Know Your Environment. Protect Your Health.

Dibromochloromethane

Ruth Water District

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.

 

13

Samples

0

Samples exceeding legal limit (MCL)

11

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.213 ppb32ND - 0.380 ppb
20190.550 ppb21ND - 1.10 ppb
20200.630 ppb220.630 ppb
20210.970 ppb220.540 ppb - 1.40 ppb
20221.55 ppb221.30 ppb - 1.80 ppb
20232.00 ppb221.50 ppb - 2.50 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
2018-09-18B18091818-0010.380 ppb
2018-09-18B18091818-0020.260 ppb
2018-11-1518110454-001ND
2019-09-0419090167-0011.10 ppb
2019-09-0419090167-002ND
2020-09-032020090906570.630 ppb
2020-09-032020090906590.630 ppb
2021-09-092021091405961.40 ppb
2021-09-092021091405970.540 ppb
2022-09-1522090508-0011.30 ppb
2022-09-1522090508-0021.80 ppb
2023-09-1323090282-0011.50 ppb
2023-09-1323090282-0022.50 ppb