Perfluoroheptanoic acid (PFHPA)
Warminster Municipal Authority
Perfluoroheptanoic acid is a member of a group of perfluorinated chemicals used in many consumer products. Perfluorinated chemicals can cause serious health effects, including cancer, endocrine disruption, accelerated puberty, liver and immune system damage, and thyroid changes. These chemicals are persistent in the environment and they accumulate in people. 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 | 2.97 ppt | 40 | 19 | ND - 21.0 ppt |
| 2022 | 6.73 ppt | 142 | 84 | ND - 20.0 ppt |
| 2023 | 2.69 ppt | 85 | 16 | ND - 17.0 ppt |
| 2024 | ND | 1 | 0 | ND |
ppt = parts per trillion
State, National, and Health Guidelines for Drinking Water
EWG Health Guideline: 1,000 ppt
The EWG Health Guideline of 1,000 ppt for perfluoroheptanoic acid was defined by EPA's recommended application of the toxicity value for PFHxA published in the Integrated Risk Information System’s toxicological review. This health guideline harm to fetal growth and child development.
ppt = parts per trillion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2021-07-07 | 24810996.00 | ND |
| 2021-07-07 | 24811008.00 | ND |
| 2021-07-07 | 24811032.00 | ND |
| 2021-07-07 | 24811044.00 | ND |
| 2021-07-07 | 24810960.00 | ND |
| 2021-07-07 | 24810972.00 | ND |
| 2021-09-01 | 25202806.00 | 2.40 ppt |
| 2021-09-01 | 25202818.00 | 2.40 ppt |
| 2021-09-01 | 25202770.00 | ND |
| 2021-09-01 | 25202782.00 | ND |
| 2021-09-15 | 25386688.00 | 2.50 ppt |
| 2021-09-15 | 25386736.00 | 2.30 ppt |
| 2021-09-15 | 25386700.00 | ND |
| 2021-09-15 | 25386712.00 | ND |
| 2021-10-12 | 25571153.00 | 2.80 ppt |
| 2021-10-12 | 25571165.00 | 2.70 ppt |
| 2021-10-12 | 25571117.00 | ND |
| 2021-10-12 | 25571129.00 | ND |
| 2021-10-21 | 25387383.00 | 3.00 ppt |
| 2021-10-21 | 25387407.00 | ND |
| 2021-11-03 | 25571189.00 | 2.90 ppt |
| 2021-11-03 | 25571237.00 | 3.00 ppt |
| 2021-11-03 | 25571201.00 | ND |
| 2021-11-03 | 25571213.00 | ND |
| 2021-11-17 | 25571977.00 | 3.30 ppt |
| 2021-11-17 | 25572013.00 | 21.0 ppt |
| 2021-11-17 | 25572025.00 | 3.50 ppt |
| 2021-11-17 | 25571965.00 | 17.0 ppt |
| 2021-11-17 | 25571989.00 | ND |
| 2021-11-17 | 25572001.00 | ND |
| 2021-12-01 | 25747159.00 | 3.40 ppt |
| 2021-12-01 | 25747207.00 | 3.20 ppt |
| 2021-12-01 | 25747171.00 | ND |
| 2021-12-01 | 25747183.00 | ND |
| 2021-12-14 | 25747336.00 | 3.70 ppt |
| 2021-12-14 | 25747372.00 | 19.0 ppt |
| 2021-12-14 | 25747384.00 | 4.80 ppt |
| 2021-12-14 | 25747324.00 | 16.0 ppt |
| 2021-12-14 | 25747348.00 | ND |
| 2021-12-14 | 25747360.00 | ND |
| 2022-01-05 | 25925290.00 | 3.70 ppt |
| 2022-01-05 | 25925326.00 | 19.0 ppt |
| 2022-01-05 | 25925338.00 | 3.90 ppt |
| 2022-01-05 | 25925278.00 | 17.0 ppt |
