ND |
| 2023-03-15 | 28683101.00 | ND |
| 2023-03-15 | 28683137.00 | 3.90 ppt |
| 2023-03-15 | 28683149.00 | ND |
| 2023-03-15 | 28683089.00 | 3.20 ppt |
| 2023-03-15 | 28683113.00 | ND |
| 2023-03-15 | 28683125.00 | ND |
| 2023-04-04 | 28683173.00 | ND |
| 2023-04-04 | 28683209.00 | ND |
| 2023-04-04 | 28683221.00 | ND |
| 2023-04-04 | 28683161.00 | 3.00 ppt |
| 2023-04-04 | 28683185.00 | ND |
| 2023-04-04 | 28683197.00 | ND |
| 2023-04-19 | 28880671.00 | ND |
| 2023-04-19 | 28880719.00 | ND |
| 2023-04-19 | 28880683.00 | ND |
| 2023-04-19 | 28880695.00 | ND |
| 2023-04-28 | 28880731.00 | 4.40 ppt |
| 2023-05-03 | 28881409.00 | ND |
| 2023-05-03 | 28881445.00 | 4.30 ppt |
| 2023-05-03 | 28881457.00 | ND |
| 2023-05-03 | 28881397.00 | 3.30 ppt |
| 2023-05-03 | 28881421.00 | ND |
| 2023-05-03 | 28881433.00 | ND |
| 2023-05-17 | 29089393.00 | ND |
| 2023-05-17 | 29089417.00 | ND |
| 2023-06-07 | 29090062.00 | ND |
| 2023-06-07 | 29090086.00 | ND |
| 2023-06-21 | 29090122.00 | ND |
| 2023-06-21 | 29090123.00 | ND |
| 2023-07-05 | 29284789.00 | ND |
| 2023-07-05 | 29284791.00 | ND |
| 2023-07-19 | 29284682.00 | ND |
| 2023-07-19 | 29284681.00 | ND |
| 2023-08-02 | 29476876.00 | ND |
| 2023-08-16 | 29476877.00 | ND |
| 2023-08-16 | 29476874.00 | ND |
| 2023-08-23 | 29477577.00 | ND |
| 2023-09-06 | 29682810.00 | ND |
| 2023-09-14 | 29682861.00 | ND |
| 2023-09-20 | 29683393.00 | ND |
| 2023-09-20 | 29683444.00 | ND |
| 2023-10-04 | 29869365.00 | ND |
| 2023-10-04 | 29869414.00 | ND |
| 2023-10-18 | 29869525.00 | ND |
| 2023-10-18 | 29869471.00 | ND |
| 2023-10-31 | 3J05163-01 | ND |
| 2023-11-01 | 30053610.00 | ND |
| 2023-11-01 | 30053556.00 | ND |
| 2023-11-02 | 3J04715-01 | ND |
| 2023-11-15 | 30053718.00 | ND |
| 2023-11-15 | 30053664.00 | ND |
| 2023-12-06 | 30229371.00 | ND |
| 2023-12-06 | 30229317.00 | ND |
| 2023-12-18 | 30229576.00 | ND |
| 2023-12-18 | 30229522.00 | ND |
| 2024-02-07 | 4B00747-01 | ND |