Know Your Environment. Protect Your Health.

Hexachlorocyclopentadiene

Meridian Water Department

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.

 

146

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND190ND
2019ND200ND
2020ND150ND
2021ND80ND
2022ND320ND
2023ND520ND

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
2018-01-30S1804235ND
2018-04-10S201804120311ND
2018-05-08S201805100879ND
2018-05-08S201805100873ND
2018-05-08S201805100870ND
2018-05-08S201805100876ND
2018-05-08S201805100878ND
2018-05-08S201805100872ND
2018-05-08S201805100877ND
2018-05-09S201805100996ND
2018-05-09S201805100997ND
2018-07-09S201807111095ND
2018-07-09S201807111096ND
2018-10-29S201810300481ND
2018-11-05S201811060665ND
2018-11-26201811270590ND
2018-11-26201811270594ND
2018-11-26S201811270594ND
2018-11-26S201811270590ND
2019-01-28S201901290168ND
2019-02-06S201902070845ND
2019-03-04S201903050292ND
2019-04-09201904100430AND
2019-04-09201904100102AND
2019-05-09S201905100171ND
2019-05-09201907160181ND
2019-05-28201905290111ND
2019-06-06S201907160184ND
2019-06-06201907160184ND
2019-06-17201906180390ND
2019-06-17201906180256ND
2019-06-17S201906180256ND
2019-06-17S201906180390ND
2019-06-18201906190426ND
2019-08-27201908280395ND
2019-09-12201909130158ND
2019-09-18201909190329ND
2019-12-10S201912110681ND
2019-12-16201912170166ND
2020-03-10202003110242ND
2020-03-17202003180341ND
2020-03-17202003180445ND
2020-03-18202003190169ND
2020-04-07202004080530ND
2020-04-07202004080558ND
2020-04-14202004150455ND
2020-04-14202004160513ND
2020-06-04202006050260ND
2020-11-18202011190532ND
2020-11-18202011190533ND
2020-11-23202011240344ND
2020-11-23202011240342ND
2020-11-24202011250284ND
2020-12-02202012030482ND
2021-01-20202101210278ND
2021-01-26S4827998ND
2021-01-26S4827999ND
2021-01-26S4827997ND
2021-01-26S4828000ND
2021-07-21202107220276ND
2021-09-28202109290491ND
2021-11-16202111170684ND
2022-02-15202202170046ND
2022-02-15202202170047ND
2022-02-15202202160929ND
2022-02-15202202160930ND
2022-02-22202202231260ND
2022-02-22202202231261ND
2022-02-22202202231263ND
2022-02-22202202231264ND
2022-02-28202203030667ND
2022-02-28202203030668ND
2022-03-01202203020993ND
2022-03-07810-17975-1ND
2022-03-07810-17975-2ND
2022-03-07810-17977-2ND
2022-03-07810-18011-1ND
2022-03-07810-18013-1ND
2022-03-07810-18013-2ND
2022-03-08810-18017-1ND
2022-03-30202203310239ND
2022-03-30202203310240ND
2022-04-12202204140057ND
2022-04-12202204140646ND
2022-04-12202204130784ND
2022-05-10380-1913-2ND
2022-08-02380-14561-1ND
2022-11-15380-28431-1ND
2022-11-16380-28629-1ND
2022-11-16380-28732-1ND
2022-12-19380-31949-1ND
2022-12-19380-31896-1ND
2022-12-19380-31915-1ND
2022-12-20380-32187-1ND
2023-01-11380-34262-2ND
2023-06-05380-49974-4ND
2023-08-01380-57235-1ND
2023-08-02380-57434-1ND
2023-08-02380-57496-1ND
2023-08-02380-57460-1ND
2023-08-02380-57439-1ND
2023-08-02380-57437-1ND
2023-08-02380-57464-1ND
2023-08-02380-57431-1AAND
2023-08-07380-57977-1ND
2023-08-07380-57957-1ND
2023-08-07380-57974-1ND
2023-08-07380-57897-1ND
2023-08-07380-57894-1ND
2023-08-07380-57899-1ND
2023-08-09380-58781-1ND
2023-08-09380-58781-2ND
2023-08-09380-58355-1ND
2023-08-09380-58481-1ND
2023-08-09380-58496-1ND
2023-08-10380-58742-1ND
2023-08-10380-58749-1ND
2023-08-10380-58702-1ND
2023-08-14380-59170-1ND
2023-08-14380-59170-2ND
2023-08-14380-59113-1ND
2023-08-14380-59113-2ND
2023-08-14380-59090-1ND
2023-08-14380-59090-2ND
2023-08-15380-59356-1ND
2023-08-15380-59356-2ND
2023-08-15380-59374-1ND
2023-08-15380-59374-2ND
2023-08-15380-59367-1ND
2023-08-15380-59367-2ND
2023-08-15380-59371-1ND
2023-08-15380-59371-2ND
2023-08-16380-59628-1ND
2023-08-17380-59772-1ND
2023-08-17380-59772-2ND
2023-08-17380-59765-1ND
2023-08-17380-59765-2ND
2023-08-17380-59763-1ND
2023-09-05380-61825-3ND
2023-09-26380-64488-1ND
2023-09-26380-64427-1ND
2023-09-27380-64758-1ND
2023-09-27380-64758-2ND
2023-10-03380-65599-4ND
2023-11-14380-71156-1ND
2023-11-14380-71138-1ND