Know Your Environment. Protect Your Health.

Dibromochloromethane

Gateway Public Water Authority

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.

 

46

Samples

0

Samples exceeding legal limit (MCL)

5

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND80ND
20190.167 ppb61ND - 1.000 ppb
2020ND80ND
20210.288 ppb82ND - 1.20 ppb
2022ND80ND
20230.285 ppb82ND - 1.18 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
2018-01-2218025008102ND
2018-01-2218025008402ND
2018-04-2418116004102ND
2018-04-2418116004502ND
2018-07-2318207004702ND
2018-07-2318207004202ND
2018-11-2718332005401ND
2018-11-2718332005001ND
2019-01-2219024006902ND
2019-01-22190240071021.000 ppb
2019-04-1619108009302ND
2019-04-1619108009102ND
2019-07-1619198003802ND
2019-07-1619198004402ND
2020-01-2220023010102ND
2020-01-2220023010002ND
2020-04-1420107008902ND
2020-04-1420107009002ND
2020-07-1420198014502ND
2020-07-1420198014602ND
2020-10-1320289001202ND
2020-10-1320289001102ND
2021-01-1221014011802ND
2021-01-1221014011902ND
2021-04-1321105016902ND
2021-04-1321105016802ND
2021-07-1321196011102ND
2021-07-1321196011002ND
2021-10-12212870096021.10 ppb
2021-10-12212870097021.20 ppb
2022-01-1222014002402ND
2022-01-1222014002502ND
2022-04-12O196905-THM-1ND
2022-04-12O196906-THM-1ND
2022-07-12O199599-THM-1ND
2022-07-12O199600-THM-1ND
2022-10-11O202615-THM-1ND
2022-10-11O202616-THM-1ND
2023-01-09O205035-THM-11.10 ppb
2023-01-09O205034-THM-11.18 ppb
2023-04-11O207786-THM-1ND
2023-04-11O207785-THM-1ND
2023-07-11O210536-THM-1ND
2023-07-11O210535-THM-1ND
2023-10-10O212912-THM-1ND
2023-10-10O212913-THM-1ND