Perfluorohexanoic Acid (PFHxA)
Warminster Municipal Authority
Perfluorohexanoic 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 | N/A | 0 | 0 | N/A |
| 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 | 16.3 ppt | 40 | 21 | ND - 36.0 ppt |
| 2022 | 16.3 ppt | 142 | 92 | ND - 40.0 ppt |
| 2023 | 5.09 ppt | 85 | 25 | ND - 27.0 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 perfluorohexanoic acid was defined by EPA's toxicity value published in the Integrated Risk Information System's toxicological review. This health guideline protects against harm to fetal growth and child development.
ppt = parts per trillion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2021-07-07 | 24811000.00 | ND |
| 2021-07-07 | 24811012.00 | ND |
| 2021-07-07 | 24811036.00 | 29.0 ppt |
| 2021-07-07 | 24811048.00 | 29.0 ppt |
| 2021-07-07 | 24810964.00 | ND |
| 2021-07-07 | 24810976.00 | ND |
| 2021-09-01 | 25202808.00 | 31.0 ppt |
| 2021-09-01 | 25202820.00 | 32.0 ppt |
| 2021-09-01 | 25202772.00 | ND |
| 2021-09-01 | 25202784.00 | ND |
| 2021-09-15 | 25386690.00 | 32.0 ppt |
| 2021-09-15 | 25386738.00 | 29.0 ppt |
| 2021-09-15 | 25386702.00 | ND |
| 2021-09-15 | 25386714.00 | ND |
| 2021-10-12 | 25571155.00 | 32.0 ppt |
| 2021-10-12 | 25571167.00 | 31.0 ppt |
| 2021-10-12 | 25571119.00 | ND |
| 2021-10-12 | 25571131.00 | ND |
| 2021-10-21 | 25387385.00 | 34.0 ppt |
| 2021-10-21 | 25387409.00 | ND |
| 2021-11-03 | 25571191.00 | 31.0 ppt |
| 2021-11-03 | 25571239.00 | 32.0 ppt |
| 2021-11-03 | 25571203.00 | ND |
| 2021-11-03 | 25571215.00 | ND |
| 2021-11-17 | 25571979.00 | 35.0 ppt |
| 2021-11-17 | 25572015.00 | 30.0 ppt |
| 2021-11-17 | 25572027.00 | 36.0 ppt |
| 2021-11-17 | 25571967.00 | 22.0 ppt |
| 2021-11-17 | 25571991.00 | ND |
| 2021-11-17 | 25572003.00 | ND |
| 2021-12-01 | 25747161.00 | 33.0 ppt |
| 2021-12-01 | 25747209.00 | 32.0 ppt |
| 2021-12-01 | 25747173.00 | ND |
| 2021-12-01 | 25747185.00 | ND |
| 2021-12-14 | 25747338.00 | 36.0 ppt |
| 2021-12-14 | 25747374.00 | 29.0 ppt |
| 2021-12-14 | 25747386.00 | 34.0 ppt |
| 2021-12-14 | 25747326.00 | 23.0 ppt |
| 2021-12-14 | 25747350.00 | ND |
| 2021-12-14 | 25747362.00 | ND |
| 2022-01-05 | 25925292.00 | 33.0 ppt |
| 2022-01-05 | 25925328.00 | 28.0 ppt |
| 2022-01-05 | 25925340.00 | 34.0 ppt |
| 2022-01-05 | 25925280.00 | 21.0 ppt |
| 2022-01-05 | 25925304.00 | ND |
| 2022-01-05 | 25925316.00 | ND |
| 2022-01-19 | 25925956.00 | 36.0 ppt |
| 2022-01-19 | 25925992.00 | 29.0 ppt |
| 2022-01-19 | 25926004.00 | 35.0 ppt |
| 2022-01-19 | 25925944.00 | 21.0 ppt |
| 2022-01-19 | 25925968.00 | ND |
| 2022-01-19 | 25925980.00 | ND |
| 2022-02-02 | 26101416.00 | 32.0 ppt |
