Know Your Environment. Protect Your Health.

Dibromochloromethane

Shannon Hills Water Department

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)

15

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.138 ppb81ND - 1.10 ppb
20190.583 ppb63ND - 1.30 ppb
20200.138 ppb81ND - 1.10 ppb
20210.650 ppb84ND - 1.50 ppb
20220.968 ppb86ND - 1.47 ppb
2023ND80ND

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
2018-01-0218004000902ND
2018-01-02180040008021.10 ppb
2018-04-0318095018002ND
2018-04-0318095018102ND
2018-07-0218186018402ND
2018-07-0218186018302ND
2018-10-0218277010702ND
2018-10-0218277010602ND
2019-01-0819011003601ND
2019-01-0819011003501ND
2019-07-0919192010902ND
2019-07-09191920110021.000 ppb
2019-10-01192760067021.20 ppb
2019-10-01192760068021.30 ppb
2020-01-0620009012602ND
2020-01-0620009012702ND
2020-04-0120094003202ND
2020-04-0120094003302ND
2020-07-06201910096021.10 ppb
2020-07-0620191009702ND
2020-10-0520281000302ND
2020-10-0520281000202ND
2021-01-0621007002802ND
2021-01-0621007002902ND
2021-04-0521098002302ND
2021-04-0521098002402ND
2021-07-07211890009021.10 ppb
2021-07-07211890010021.20 ppb
2021-10-05212800118021.40 ppb
2021-10-05212800119021.50 ppb
2022-01-04220050008021.40 ppb
2022-01-04220050007021.20 ppb
2022-04-05O196445-THM-1ND
2022-04-05O196446-THM-1ND
2022-07-06O199239-THM-11.19 ppb
2022-07-06O199238-THM-11.13 ppb
2022-10-04O202295-THM-11.35 ppb
2022-10-04O202296-THM-11.47 ppb
2023-01-02O204814-THM-1ND
2023-01-02O204815-THM-1ND
2023-04-04O207311-THM-1ND
2023-04-04O207310-THM-1ND
2023-07-03O210181-THM-1ND
2023-07-03O210180-THM-1ND
2023-10-02O212318-THM-1ND
2023-10-02O212317-THM-1ND