Know Your Environment. Protect Your Health.

Perfluoroheptanoic acid (PFHPA)

Ayer DPW Water Division

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.

 

312

Samples

0

Samples exceeding legal limit (MCL)

241

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
201811.9 ppt4338ND - 59.4 ppt
201919.7 ppt5242ND - 94.3 ppt
202014.4 ppt3029ND - 106.0 ppt
202114.4 ppt6459ND - 114.0 ppt
20229.82 ppt4938ND - 116.0 ppt
20234.78 ppt7449ND - 109.0 ppt
2024N/A00N/A

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 Result
2018-01-0914.0 ppt
2018-01-098.00 ppt
2018-01-0920.0 ppt
2018-01-092.00 ppt
2018-01-0918.0 ppt
2018-01-0948.0 ppt
2018-01-0920.0 ppt
2018-01-0920.0 ppt
2018-01-098.00 ppt
2018-01-0914.0 ppt
2018-02-082.00 ppt
2018-02-12ND
2018-03-01ND
2018-03-017.00 ppt
2018-03-015.00 ppt
2018-03-074.00 ppt
2018-03-074.00 ppt
2018-04-234.00 ppt
2018-04-236.00 ppt
2018-04-23ND
2018-04-23ND
2018-04-23ND
2018-04-2310.00 ppt
2018-04-237.00 ppt
2018-04-234.00 ppt
2018-04-236.00 ppt
2018-08-247.93 ppt
2018-08-247.65 ppt
2018-08-242.32 ppt
2018-08-242.33 ppt
2018-08-247.33 ppt
2018-08-2452.5 ppt
2018-08-2412.9 ppt
2018-08-247.93 ppt
2018-08-247.65 ppt
2018-10-2521.6 ppt
2018-10-252.68 ppt
2018-10-253.22 ppt
2018-10-2537.7 ppt
2018-10-2559.4 ppt
2018-10-2516.5 ppt
2018-10-259.92 ppt
2018-10-2521.6 ppt
2019-02-207.93 ppt
2019-02-2015.3 ppt
2019-02-202.12 ppt
2019-02-202.22 ppt
2019-02-202.42 ppt
2019-02-202.52 ppt
2019-02-202.71 ppt
2019-02-2027.0 ppt
2019-02-2094.3 ppt
2019-02-2012.3 ppt
2019-02-207.93 ppt
2019-02-2015.3 ppt
2019-05-2117.4 ppt
2019-05-2169.5 ppt
2019-05-2117.4 ppt
2019-06-2720.1 ppt
2019-06-2711.3 ppt
2019-07-03ND
2019-07-03ND
2019-07-0381.2 ppt
2019-08-0278.8 ppt
2019-08-02ND
2019-08-02ND
2019-08-205.17 ppt
2019-08-2017.3 ppt
2019-08-203.31 ppt
2019-08-201.94 ppt
2019-08-2039.6 ppt
2019-08-2071.3 ppt
2019-08-209.14 ppt
2019-08-2017.3 ppt
2019-08-205.17 ppt
2019-09-0369.4 ppt
2019-09-03ND
2019-09-03ND
2019-09-03ND
2019-10-0380.6 ppt
2019-10-03ND
2019-10-03ND
2019-10-03ND
2019-11-115.50 ppt
2019-11-115.50 ppt
2019-11-186.19 ppt
2019-11-181.96 ppt
2019-11-186.19 ppt
2019-11-2210.6 ppt
2019-11-2243.7 ppt
2019-11-2289.9 ppt
2019-12-1014.0 ppt
2019-12-1010.00 ppt
2019-12-1010.00 ppt
2019-12-1014.0 ppt
2020-02-132.94 ppt
2020-02-132.27 ppt
2020-02-134.07 ppt
2020-02-131.61 ppt
2020-02-138.54 ppt
2020-02-135.58 ppt
2020-02-1381.7 ppt
2020-02-135.63 ppt
2020-02-138.49 ppt
2020-06-0981.9 ppt
2020-06-091.05 ppt
2020-06-097.13 ppt
2020-06-091.44 ppt
2020-06-094.35 ppt
2020-06-093.15 ppt
2020-06-092.16 ppt
2020-06-0914.0 ppt
2020-06-0933.2 ppt
2020-09-021.99 ppt
2020-09-025.58 ppt
2020-09-029.88 ppt
2020-12-036.64 ppt
2020-12-034.09 ppt
2020-12-032.69 ppt
2020-12-03106.0 ppt
2020-12-036.52 ppt
2020-12-0311.3 ppt
2020-12-034.63 ppt
2020-12-03ND
2020-12-034.58 ppt
2021-01-088.00 ppt
2021-01-08ND
2021-01-082.54 ppt
2021-01-08ND
2021-01-084.22 ppt
2021-01-0877.6 ppt
2021-01-083.82 ppt
2021-01-08ND
2021-01-088.02 ppt
2021-01-0812.8 ppt
2021-01-0854.0 ppt
2021-02-223.74 ppt
2021-02-228.07 ppt
2021-02-228.79 ppt