| 2022-01-05 | 25925302.00 | ND |
| 2022-01-05 | 25925314.00 | ND |
| 2022-01-19 | 25925954.00 | 3.90 ppt |
| 2022-01-19 | 25925990.00 | 20.0 ppt |
| 2022-01-19 | 25926002.00 | 4.10 ppt |
| 2022-01-19 | 25925942.00 | 16.0 ppt |
| 2022-01-19 | 25925966.00 | ND |
| 2022-01-19 | 25925978.00 | ND |
| 2022-02-02 | 26101414.00 | 4.20 ppt |
| 2022-02-02 | 26101450.00 | 20.0 ppt |
| 2022-02-02 | 26101462.00 | 4.40 ppt |
| 2022-02-02 | 26101402.00 | 17.0 ppt |
| 2022-02-02 | 26101426.00 | ND |
| 2022-02-02 | 26101438.00 | ND |
| 2022-02-16 | 26101934.00 | 4.90 ppt |
| 2022-02-16 | 26101970.00 | 19.0 ppt |
| 2022-02-16 | 26101982.00 | 5.20 ppt |
| 2022-02-16 | 26101922.00 | 15.0 ppt |
| 2022-02-16 | 26101946.00 | ND |
| 2022-02-16 | 26101958.00 | ND |
| 2022-03-02 | 26102146.00 | 4.90 ppt |
| 2022-03-02 | 26102182.00 | 19.0 ppt |
| 2022-03-02 | 26102194.00 | 4.30 ppt |
| 2022-03-02 | 26102134.00 | 14.0 ppt |
| 2022-03-02 | 26102158.00 | ND |
| 2022-03-02 | 26102170.00 | ND |
| 2022-03-15 | 26271113.00 | 4.80 ppt |
| 2022-03-15 | 26271149.00 | 17.0 ppt |
| 2022-03-15 | 26271161.00 | 4.80 ppt |
| 2022-03-15 | 26271101.00 | 12.0 ppt |
| 2022-03-15 | 26271125.00 | ND |
| 2022-03-15 | 26271137.00 | ND |
| 2022-04-06 | 26446018.00 | 4.50 ppt |
| 2022-04-06 | 26446054.00 | 15.0 ppt |
| 2022-04-06 | 26446066.00 | 4.60 ppt |
| 2022-04-06 | 26446006.00 | 11.0 ppt |
| 2022-04-06 | 26446030.00 | ND |
| 2022-04-06 | 26446042.00 | ND |
| 2022-04-19 | 26446671.00 | 5.70 ppt |
| 2022-04-19 | 26446707.00 | 16.0 ppt |
| 2022-04-19 | 26446719.00 | 6.10 ppt |
| 2022-04-19 | 26446659.00 | 12.0 ppt |
| 2022-04-19 | 26446683.00 | ND |
| 2022-04-19 | 26446695.00 | ND |
| 2022-05-04 | 26630204.00 | 5.50 ppt |
| 2022-05-04 | 26630240.00 | 15.0 ppt |
| 2022-05-04 | 26630252.00 | 5.80 ppt |
| 2022-05-04 | 26630192.00 | 13.0 ppt |
| 2022-05-04 | 26630216.00 | ND |
| 2022-05-04 | 26630228.00 | ND |
| 2022-05-23 | 26630893.00 | 6.70 ppt |
| 2022-05-23 | 26630929.00 | 16.0 ppt |
| 2022-05-23 | 26630941.00 | 6.70 ppt |
| 2022-05-23 | 26630881.00 | 13.0 ppt |
| 2022-05-23 | 26630905.00 | ND |
| 2022-05-23 | 26630917.00 | ND |
| 2022-06-01 | 26825182.00 | 6.00 ppt |
| 2022-06-01 | 26825230.00 | 6.70 ppt |
| 2022-06-01 | 26825194.00 | ND |
| 2022-06-01 | 26825206.00 | ND |
| 2022-06-14 | 26825254.00 | 6.10 ppt |
| 2022-06-14 | 26825290.00 | 15.0 ppt |
| 2022-06-14 | 26825302.00 | 6.90 ppt |
| 2022-06-14 | 26825242.00 | 12.0 ppt |
| 2022-06-14 | 26825266.00 | ND |
| 2022-06-14 | 26825278.00 | ND |
| 2022-07-08 | 27019748.00 | 7.50 ppt |
| 2022-07-08 | 27019784.00 | 16.0 ppt |
| 2022-07-08 | 27019796.00 | 7.60 ppt |
| 2022-07-08 | 27019736.00 | 12.0 ppt |
| 2022-07-08 | 27019760.00 | ND |
| 2022-07-08 | 27019772.00 | ND |