| 2022-02-02 | 26101452.00 | 29.0 ppt |
| 2022-02-02 | 26101464.00 | 32.0 ppt |
| 2022-02-02 | 26101404.00 | 22.0 ppt |
| 2022-02-02 | 26101428.00 | ND |
| 2022-02-02 | 26101440.00 | ND |
| 2022-02-16 | 26101936.00 | 35.0 ppt |
| 2022-02-16 | 26101972.00 | 28.0 ppt |
| 2022-02-16 | 26101984.00 | 35.0 ppt |
| 2022-02-16 | 26101924.00 | 19.0 ppt |
| 2022-02-16 | 26101948.00 | ND |
| 2022-02-16 | 26101960.00 | ND |
| 2022-03-02 | 26102148.00 | 38.0 ppt |
| 2022-03-02 | 26102184.00 | 28.0 ppt |
| 2022-03-02 | 26102196.00 | 33.0 ppt |
| 2022-03-02 | 26102136.00 | 18.0 ppt |
| 2022-03-02 | 26102160.00 | ND |
| 2022-03-02 | 26102172.00 | ND |
| 2022-03-15 | 26271115.00 | 32.0 ppt |
| 2022-03-15 | 26271151.00 | 26.0 ppt |
| 2022-03-15 | 26271163.00 | 30.0 ppt |
| 2022-03-15 | 26271103.00 | 16.0 ppt |
| 2022-03-15 | 26271127.00 | ND |
| 2022-03-15 | 26271139.00 | ND |
| 2022-04-06 | 26446020.00 | 30.0 ppt |
| 2022-04-06 | 26446056.00 | 22.0 ppt |
| 2022-04-06 | 26446068.00 | 30.0 ppt |
| 2022-04-06 | 26446008.00 | 13.0 ppt |
| 2022-04-06 | 26446032.00 | ND |
| 2022-04-06 | 26446044.00 | ND |
| 2022-04-19 | 26446673.00 | 36.0 ppt |
| 2022-04-19 | 26446709.00 | 25.0 ppt |
| 2022-04-19 | 26446721.00 | 36.0 ppt |
| 2022-04-19 | 26446661.00 | 14.0 ppt |
| 2022-04-19 | 26446685.00 | ND |
| 2022-04-19 | 26446697.00 | ND |
| 2022-05-04 | 26630206.00 | 38.0 ppt |
| 2022-05-04 | 26630242.00 | 23.0 ppt |
| 2022-05-04 | 26630254.00 | 35.0 ppt |
| 2022-05-04 | 26630194.00 | 17.0 ppt |
| 2022-05-04 | 26630218.00 | ND |
| 2022-05-04 | 26630230.00 | ND |
| 2022-05-23 | 26630895.00 | 40.0 ppt |
| 2022-05-23 | 26630931.00 | 23.0 ppt |
| 2022-05-23 | 26630943.00 | 36.0 ppt |
| 2022-05-23 | 26630883.00 | 17.0 ppt |
| 2022-05-23 | 26630907.00 | ND |
| 2022-05-23 | 26630919.00 | ND |
| 2022-06-01 | 26825184.00 | 32.0 ppt |
| 2022-06-01 | 26825232.00 | 35.0 ppt |
| 2022-06-01 | 26825196.00 | ND |
| 2022-06-01 | 26825208.00 | ND |
| 2022-06-14 | 26825256.00 | 31.0 ppt |
| 2022-06-14 | 26825292.00 | 22.0 ppt |
| 2022-06-14 | 26825304.00 | 33.0 ppt |
| 2022-06-14 | 26825244.00 | 15.0 ppt |
| 2022-06-14 | 26825268.00 | ND |
| 2022-06-14 | 26825280.00 | ND |
| 2022-07-08 | 27019750.00 | 33.0 ppt |
| 2022-07-08 | 27019786.00 | 24.0 ppt |
| 2022-07-08 | 27019798.00 | 34.0 ppt |
| 2022-07-08 | 27019738.00 | 15.0 ppt |
| 2022-07-08 | 27019762.00 | ND |
| 2022-07-08 | 27019774.00 | ND |
| 2022-07-25 | 27214893.00 | 36.0 ppt |
| 2022-07-25 | 27214929.00 | 23.0 ppt |
| 2022-07-25 | 27214941.00 | 34.0 ppt |
| 2022-07-25 | 27214881.00 | 20.0 ppt |
| 2022-07-25 | 27214905.00 | ND |
| 2022-07-25 | 27214917.00 | ND |
| 2022-08-03 | 27214965.00 | 26.0 ppt |
