Know Your Environment. Protect Your Health.

Perfluorooctanoic acid (PFOA)

Ayer Road Properties LLC

Perfluorooctanoic acid (PFOA) is a member of a group of perfluorinated chemicals used in many consumer products. PFOA and other 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.

 

57

Samples

0

Samples exceeding legal limit (MCL)

51

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20188.33 ppt118.33 ppt
201932.9 ppt3329.8 ppt - 35.0 ppt
202010.5 ppt75ND - 23.6 ppt
20217.91 ppt16160.845 ppt - 32.1 ppt
202217.6 ppt1512ND - 60.1 ppt
20238.54 ppt1514ND - 22.8 ppt

ppt = parts per trillion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.09 ppt

The EWG Health Guideline of 0.09 ppt for PFOA was was defined by EPA's final toxicity value from the Office of Water’s Final Human Health Toxicity Assessment. This health guideline protects againat cardiovascular harm and harm to fetal growth.

EPA Maximum Contaminant
Level (MCL): 4 ppt

ppt = parts per trillion

All test results

Date Result
2018-08-228.33 ppt
2019-05-0334.0 ppt
2019-05-0329.8 ppt
2019-05-3035.0 ppt
2020-01-02ND
2020-05-0511.8 ppt
2020-05-053.25 ppt
2020-05-0523.6 ppt
2020-05-0520.8 ppt
2020-05-05ND
2020-05-0514.0 ppt
2021-01-124.14 ppt
2021-01-120.845 ppt
2021-01-129.78 ppt
2021-04-251.000 ppt
2021-04-258.09 ppt
2021-04-259.65 ppt
2021-04-256.36 ppt
2021-04-254.03 ppt
2021-04-2511.0 ppt
2021-04-251.000 ppt
2021-07-2613.3 ppt
2021-07-266.29 ppt
2021-07-261.94 ppt
2021-10-254.22 ppt
2021-10-2512.8 ppt
2021-10-2532.1 ppt
2022-01-305.36 ppt
2022-01-3015.9 ppt
2022-01-3031.5 ppt
2022-04-1031.1 ppt
2022-04-10ND
2022-04-100.982 ppt
2022-04-1039.0 ppt
2022-04-1340.3 ppt
2022-04-1360.1 ppt
2022-07-11ND
2022-07-1126.8 ppt
2022-07-111.11 ppt
2022-10-031.09 ppt
2022-10-0311.5 ppt
2022-10-03ND
2023-01-162.41 ppt
2023-01-168.77 ppt
2023-01-16ND
2023-04-107.53 ppt
2023-04-1013.5 ppt
2023-04-100.933 ppt
2023-04-1014.4 ppt
2023-04-105.67 ppt
2023-04-1012.9 ppt
2023-07-172.47 ppt
2023-07-1720.3 ppt
2023-08-2810.00 ppt
2023-10-091.21 ppt
2023-10-0922.8 ppt
2023-11-155.22 ppt