| 2022-07-25 | 27214891.00 | 8.20 ppt |
| 2022-07-25 | 27214927.00 | 17.0 ppt |
| 2022-07-25 | 27214939.00 | 7.70 ppt |
| 2022-07-25 | 27214879.00 | 15.0 ppt |
| 2022-07-25 | 27214903.00 | ND |
| 2022-07-25 | 27214915.00 | ND |
| 2022-08-03 | 27214963.00 | 6.30 ppt |
| 2022-08-03 | 27214999.00 | 12.0 ppt |
| 2022-08-03 | 27215011.00 | 7.10 ppt |
| 2022-08-03 | 27214951.00 | 13.0 ppt |
| 2022-08-03 | 27214975.00 | ND |
| 2022-08-03 | 27214987.00 | ND |
| 2022-08-17 | 27215673.00 | 9.30 ppt |
| 2022-08-17 | 27215709.00 | 15.0 ppt |
| 2022-08-17 | 27215721.00 | 9.50 ppt |
| 2022-08-17 | 27215661.00 | 17.0 ppt |
| 2022-08-17 | 27215685.00 | ND |
| 2022-08-17 | 27215697.00 | ND |
| 2022-09-07 | 27421578.00 | 9.00 ppt |
| 2022-09-07 | 27421614.00 | 13.0 ppt |
| 2022-09-07 | 27421626.00 | 8.70 ppt |
| 2022-09-07 | 27421566.00 | 17.0 ppt |
| 2022-09-07 | 27421590.00 | ND |
| 2022-09-07 | 27421602.00 | ND |
| 2022-09-21 | 27422328.00 | 9.20 ppt |
| 2022-09-21 | 27422364.00 | 13.0 ppt |
| 2022-09-21 | 27422376.00 | 9.80 ppt |
| 2022-09-21 | 27422316.00 | 20.0 ppt |
| 2022-09-21 | 27422340.00 | ND |
| 2022-09-21 | 27422352.00 | ND |
| 2022-10-05 | 27624777.00 | 12.0 ppt |
| 2022-10-05 | 27624789.00 | 9.20 ppt |
| 2022-10-05 | 27624801.00 | 8.80 ppt |
| 2022-10-05 | 27624741.00 | 17.0 ppt |
| 2022-10-05 | 27624753.00 | ND |
| 2022-10-05 | 27624765.00 | ND |
| 2022-10-19 | 27625346.00 | 15.0 ppt |
| 2022-10-19 | 27625358.00 | ND |
| 2022-10-19 | 27625370.00 | ND |
| 2022-10-19 | 27625310.00 | 15.0 ppt |
| 2022-10-19 | 27625322.00 | ND |
| 2022-10-19 | 27625334.00 | ND |
| 2022-11-02 | 27806466.00 | ND |
| 2022-11-02 | 27806502.00 | 15.0 ppt |
| 2022-11-02 | 27806514.00 | ND |
| 2022-11-02 | 27806454.00 | 14.0 ppt |
| 2022-11-02 | 27806478.00 | ND |
| 2022-11-02 | 27806490.00 | ND |
| 2022-11-16 | 27807159.00 | ND |
| 2022-11-16 | 27807195.00 | 19.0 ppt |
| 2022-11-16 | 27807207.00 | ND |
| 2022-11-16 | 27807147.00 | 19.0 ppt |
| 2022-11-16 | 27807171.00 | ND |
| 2022-11-16 | 27807183.00 | ND |
| 2022-12-07 | 27982263.00 | ND |
| 2022-12-07 | 27982299.00 | 17.0 ppt |
| 2022-12-07 | 27982311.00 | ND |
| 2022-12-07 | 27982251.00 | 15.0 ppt |
| 2022-12-07 | 27982275.00 | ND |
| 2022-12-07 | 27982287.00 | ND |
| 2022-12-21 | 27982335.00 | ND |
| 2022-12-21 | 27982371.00 | 17.0 ppt |
| 2022-12-21 | 27982383.00 | ND |
| 2022-12-21 | 27982323.00 | 15.0 ppt |
| 2022-12-21 | 27982347.00 | ND |
| 2022-12-21 | 27982359.00 | ND |
| 2023-01-04 | 28155436.00 | ND |
| 2023-01-04 | 28155472.00 | 16.0 ppt |
| 2023-01-04 | 28155484.00 | ND |
| 2023-01-04 | 28155424.00 | 13.0 ppt |
| 2023-01-04 | 28155448.00 | ND |
| 2023-01-04 | 28155460.00 | ND |
| 2023-01-18 | 28156004.00 | ND |
| 2023-01-18 | 28156040.00 | 17.0 ppt |
