Know Your Environment. Protect Your Health.

Dibromochloromethane

Applehill Farm 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.

 

20

Samples

0

Samples exceeding legal limit (MCL)

17

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.531 ppb220.516 ppb - 0.546 ppb
20191.03 ppb220.989 ppb - 1.07 ppb
20200.319 ppb42ND - 0.677 ppb
20210.780 ppb43ND - 2.07 ppb
20220.696 ppb440.572 ppb - 1.04 ppb
20230.632 ppb440.541 ppb - 0.703 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
2018-08-09AU17056-DBP20.516 ppb
2018-08-09AU17055-DBP20.546 ppb
2019-08-09AV16952-DBP21.07 ppb
2019-08-09AV16945-DBP20.989 ppb
2020-06-17AW11405-DBP20.677 ppb
2020-08-10AW15260-DBP2ND
2020-08-10AW15261-DBP2ND
2020-12-09AW23542-DBP20.600 ppb
2021-05-19AX09625-DBP2ND
2021-08-10AX16108-DBP20.560 ppb
2021-08-10AX16109-DBP20.490 ppb
2021-10-27AX21685-DBP22.07 ppb
2022-06-08AY09683-DBP20.581 ppb
2022-08-10AY14160-DBP20.572 ppb
2022-08-10AY14159-DBP20.589 ppb
2022-10-06AY18083-DBP21.04 ppb
2023-05-22AZ09222-DBP20.703 ppb
2023-08-08AZ14481-DBP20.656 ppb
2023-08-08AZ14480-DBP20.541 ppb
2023-11-15AZ21006-DBP20.628 ppb