Know Your Environment. Protect Your Health.

Dibromochloromethane

Cross Valley 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.

 

95

Samples

0

Samples exceeding legal limit (MCL)

21

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.562 ppb215ND - 3.50 ppb
20190.459 ppb223ND - 4.30 ppb
2020N/A00N/A
20211.01 ppb164ND - 5.20 ppb
20220.945 ppb205ND - 4.30 ppb
20231.03 ppb164ND - 4.60 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
2018-01-04ND
2018-01-04ND
2018-01-04ND
2018-01-041.60 ppb
2018-04-03ND
2018-04-03ND
2018-04-03ND
2018-04-031.90 ppb
2018-06-131.50 ppb
2018-06-13ND
2018-06-13ND
2018-06-13ND
2018-06-13ND
2018-07-02ND
2018-07-02ND
2018-07-02ND
2018-07-023.50 ppb
2018-10-243.30 ppb
2018-10-24ND
2018-10-24ND
2018-10-24ND
2019-01-10ND
2019-01-10ND
2019-01-10ND
2019-01-10ND
2019-04-09ND
2019-04-09ND
2019-04-09ND
2019-04-093.20 ppb
2019-07-03ND
2019-07-03ND
2019-07-032.60 ppb
2019-07-03ND
2019-09-04ND
2019-09-04ND
2019-09-04ND
2019-10-02ND
2019-10-02ND
2019-10-024.30 ppb
2019-10-02ND
2019-12-17ND
2019-12-17ND
2019-12-17ND
2021-03-174090647ND
2021-03-174090649ND
2021-03-1740907024.00 ppb
2021-03-174090695ND
2021-05-124114143ND
2021-05-1241141494.00 ppb
2021-05-124114145ND
2021-05-124114147ND
2021-07-144145118ND
2021-07-144145120ND
2021-07-144145123ND
2021-07-1441451252.90 ppb
2021-10-1241977605.20 ppb
2021-10-124197762ND
2021-10-124197758ND
2021-10-124197764ND
2022-01-314254465ND
2022-01-314254442ND
2022-01-314254478ND
2022-02-2342474253.90 ppb
2022-04-214284284ND
2022-04-2143331693.50 ppb
2022-04-214284282ND
2022-04-214284280ND
2022-07-224323710ND
2022-07-2243236913.60 ppb
2022-07-224323707ND
2022-07-224323689ND
2022-08-104339521ND
2022-08-104339525ND
2022-08-1043395144.30 ppb
2022-08-104339518ND
2022-12-084389389ND
2022-12-084389384ND
2022-12-0843893803.60 ppb
2022-12-084389376ND
2023-02-164422914ND
2023-02-164422917ND
2023-02-164422928ND
2023-02-1644229233.60 ppb
2023-04-124439762ND
2023-04-124439737ND
2023-04-1244397354.10 ppb
2023-04-124439733ND
2023-07-2544908114.20 ppb
2023-07-254490813ND
2023-07-254490809ND
2023-07-254490807ND
2023-10-2445398234.60 ppb
2023-10-244539807ND
2023-10-244539828ND
2023-10-244539812ND