Know Your Environment. Protect Your Health.

Bromodichloromethane

City of Alvarado

Bromodichloromethane, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Bromodichloromethane and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy. Click here to read more about disinfection byproducts.

 

24

Samples

0

Samples exceeding legal limit (MCL)

7

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND60ND
2019ND60ND
20201.93 ppb61ND - 11.6 ppb
202114.5 ppb2214.4 ppb - 14.6 ppb
202213.9 ppb2213.6 ppb - 14.1 ppb
202314.1 ppb2212.8 ppb - 15.4 ppb

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.06 ppb

The EWG Health Guideline of 0.06 ppb for bromodichloromethane 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
2018-03-13Q1810144004ND
2018-03-13Q1810144005ND
2018-03-13Q1810144001ND
2018-05-15Q1819645001ND
2018-05-15Q1819645002ND
2018-12-14Q1851816004ND
2019-03-25Q1912075004ND
2019-03-25Q1912075006ND
2019-03-25Q1912075007ND
2019-03-25Q1912075011ND
2019-08-12Q1953426001ND
2019-08-12Q1953426002ND
2020-06-30Q2025912012ND
2020-06-30Q202591203511.6 ppb
2020-06-30Q2025912034ND
2020-06-30Q2025912018ND
2020-06-30Q2025912016ND
2020-06-30Q2025912014ND
2021-09-17Q212564700114.6 ppb
2021-09-17Q212564700214.4 ppb
2022-06-13Q221638800214.1 ppb
2022-06-13Q221638800313.6 ppb
2023-07-27Q233023100215.4 ppb
2023-07-27Q233023100312.8 ppb