Know Your Environment. Protect Your Health.

Hexachlorocyclopentadiene

City Of Glen Rose

NOTE: City Of Glen Rose purchases water from Somervell County Water District - Wheele which is required to test for hexachlorocyclopentadiene. Sample information shown below was taken by Somervell County Water District - Wheele.

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.

 

6

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND40ND
2019ND20ND
2020ND40ND
2021ND70ND
2022ND80ND
2023ND80ND

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

NOTE: City Of Glen Rose purchases water from Somervell County Water District - Wheele which is required to test for hexachlorocyclopentadiene. Sample information shown below was taken by Somervell County Water District - Wheele.

Date Lab ID Result
2018-04-26Q1817130001ND
2019-02-13Q1906633003ND
2020-11-03Q2042995005ND
2021-06-01Q2114024001ND
2022-02-22Q2206240001ND
2023-10-11Q2343452003ND