| 2022-08-03 | 27215001.00 | 17.0 ppt |
| 2022-08-03 | 27215013.00 | 28.0 ppt |
| 2022-08-03 | 27214953.00 | 18.0 ppt |
| 2022-08-03 | 27214977.00 | ND |
| 2022-08-03 | 27214989.00 | ND |
| 2022-08-17 | 27215675.00 | 37.0 ppt |
| 2022-08-17 | 27215711.00 | 22.0 ppt |
| 2022-08-17 | 27215723.00 | 33.0 ppt |
| 2022-08-17 | 27215663.00 | 22.0 ppt |
| 2022-08-17 | 27215687.00 | ND |
| 2022-08-17 | 27215699.00 | ND |
| 2022-09-07 | 27421580.00 | 32.0 ppt |
| 2022-09-07 | 27421616.00 | 22.0 ppt |
| 2022-09-07 | 27421628.00 | 32.0 ppt |
| 2022-09-07 | 27421568.00 | 26.0 ppt |
| 2022-09-07 | 27421592.00 | 2.00 ppt |
| 2022-09-07 | 27421604.00 | ND |
| 2022-09-21 | 27422330.00 | 31.0 ppt |
| 2022-09-21 | 27422366.00 | 22.0 ppt |
| 2022-09-21 | 27422378.00 | 34.0 ppt |
| 2022-09-21 | 27422318.00 | 27.0 ppt |
| 2022-09-21 | 27422342.00 | 2.40 ppt |
| 2022-09-21 | 27422354.00 | ND |
| 2022-10-05 | 27624779.00 | 20.0 ppt |
| 2022-10-05 | 27624791.00 | 32.0 ppt |
| 2022-10-05 | 27624803.00 | 31.0 ppt |
| 2022-10-05 | 27624743.00 | 24.0 ppt |
| 2022-10-05 | 27624755.00 | 2.80 ppt |
| 2022-10-05 | 27624767.00 | ND |
| 2022-10-19 | 27625348.00 | 21.0 ppt |
| 2022-10-19 | 27625360.00 | ND |
| 2022-10-19 | 27625372.00 | ND |
| 2022-10-19 | 27625312.00 | 20.0 ppt |
| 2022-10-19 | 27625324.00 | 3.70 ppt |
| 2022-10-19 | 27625336.00 | ND |
| 2022-11-02 | 27806468.00 | ND |
| 2022-11-02 | 27806504.00 | 22.0 ppt |
| 2022-11-02 | 27806516.00 | ND |
| 2022-11-02 | 27806456.00 | 19.0 ppt |
| 2022-11-02 | 27806480.00 | 3.90 ppt |
| 2022-11-02 | 27806492.00 | ND |
| 2022-11-16 | 27807161.00 | ND |
| 2022-11-16 | 27807197.00 | 28.0 ppt |
| 2022-11-16 | 27807209.00 | ND |
| 2022-11-16 | 27807149.00 | 26.0 ppt |
| 2022-11-16 | 27807173.00 | 5.80 ppt |
| 2022-11-16 | 27807185.00 | ND |
| 2022-12-07 | 27982265.00 | ND |
| 2022-12-07 | 27982301.00 | 27.0 ppt |
| 2022-12-07 | 27982313.00 | ND |
| 2022-12-07 | 27982253.00 | 19.0 ppt |
| 2022-12-07 | 27982277.00 | 6.10 ppt |
| 2022-12-07 | 27982289.00 | ND |
| 2022-12-21 | 27982337.00 | ND |
| 2022-12-21 | 27982373.00 | 28.0 ppt |
| 2022-12-21 | 27982385.00 | ND |
| 2022-12-21 | 27982325.00 | 19.0 ppt |
| 2022-12-21 | 27982349.00 | 7.00 ppt |
| 2022-12-21 | 27982361.00 | ND |
| 2023-01-04 | 28155438.00 | ND |
| 2023-01-04 | 28155474.00 | 24.0 ppt |
| 2023-01-04 | 28155486.00 | ND |
| 2023-01-04 | 28155426.00 | 17.0 ppt |
| 2023-01-04 | 28155450.00 | 8.10 ppt |
| 2023-01-04 | 28155462.00 | ND |
| 2023-01-18 | 28156006.00 | ND |
| 2023-01-18 | 28156042.00 | 25.0 ppt |
| 2023-01-18 | 28156054.00 | ND |
| 2023-01-18 | 28155994.00 | 19.0 ppt |
| 2023-01-18 | 28156018.00 | 10.00 ppt |