| 2023-01-18 | 28156052.00 | ND |
| 2023-01-18 | 28155992.00 | 14.0 ppt |
| 2023-01-18 | 28156016.00 | ND |
| 2023-01-18 | 28156028.00 | ND |
| 2023-02-01 | 28332864.00 | ND |
| 2023-02-01 | 28332900.00 | 16.0 ppt |
| 2023-02-01 | 28332912.00 | ND |
| 2023-02-01 | 28332852.00 | 12.0 ppt |
| 2023-02-01 | 28332876.00 | ND |
| 2023-02-01 | 28332888.00 | ND |
| 2023-02-14 | 28504142.00 | ND |
| 2023-02-14 | 28504178.00 | 14.0 ppt |
| 2023-02-14 | 28504190.00 | ND |
| 2023-02-14 | 28504130.00 | 13.0 ppt |
| 2023-02-14 | 28504154.00 | ND |
| 2023-02-14 | 28504166.00 | ND |
| 2023-03-01 | 28504843.00 | ND |
| 2023-03-01 | 28504879.00 | 16.0 ppt |
| 2023-03-01 | 28504891.00 | ND |
| 2023-03-01 | 28504831.00 | 13.0 ppt |
| 2023-03-01 | 28504855.00 | ND |
| 2023-03-01 | 28504867.00 | ND |
| 2023-03-15 | 28683098.00 | ND |
| 2023-03-15 | 28683134.00 | 16.0 ppt |
| 2023-03-15 | 28683146.00 | ND |
| 2023-03-15 | 28683086.00 | 12.0 ppt |
| 2023-03-15 | 28683110.00 | ND |
| 2023-03-15 | 28683122.00 | ND |
| 2023-04-04 | 28683170.00 | ND |
| 2023-04-04 | 28683206.00 | ND |
| 2023-04-04 | 28683218.00 | ND |
| 2023-04-04 | 28683158.00 | 11.0 ppt |
| 2023-04-04 | 28683182.00 | ND |
| 2023-04-04 | 28683194.00 | ND |
| 2023-04-19 | 28880668.00 | ND |
| 2023-04-19 | 28880716.00 | ND |
| 2023-04-19 | 28880680.00 | ND |
| 2023-04-19 | 28880692.00 | ND |
| 2023-04-28 | 28880728.00 | 16.0 ppt |
| 2023-05-03 | 28881406.00 | ND |
| 2023-05-03 | 28881442.00 | 17.0 ppt |
| 2023-05-03 | 28881454.00 | ND |
| 2023-05-03 | 28881394.00 | 13.0 ppt |
| 2023-05-03 | 28881418.00 | ND |
| 2023-05-03 | 28881430.00 | ND |
| 2023-05-17 | 29089390.00 | ND |
| 2023-05-17 | 29089414.00 | ND |
| 2023-06-07 | 29090059.00 | ND |
| 2023-06-07 | 29090083.00 | ND |
| 2023-06-21 | 29090118.00 | ND |
| 2023-06-21 | 29090119.00 | ND |
| 2023-07-05 | 29284777.00 | ND |
| 2023-07-05 | 29284779.00 | ND |
| 2023-07-19 | 29284670.00 | ND |
| 2023-07-19 | 29284669.00 | ND |
| 2023-08-02 | 29476854.00 | ND |
| 2023-08-16 | 29476855.00 | ND |
| 2023-08-16 | 29476852.00 | ND |
| 2023-08-23 | 29477572.00 | ND |
| 2023-09-06 | 29682805.00 | ND |
| 2023-09-14 | 29682856.00 | ND |
| 2023-09-20 | 29683388.00 | ND |
| 2023-09-20 | 29683439.00 | ND |
| 2023-10-04 | 29869360.00 | ND |
| 2023-10-04 | 29869409.00 | ND |
| 2023-10-18 | 29869520.00 | ND |
| 2023-10-18 | 29869466.00 | ND |
| 2023-10-31 | 3J05163-01 | ND |
| 2023-11-01 | 30053605.00 | ND |
| 2023-11-01 | 30053551.00 | ND |
| 2023-11-02 | 3J04715-01 | ND |
| 2023-11-15 | 30053713.00 | ND |
| 2023-11-15 | 30053659.00 | ND |
| 2023-12-06 | 30229366.00 | ND |
| 2023-12-06 | 30229312.00 | ND |
| 2023-12-18 | 30229571.00 | ND |
| 2023-12-18 | 30229517.00 | ND |
| 2024-02-07 | 4B00747-01 | ND |