Know Your Environment. Protect Your Health.

Dibromochloromethane

East Pasadena Water Company

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.

 

12

Samples

0

Samples exceeding legal limit (MCL)

6

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.900 ppb21ND - 1.80 ppb
20190.650 ppb21ND - 1.30 ppb
20203.40 ppb221.40 ppb - 5.40 ppb
20216.50 ppb21ND - 13.0 ppb
20220.550 ppb21ND - 1.10 ppb
2023ND20ND

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
2018-07-30CA1910020_DST_800-201807301130ND
2018-07-30CA1910020_DST_801-2018073010351.80 ppb
2019-07-29CA1910020_DST_801-2019072909501.30 ppb
2019-07-29CA1910020_DST_800-201907291100ND
2020-07-28CA1910020_DST_801-2020072809305.40 ppb
2020-07-28CA1910020_DST_800-2020072811001.40 ppb
2021-07-27CA1910020_DST_800-202107271155ND
2021-07-27CA1910020_DST_801-20210727113513.0 ppb
2022-07-29CA1910020_DST_801-2022072911001.10 ppb
2022-07-29CA1910020_DST_800-202207291215ND
2023-07-28CA1910020_DST_800-202307281115ND
2023-07-28CA1910020_DST_801-202307280955ND