Know Your Environment. Protect Your Health.

Dibromochloromethane

City of Trinidad

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

 

30

Samples

0

Samples exceeding legal limit (MCL)

22

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.79 ppb551.000 ppb - 2.38 ppb
20191.35 ppb54ND - 2.19 ppb
20200.724 ppb53ND - 1.42 ppb
20210.658 ppb52ND - 2.05 ppb
20221.19 ppb54ND - 1.98 ppb
20233.01 ppb54ND - 9.86 ppb

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.1 ppb

The EWG Health Guideline of 0.1 ppb for dibromochloromethane 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
2018-02-23Q18077690011.82 ppb
2018-05-31Q18217750022.38 ppb
2018-09-14Q18371270011.99 ppb
2018-12-10Q18502760021.000 ppb
2018-12-10Q18502760071.77 ppb
2019-03-04Q19089700021.53 ppb
2019-03-04Q19089700112.19 ppb
2019-06-13Q19356970011.54 ppb
2019-09-10Q19633050011.47 ppb
2019-11-07Q1976145001ND
2020-03-18Q20119000021.42 ppb
2020-03-18Q20119000081.14 ppb
2020-04-23Q20161710011.06 ppb
2020-09-24Q2037859001ND
2020-11-10Q2044163001ND
2021-02-04Q2103564002ND
2021-04-15Q2109768001ND
2021-04-15Q2109768008ND
2021-08-26Q21233410011.24 ppb
2021-12-15Q21355220012.05 ppb
2022-03-09Q22081740011.05 ppb
2022-05-16Q22144480031.98 ppb
2022-05-16Q2214448012ND
2022-09-19Q22279400011.80 ppb
2022-11-04Q22335130011.10 ppb
2023-02-27Q23078010042.14 ppb
2023-02-27Q2307801008ND
2023-05-11Q23180070019.86 ppb
2023-08-28Q23367440011.78 ppb
2023-11-20Q23497870011.26 ppb