Know Your Environment. Protect Your Health.

Chloroform

Bellflower Home Gardens Water Company

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.

 

48

Samples

0

Samples exceeding legal limit (MCL)

1

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND80ND
2019ND80ND
2020ND80ND
2021ND80ND
20220.0638 ppb81ND - 0.510 ppb
2023ND80ND

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
2018-01-08CA1910012_DST_801-201801080945ND
2018-01-08CA1910012_DST_800-201801080955ND
2018-04-02CA1910012_DST_801-201804021130ND
2018-04-02CA1910012_DST_800-201804021137ND
2018-07-02CA1910012_DST_800-201807021553ND
2018-07-02CA1910012_DST_801-201807021540ND
2018-10-15CA1910012_DST_801-201810151048ND
2018-10-15CA1910012_DST_800-201810151056ND
2019-01-07CA1910012_DST_800-201901071125ND
2019-01-07CA1910012_DST_801-201901071115ND
2019-04-15CA1910012_DST_800-201904151040ND
2019-04-15CA1910012_DST_801-201904151045ND
2019-07-15CA1910012_DST_800-201907150935ND
2019-07-15CA1910012_DST_801-201907150940ND
2019-10-01CA1910012_DST_801-201910011120ND
2019-10-01CA1910012_DST_800-201910011130ND
2020-01-06CA1910012_DST_801-202001060855ND
2020-01-06CA1910012_DST_800-202001060900ND
2020-04-06CA1910012_DST_800-202004061157ND
2020-04-06CA1910012_DST_801-202004061146ND
2020-07-06CA1910012_DST_800-202007060855ND
2020-07-06CA1910012_DST_801-202007060900ND
2020-10-05CA1910012_DST_800-202010050936ND
2020-10-05CA1910012_DST_801-202010050930ND
2021-01-04CA1910012_DST_800-202101040931ND
2021-01-04CA1910012_DST_801-202101040920ND
2021-04-05CA1910012_DST_801-202104050850ND
2021-04-05CA1910012_DST_800-202104050906ND
2021-07-06CA1910012_DST_801-202107061120ND
2021-07-06CA1910012_DST_800-202107061128ND
2021-10-04CA1910012_DST_800-202110040916ND
2021-10-04CA1910012_DST_801-202110040905ND
2022-01-03CA1910012_DST_801-202201030858ND
2022-01-03CA1910012_DST_800-202201030905ND
2022-04-04CA1910012_DST_800-2022040410400.510 ppb
2022-04-04CA1910012_DST_801-202204041025ND
2022-07-05CA1910012_DST_800-202207051105ND
2022-07-05CA1910012_DST_801-202207051055ND
2022-10-03CA1910012_DST_800-202210031135ND
2022-10-03CA1910012_DST_801-202210031120ND
2023-01-03CA1910012_DST_800-202301030953ND
2023-01-03CA1910012_DST_801-202301030940ND
2023-04-03CA1910012_DST_800-202304031150ND
2023-04-03CA1910012_DST_801-202304031140ND
2023-07-10CA1910012_DST_801-202307101150ND
2023-07-10CA1910012_DST_800-202307101200ND
2023-10-02CA1910012_DST_800-202310021150ND
2023-10-02CA1910012_DST_801-202310021136ND