Know Your Environment. Protect Your Health.

Hexachlorocyclopentadiene

Friona Municipal Water System

Hexachlorocyclopentadiene was historically used for the manufacture of currently banned pesticides, such as endrin, dieldrin and chlordane. It’s still used for production of flame retardants, resins and plastics.

 

14

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND30ND
2019ND30ND
2020ND20ND
2021ND30ND
2022ND20ND
2023ND10ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 2 ppb

The EWG Health Guideline of 2 ppb for hexachlorocyclopentadiene was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against harm to the stomach and intestines.

EPA Maximum Contaminant
Level (MCL): 50 ppb

The legal limit for hexachlorocyclopentadiene, established in 1992, was based on a toxicity study in laboratory animals conducted in the 1980s.

ppb = parts per billion

All test results

Date Lab ID Result
2018-01-16Q1801773006ND
2018-01-16Q1801773007ND
2018-07-30Q1830046005ND
2019-01-17Q1902751005ND
2019-01-17Q1902751006ND
2019-04-23Q1916176005ND
2020-01-15Q2001626009ND
2020-01-15Q2001626010ND
2021-01-13Q2100884001ND
2021-01-13Q2100884006ND
2021-04-08Q2109054003ND
2022-01-11Q2200809002ND
2022-07-12Q2219520003ND
2023-02-16Q2306631006ND