Know Your Environment. Protect Your Health.

Hexafluoropropylene oxide dimer acid (HFPO-DA)

Halifax Water Department

NOTE: Halifax Water Department purchases water from Brockton Water Commission which is required to test for hexafluoropropylene oxide dimer acid (hfpo-da). Sample information shown below was taken by Brockton Water Commission.

Hexafluoropropylene oxide dimer acid (HFPO-DA) is a member of a group of perfluorinated chemicals used in many consumer products. HFPO-DA 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.

 

23

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
2019N/A00N/A
2020ND70ND
2021ND60ND
2022ND180ND
2023ND60ND
2024ND60ND

ppt = parts per trillion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 9 ppt

The EWG Health Guideline of 9 ppt for HFPO-DA was based on the EPA's Human Health toxicity value.This health guideline protects against harm to the liver.

EPA Maximum Contaminant
Level (MCL): 10 ppt

ppt = parts per trillion

All test results

NOTE: Halifax Water Department purchases water from Brockton Water Commission which is required to test for hexafluoropropylene oxide dimer acid (hfpo-da). Sample information shown below was taken by Brockton Water Commission.

Date Result
2020-08-19ND
2020-08-19ND
2020-11-18ND
2020-11-18ND
2020-11-18ND
2020-11-18ND
2020-11-18ND
2021-01-12ND
2021-04-13ND
2021-05-04ND
2021-05-04ND
2021-05-25ND
2021-05-25ND
2021-06-01ND
2021-06-01ND
2021-07-13ND
2022-10-05ND
2022-10-05ND
2023-03-07ND
2023-06-14ND
2023-09-13ND
2023-10-05ND
2023-12-06ND