Know Your Environment. Protect Your Health.

Dibromochloromethane

North Castle Water District #1

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.

 

60

Samples

0

Samples exceeding legal limit (MCL)

6

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.0363 ppb81ND - 0.290 ppb
20190.0625 ppb82ND - 0.250 ppb
20200.391 ppb113ND - 2.00 ppb
2021ND110ND
2022ND110ND
2023ND110ND

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
2018-01-17AU01229-DBP2ND
2018-01-17AU01228-DBP2ND
2018-04-18AU07891-DBP2ND
2018-04-19AU08012-DBP2ND
2018-07-16AU14980-DBP2ND
2018-07-16AU14979-DBP2ND
2018-10-17AU22610-DBP20.290 ppb
2018-10-17AU22609-DBP2ND
2019-01-16AV01250-DBP2ND
2019-01-16AV01251-DBP2ND
2019-04-17AV07777-DBP2ND
2019-04-17AV07776-DBP2ND
2019-07-16AV14840-DBP2ND
2019-07-16AV14841-DBP2ND
2019-10-15AV21824-DBP20.250 ppb
2019-10-15AV21823-DBP20.250 ppb
2020-01-16AW01178-DBP2ND
2020-01-16AW01177-DBP20.300 ppb
2020-02-26AW03948-DBP2ND
2020-02-26AW03946-DBP2ND
2020-04-16AW07156-DBP22.00 ppb
2020-04-16AW07155-DBP22.00 ppb
2020-07-09AW13032-DBP2ND
2020-07-15AW13438-DBP2ND
2020-07-15AW13439-DBP2ND
2020-10-19AW20209-DBP2ND
2020-10-19AW20208-DBP2ND
2021-01-20AX01301-DBP2ND
2021-01-20AX01302-DBP2ND
2021-03-03AX04228-DBP2ND
2021-03-03AX04222-DBP2ND
2021-04-15AX07009-DBP2ND
2021-04-15AX07098-DBP2ND
2021-07-06AX13093-DBP2ND
2021-07-15AX13995-DBP2ND
2021-07-15AX13996-DBP2ND
2021-10-18AX21096-DBP2ND
2021-10-18AX21095-DBP2ND
2022-01-18AY01008-DBP2ND
2022-01-18AY01007-DBP2ND
2022-03-01AY03614-DBP2ND
2022-03-01AY03620-DBP2ND
2022-04-20AY06633-DBP2ND
2022-04-20AY06632-DBP2ND
2022-07-06AY11619-DBP2ND
2022-07-18AY12379-DBP2ND
2022-07-18AY12380-DBP2ND
2022-10-18AY18766-DBP2ND
2022-10-18AY18767-DBP2ND
2023-01-18AZ01074-DBP2ND
2023-01-18AZ01075-DBP2ND
2023-03-22AZ05098-DBP2ND
2023-03-22AZ05100-DBP2ND
2023-04-18AZ06916-DBP2ND
2023-04-18AZ06915-DBP2ND
2023-07-18AZ12951-DBP2ND
2023-07-18AZ12952-DBP2ND
2023-07-25AZ13471-DBP2ND
2023-10-17AZ19139-DBP2ND
2023-10-17AZ19140-DBP2ND