Know Your Environment. Protect Your Health.

Dibromochloromethane

Tbcd West Treatment Plant

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.

 

54

Samples

0

Samples exceeding legal limit (MCL)

45

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20183.33 ppb97ND - 6.00 ppb
20191.000 ppb96ND - 2.40 ppb
20202.19 ppb95ND - 6.30 ppb
20211.94 ppb991.10 ppb - 3.60 ppb
20223.22 ppb991.50 ppb - 7.90 ppb
20233.12 ppb991.50 ppb - 10.2 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
2018-01-23AE09845ND
2018-01-23AE09843ND
2018-04-10AE218723.60 ppb
2018-04-10AE218693.00 ppb
2018-08-01AE352415.70 ppb
2018-08-01AE352426.00 ppb
2018-08-01AE353315.80 ppb
2018-10-22AE440983.00 ppb
2018-10-22AE440992.90 ppb
2019-01-30AE521882.40 ppb
2019-01-30AE521892.20 ppb
2019-05-30AE68566ND
2019-05-30AE68579ND
2019-08-05AE770651.000 ppb
2019-08-05AE769901.10 ppb
2019-08-05AE76989ND
2019-11-05AE884351.30 ppb
2019-11-05AE884381.000 ppb
2020-01-14AE93415ND
2020-01-14AE93418ND
2020-04-07AF05843ND
2020-04-07AF05846ND
2020-09-24AF284102.30 ppb
2020-09-24AF284122.80 ppb
2020-09-24AF284494.00 ppb
2020-11-16AF345556.30 ppb
2020-11-16AF345654.30 ppb
2021-03-23AF478393.60 ppb
2021-03-23AF478403.10 ppb
2021-04-13AF500852.00 ppb
2021-04-13AF500881.70 ppb
2021-07-06AF609231.90 ppb
2021-07-06AF609271.60 ppb
2021-07-06AF609881.40 ppb
2021-10-06AF724051.10 ppb
2021-10-06AF724061.10 ppb
2022-03-22AF899921.70 ppb
2022-03-22AF899931.50 ppb
2022-04-07AF924111.60 ppb
2022-04-07AF924141.70 ppb
2022-08-09AG085441.60 ppb
2022-08-09AG086283.40 ppb
2022-08-09AG085372.10 ppb
2022-11-22AG196177.50 ppb
2022-11-22AG196217.90 ppb
2023-01-26AG264443.40 ppb
2023-01-26AG264452.80 ppb
2023-04-18AG370511.50 ppb
2023-04-18AG370522.40 ppb
2023-08-24AG539762.00 ppb
2023-08-24AG539791.80 ppb
2023-08-24AG540082.20 ppb
2023-10-03AG582361.80 ppb
2023-10-03AG5823910.2 ppb