| 2023-01-18 | 28156030.00 | ND |
| 2023-02-01 | 28332866.00 | ND |
| 2023-02-01 | 28332902.00 | 24.0 ppt |
| 2023-02-01 | 28332914.00 | ND |
| 2023-02-01 | 28332854.00 | 17.0 ppt |
| 2023-02-01 | 28332878.00 | 9.60 ppt |
| 2023-02-01 | 28332890.00 | ND |
| 2023-02-14 | 28504144.00 | ND |
| 2023-02-14 | 28504180.00 | 22.0 ppt |
| 2023-02-14 | 28504192.00 | ND |
| 2023-02-14 | 28504132.00 | 15.0 ppt |
| 2023-02-14 | 28504156.00 | 9.80 ppt |
| 2023-02-14 | 28504168.00 | ND |
| 2023-03-01 | 28504845.00 | ND |
| 2023-03-01 | 28504881.00 | 25.0 ppt |
| 2023-03-01 | 28504893.00 | ND |
| 2023-03-01 | 28504833.00 | 18.0 ppt |
| 2023-03-01 | 28504857.00 | 12.0 ppt |
| 2023-03-01 | 28504869.00 | ND |
| 2023-03-15 | 28683100.00 | ND |
| 2023-03-15 | 28683136.00 | 24.0 ppt |
| 2023-03-15 | 28683148.00 | ND |
| 2023-03-15 | 28683088.00 | 16.0 ppt |
| 2023-03-15 | 28683112.00 | 12.0 ppt |
| 2023-03-15 | 28683124.00 | ND |
| 2023-04-04 | 28683172.00 | ND |
| 2023-04-04 | 28683208.00 | ND |
| 2023-04-04 | 28683220.00 | ND |
| 2023-04-04 | 28683160.00 | 15.0 ppt |
| 2023-04-04 | 28683184.00 | 12.0 ppt |
| 2023-04-04 | 28683196.00 | ND |
| 2023-04-19 | 28880670.00 | ND |
| 2023-04-19 | 28880718.00 | ND |
| 2023-04-19 | 28880682.00 | 13.0 ppt |
| 2023-04-19 | 28880694.00 | ND |
| 2023-04-28 | 28880730.00 | 27.0 ppt |
| 2023-05-03 | 28881408.00 | ND |
| 2023-05-03 | 28881444.00 | 25.0 ppt |
| 2023-05-03 | 28881456.00 | ND |
| 2023-05-03 | 28881396.00 | 18.0 ppt |
| 2023-05-03 | 28881420.00 | 15.0 ppt |
| 2023-05-03 | 28881432.00 | ND |
| 2023-05-17 | 29089392.00 | ND |
| 2023-05-17 | 29089416.00 | ND |
| 2023-06-07 | 29090061.00 | ND |
| 2023-06-07 | 29090085.00 | ND |
| 2023-06-21 | 29090128.00 | ND |
| 2023-06-21 | 29090129.00 | ND |
| 2023-07-05 | 29284819.00 | ND |
| 2023-07-05 | 29284820.00 | ND |
| 2023-07-19 | 29284712.00 | ND |
| 2023-07-19 | 29284711.00 | ND |
| 2023-08-02 | 29476930.00 | ND |
| 2023-08-16 | 29476931.00 | ND |
| 2023-08-16 | 29476929.00 | ND |
| 2023-08-23 | 29477570.00 | ND |
| 2023-09-06 | 29682803.00 | ND |
| 2023-09-14 | 29682854.00 | ND |
| 2023-09-20 | 29683386.00 | ND |
| 2023-09-20 | 29683437.00 | ND |
| 2023-10-04 | 29869358.00 | ND |
| 2023-10-04 | 29869407.00 | ND |
| 2023-10-18 | 29869518.00 | ND |
| 2023-10-18 | 29869464.00 | ND |
| 2023-10-31 | 3J05163-01 | ND |
| 2023-11-01 | 30053603.00 | ND |
| 2023-11-01 | 30053549.00 | ND |
| 2023-11-02 | 3J04715-01 | ND |
| 2023-11-15 | 30053711.00 | ND |
| 2023-11-15 | 30053657.00 | ND |
| 2023-12-06 | 30229364.00 | ND |
| 2023-12-06 | 30229310.00 | ND |
| 2023-12-18 | 30229569.00 | ND |
| 2023-12-18 | 30229515.00 | ND |
| 2024-02-07 | 4B00747-01 | ND |