Know Your Environment. Protect Your Health.

Chloroform

Bellflower Municipal Water System

Chloroform, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Chloroform and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy. Read More.

In addition to tap water disinfection, chloroform pollution in the environment also comes from industrial discharges from pulp and paper mills, and from urban wastewater effluent. Human studies show that chloroform damages the kidneys, liver and central nervous system. In animals, chloroform causes infertility, birth defects and cancer.

Click here to read more about disinfection byproducts.

 

46

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND80ND
2019ND80ND
2020ND80ND
2021ND100ND
2022ND60ND
2023ND60ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.4 ppb

The EWG Health Guideline of 0.4 ppb for chloroform was based on the California Office of Environmental Health Hazard Assessment's public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer and harm to fetal growth and development.

ppb = parts per billion

All test results

Date Lab ID Result
2018-01-08CA1910018_DST_801-201801080855ND
2018-01-08CA1910018_DST_800-201801080753ND
2018-04-10CA1910018_DST_801-201804100814ND
2018-04-10CA1910018_DST_800-201804100732ND
2018-07-10CA1910018_DST_801-201807100956ND
2018-07-10CA1910018_DST_800-201807100945ND
2018-10-09CA1910018_DST_801-201810091000ND
2018-10-09CA1910018_DST_800-201810090944ND
2019-01-08CA1910018_DST_800-201901081005ND
2019-01-08CA1910018_DST_801-201901081017ND
2019-04-09CA1910018_DST_800-201904090717ND
2019-04-09CA1910018_DST_801-201904090827ND
2019-07-09CA1910018_DST_801-201907090957ND
2019-07-09CA1910018_DST_800-201907090930ND
2019-10-08CA1910018_DST_801-201910081010ND
2019-10-08CA1910018_DST_800-201910080940ND
2020-01-14CA1910018_DST_800-202001141010ND
2020-01-14CA1910018_DST_801-202001141050ND
2020-04-14CA1910018_DST_800-202004140657ND
2020-04-14CA1910018_DST_801-202004140650ND
2020-07-14CA1910018_DST_801-202007140845ND
2020-07-14CA1910018_DST_800-202007140915ND
2020-10-13CA1910018_DST_800-202010131030ND
2020-10-13CA1910018_DST_801-202010131045ND
2021-01-12CA1910018_DST_801-202101120720ND
2021-01-12CA1910018_DST_800-202101120700ND
2021-04-13CA1910018_DST_801-202104130915ND
2021-04-13CA1910018_DST_800-202104130850ND
2021-07-13CA1910018_DST_800-202107131040ND
2021-07-13CA1910018_DST_801-202107131100ND
2021-09-21CA1910018_DST_801-202109211100ND
2021-09-21CA1910018_DST_800-202109211030ND
2021-10-12CA1910018_DST_800-202110120830ND
2021-10-12CA1910018_DST_801-202110120855ND
2022-01-11CA1910018_DST_800-202201111040ND
2022-01-11CA1910018_DST_801-202201111100ND
2022-04-12CA1910018_DST_801-202204121445ND
2022-04-12CA1910018_DST_800-202204121505ND
2022-07-12CA1910018_DST_800-202207121100ND
2022-07-12CA1910018_DST_801-202207121130ND
2023-04-18CA1910018_DST_801-202304181302ND
2023-04-18CA1910018_DST_800-202304181244ND
2023-07-11CA1910018_DST_801-202307111225ND
2023-07-11CA1910018_DST_800-202307111245ND
2023-10-16CA1910018_DST_801-202310160832ND
2023-10-16CA1910018_DST_800-202310160810ND