Know Your Environment. Protect Your Health.

Perfluoroheptanoic acid (PFHPA)

Littleton Water Department

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.

 

163

Samples

0

Samples exceeding legal limit (MCL)

128

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
2018N/A00N/A
20192.28 ppt1812ND - 5.83 ppt
20202.14 ppt18180.774 ppt - 3.55 ppt
20212.29 ppt38380.980 ppt - 4.94 ppt
20222.19 ppt5143ND - 5.42 ppt
20231.92 ppt3732ND - 4.38 ppt
2024ND10ND

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
2019-06-195.19 ppt
2019-06-195.83 ppt
2019-06-195.19 ppt
2019-08-06ND
2019-08-06ND
2019-08-062.12 ppt
2019-08-06ND
2019-08-06ND
2019-08-062.12 ppt
2019-08-06ND
2019-08-06ND
2019-09-233.75 ppt
2019-09-233.72 ppt
2019-09-233.75 ppt
2019-11-183.90 ppt
2019-12-090.680 ppt
2019-12-094.10 ppt
2019-12-090.680 ppt
2020-07-281.20 ppt
2020-07-283.30 ppt
2020-07-282.10 ppt
2020-10-151.56 ppt
2020-10-151.35 ppt
2020-10-153.20 ppt
2020-10-151.49 ppt
2020-10-151.28 ppt
2020-10-150.774 ppt
2020-10-153.19 ppt
2020-10-151.86 ppt
2020-11-042.39 ppt
2020-11-042.39 ppt
2020-11-041.66 ppt
2020-11-043.49 ppt
2020-12-023.55 ppt
2020-12-022.22 ppt
2020-12-021.51 ppt
2021-01-123.42 ppt
2021-01-121.27 ppt
2021-01-122.11 ppt
2021-02-084.20 ppt
2021-02-081.08 ppt
2021-02-082.47 ppt
2021-03-173.87 ppt
2021-03-171.45 ppt
2021-03-171.45 ppt
2021-03-171.73 ppt
2021-03-171.73 ppt
2021-04-052.25 ppt
2021-04-053.16 ppt
2021-04-051.58 ppt
2021-05-122.44 ppt
2021-05-121.11 ppt
2021-05-121.83 ppt
2021-06-082.06 ppt
2021-06-081.32 ppt
2021-06-082.66 ppt
2021-07-211.89 ppt
2021-07-211.30 ppt
2021-07-212.71 ppt
2021-09-083.90 ppt
2021-09-082.78 ppt
2021-09-081.41 ppt
2021-10-063.88 ppt
2021-10-062.83 ppt
2021-10-061.55 ppt
2021-10-134.94 ppt
2021-10-211.03 ppt
2021-10-281.37 ppt
2021-11-152.61 ppt
2021-11-151.29 ppt
2021-11-154.18 ppt
2021-12-140.980 ppt
2021-12-143.25 ppt
2021-12-142.00 ppt
2022-01-112.60 ppt
2022-01-114.05 ppt
2022-01-111.37 ppt
2022-01-18ND
2022-02-16ND
2022-02-163.89 ppt
2022-02-162.71 ppt
2022-03-164.68 ppt
2022-03-163.02 ppt
2022-03-16ND
2022-04-205.42 ppt
2022-04-205.40 ppt
2022-04-25ND
2022-04-271.33 ppt
2022-05-164.48 ppt
2022-05-162.98 ppt
2022-05-180.847 ppt
2022-05-180.635 ppt
2022-05-18ND
2022-06-222.32 ppt
2022-06-222.06 ppt
2022-06-221.16 ppt
2022-06-220.962 ppt
2022-07-131.49 ppt
2022-07-130.641 ppt
2022-07-132.47 ppt
2022-07-133.46 ppt
2022-07-132.18 ppt
2022-07-131.13 ppt
2022-08-031.29 ppt
2022-08-030.874 ppt
2022-08-033.57 ppt
2022-08-032.49 ppt
2022-09-264.22 ppt
2022-09-263.40 ppt
2022-09-27ND
2022-09-27ND
2022-10-194.67 ppt
2022-10-192.02 ppt
2022-10-193.04 ppt
2022-10-270.862 ppt
2022-10-27ND
2022-10-270.863 ppt
2022-11-072.77 ppt
2022-11-073.70 ppt
2022-11-091.31 ppt
2022-11-093.46 ppt
2022-12-202.90 ppt
2022-12-202.94 ppt
2022-12-204.13 ppt
2022-12-202.03 ppt
2023-01-034.38 ppt
2023-01-032.89 ppt
2023-01-24ND
2023-01-240.685 ppt
2023-01-241.24 ppt
2023-01-24ND
2023-02-011.37 ppt
2023-02-012.53 ppt
2023-03-070.844 ppt
2023-03-071.31 ppt
2023-04-180.936 ppt
2023-04-181.16 ppt
2023-04-181.55 ppt
2023-04-181.03 ppt
2023-05-172.76 ppt
2023-05-174.14 ppt
2023-05-171.04 ppt
2023-06-162.15 ppt
2023-06-161.24 ppt
2023-07-25ND
2023-07-25ND
2023-07-253.69 ppt
2023-07-25ND
2023-07-251.41 ppt
2023-07-252.50 ppt
2023-08-213.61 ppt
2023-08-211.29 ppt
2023-09-193.38 ppt
2023-09-193.12 ppt
2023-10-031.47 ppt
2023-10-034.20 ppt
2023-10-032.92 ppt
2023-10-122.88 ppt
2023-11-283.00 ppt
2023-11-284.20 ppt
2023-11-281.32 ppt
2023-12-190.696 ppt
2024-07-17ND