Know Your Environment. Protect Your Health.

Hexachlorocyclopentadiene

Woodlake, City Of

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.

 

34

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND120ND
2019ND40ND
2020ND10ND
2021ND10ND
2022ND20ND
2023ND140ND

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
2018-06-28CA5410020_006_006-201806281320ND
2018-06-28CA5410020_007_007-201806281313ND
2018-06-28CA5410020_010_010-201806281355ND
2018-06-28CA5410020_004_004-201806281258ND
2018-06-28CA5410020_009_009-201806281344ND
2018-06-28CA5410020_005_005-201806281240ND
2018-09-20CA5410020_009_009-201809201154ND
2018-09-20CA5410020_010_010-201809201140ND
2018-09-20CA5410020_005_005-201809201240ND
2018-09-20CA5410020_004_004-201809201250ND
2018-12-28CA5410020_010_010-201812281235ND
2018-12-28CA5410020_009_009-201812281305ND
2019-05-07CA5410020_009_009-201905071340ND
2019-05-07CA5410020_010_010-201905071315ND
2019-11-26CA5410020_009_009-201911261340ND
2019-11-26CA5410020_010_010-201911261325ND
2020-09-15CA5410020_010_010-202009151144ND
2021-08-31CA5410020_005_005-202108311010ND
2022-09-22CA5410020_009_009-202209221328ND
2022-09-27CA5410020_008_008-202209271225ND
2023-03-27CA5410020_007_007-202303271255ND
2023-03-27CA5410020_009_009-202303271145ND
2023-03-27CA5410020_006_006-202303271240ND
2023-03-27CA5410020_004_004-202303271340ND
2023-03-27CA5410020_008_008-202303271210ND
2023-03-27CA5410020_010_010-202303271130ND
2023-03-27CA5410020_005_005-202303271310ND
2023-06-05CA5410020_010_010-202306051135ND
2023-06-05CA5410020_006_006-202306051250ND
2023-06-05CA5410020_007_007-202306051310ND
2023-06-05CA5410020_009_009-202306051145ND
2023-06-05CA5410020_008_008-202306051220ND
2023-06-08CA5410020_005_005-202306081325ND
2023-06-08CA5410020_004_004-202306081315ND