2021-02-22ND
2021-02-227.33 ppt
2021-03-240.453 ppt
2021-03-2462.6 ppt
2021-03-248.00 ppt
2021-04-2813.9 ppt
2021-04-286.86 ppt
2021-04-280.969 ppt
2021-05-180.695 ppt
2021-05-18ND
2021-05-187.91 ppt
2021-05-1862.8 ppt
2021-06-09114.0 ppt
2021-06-09114.0 ppt
2021-06-094.21 ppt
2021-06-093.46 ppt
2021-06-096.47 ppt
2021-06-096.47 ppt
2021-06-094.21 ppt
2021-06-093.46 ppt
2021-06-101.74 ppt
2021-06-108.31 ppt
2021-06-100.967 ppt
2021-06-1064.7 ppt
2021-06-103.51 ppt
2021-06-101.31 ppt
2021-07-211.14 ppt
2021-07-212.08 ppt
2021-07-217.54 ppt
2021-07-2150.9 ppt
2021-08-1957.1 ppt
2021-08-192.97 ppt
2021-08-196.68 ppt
2021-08-190.849 ppt
2021-08-1912.1 ppt
2021-09-246.42 ppt
2021-09-243.43 ppt
2021-09-241.60 ppt
2021-10-146.44 ppt
2021-10-141.27 ppt
2021-10-143.46 ppt
2021-11-125.58 ppt
2021-11-124.20 ppt
2021-11-120.854 ppt
2021-12-0227.0 ppt
2021-12-025.56 ppt
2021-12-024.71 ppt
2021-12-100.598 ppt
2021-12-104.27 ppt
2021-12-101.93 ppt
2022-01-040.920 ppt
2022-01-045.85 ppt
2022-01-044.69 ppt
2022-02-030.707 ppt
2022-02-034.81 ppt
2022-02-036.69 ppt
2022-02-2437.3 ppt
2022-02-2444.4 ppt
2022-02-247.95 ppt
2022-02-2465.9 ppt
2022-03-076.84 ppt
2022-03-071.15 ppt
2022-03-0710.4 ppt
2022-04-2110.2 ppt
2022-04-211.12 ppt
2022-04-215.16 ppt
2022-04-252.67 ppt
2022-04-253.78 ppt
2022-04-25116.0 ppt
2022-05-1311.5 ppt
2022-05-131.24 ppt
2022-05-135.58 ppt
2022-06-094.60 ppt
2022-06-0911.2 ppt
2022-06-091.04 ppt
2022-07-20ND
2022-07-2013.2 ppt
2022-07-201.11 ppt
2022-07-20ND
2022-08-11ND
2022-08-1118.9 ppt
2022-08-111.12 ppt
2022-08-11ND
2022-09-081.37 ppt
2022-09-0821.9 ppt
2022-09-08ND
2022-09-08ND
2022-10-12ND
2022-10-121.09 ppt
2022-10-12ND
2022-10-1222.8 ppt
2022-11-071.75 ppt
2022-11-071.16 ppt
2022-11-07ND
2022-11-0721.3 ppt
2022-12-011.36 ppt
2022-12-012.50 ppt
2022-12-01ND
2022-12-01ND
2023-01-05ND
2023-01-05ND
2023-01-051.84 ppt
2023-01-05ND
2023-02-011.05 ppt
2023-02-01ND
2023-02-012.35 ppt
2023-02-01ND
2023-03-03ND
2023-03-032.41 ppt
2023-03-204.86 ppt
2023-03-201.94 ppt
2023-03-20ND
2023-03-202.35 ppt
2023-03-204.01 ppt
2023-04-1011.5 ppt
2023-04-109.23 ppt
2023-04-101.59 ppt
2023-04-10ND
2023-04-10ND
2023-04-10ND
2023-04-102.70 ppt
2023-04-106.22 ppt
2023-04-10ND
2023-04-102.99 ppt
2023-05-02ND
2023-05-02ND
2023-05-04ND
2023-05-042.84 ppt
2023-05-043.18 ppt
2023-05-04ND
2023-05-083.31 ppt
2023-05-08109.0 ppt
2023-05-083.57 ppt
2023-06-062.76 ppt
2023-06-06ND
2023-06-062.60 ppt
2023-06-06ND
2023-07-14ND
2023-07-14ND
2023-07-141.76 ppt
2023-07-142.30 ppt
2023-08-078.97 ppt
2023-08-072.59 ppt
2023-08-08ND
2023-08-083.36 ppt
2023-08-080.665 ppt
2023-08-083.32 ppt
2023-09-13ND
2023-09-132.88 ppt
2023-09-133.04 ppt
2023-09-133.05 ppt
2023-09-1351.2 ppt
2023-09-138.52 ppt
2023-09-133.01 ppt
2023-09-133.64 ppt
2023-09-132.25 ppt
2023-09-133.90 ppt
2023-09-130.821 ppt
2023-09-1330.7 ppt
2023-10-04ND
2023-10-040.892 ppt
2023-10-043.92 ppt
2023-10-043.15 ppt
2023-11-07ND
2023-11-07ND
2023-11-200.959 ppt
2023-11-20ND
2023-11-209.95 ppt
2023-11-203.34 ppt
2023-12-087.15 ppt
2023-12-080.840 ppt
2023-12-081.55 ppt
2023-12-083.70 ppt