Know Your Environment. Protect Your Health.

Chloroform

City of Meadows Place

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.

 

24

Samples

0

Samples exceeding legal limit (MCL)

2

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND40ND
2019ND40ND
20200.275 ppb41ND - 1.10 ppb
2021ND40ND
2022ND40ND
20230.275 ppb41ND - 1.10 ppb

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
2018-01-26AE11042ND
2018-01-26AE11068ND
2018-01-26AE11038ND
2018-06-01AE28512ND
2019-01-11AE49619ND
2019-01-11AE49621ND
2019-03-21AE59460ND
2019-05-14AE66197ND
2020-01-24AE953781.10 ppb
2020-01-24AE95382ND
2020-04-08AF06158ND
2020-07-10AF19146ND
2021-01-14AF39524ND
2021-01-14AF39542ND
2021-04-12AF49781ND
2021-05-10AF52960ND
2022-01-18AF80502ND
2022-01-18AF80506ND
2022-01-18AF80508ND
2022-06-29AG02779ND
2023-01-18AG24997ND
2023-03-13AG32689ND
2023-06-23AG45850ND
2023-09-05AG548761.10 ppb