Know Your Environment. Protect Your Health.

Dibromochloromethane

Reading Area 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.

 

194

Samples

0

Samples exceeding legal limit (MCL)

177

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.07 ppb32320.600 ppb - 1.60 ppb
20190.928 ppb32320.600 ppb - 1.60 ppb
20201.06 ppb34340.700 ppb - 2.10 ppb
20210.556 ppb3217ND - 1.80 ppb
20220.869 ppb32320.600 ppb - 1.30 ppb
20230.666 ppb3230ND - 1.10 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
2018-01-028000469-031.50 ppb
2018-01-028000469-041.50 ppb
2018-01-028000469-051.50 ppb
2018-01-028000469-081.50 ppb
2018-01-048000469-011.50 ppb
2018-01-048000469-021.60 ppb
2018-01-048000469-061.60 ppb
2018-01-048000469-071.60 ppb
2018-04-028007291-031.30 ppb
2018-04-028007291-041.30 ppb
2018-04-028007291-051.20 ppb
2018-04-028007291-081.10 ppb
2018-04-058007291-011.30 ppb
2018-04-058007291-021.30 ppb
2018-04-058007291-061.40 ppb
2018-04-058007291-071.30 ppb
2018-07-028018983-031.000 ppb
2018-07-028018983-04RE1.10 ppb
2018-07-028018983-05RE0.700 ppb
2018-07-028018983-080.700 ppb
2018-07-058018983-010.600 ppb
2018-07-058018983-020.600 ppb
2018-07-058018983-060.600 ppb
2018-07-058018983-070.600 ppb
2018-10-018026912-030.600 ppb
2018-10-018026912-040.700 ppb
2018-10-018026912-050.700 ppb
2018-10-018026912-080.800 ppb
2018-10-048026912-010.700 ppb
2018-10-048026912-020.700 ppb
2018-10-048026912-060.800 ppb
2018-10-048026912-070.700 ppb
2019-01-028037891-030.700 ppb
2019-01-028037891-040.700 ppb
2019-01-028037891-050.900 ppb
2019-01-028037891-081.000 ppb
2019-01-038037891-010.700 ppb
2019-01-038037891-020.700 ppb
2019-01-038037891-060.700 ppb
2019-01-038037891-070.700 ppb
2019-04-019008754-030.700 ppb
2019-04-019008754-050.700 ppb
2019-04-019008754-080.700 ppb
2019-04-029008754-040.700 ppb
2019-04-049008754-010.800 ppb
2019-04-049008754-020.900 ppb
2019-04-049008754-060.800 ppb
2019-04-049008754-070.900 ppb
2019-07-019020550-030.600 ppb
2019-07-019020550-040.700 ppb
2019-07-019020550-050.600 ppb
2019-07-019020550-080.700 ppb
2019-07-029020550-010.600 ppb
2019-07-029020550-020.600 ppb
2019-07-029020550-060.600 ppb
2019-07-029020550-070.600 ppb
2019-10-019033527-031.60 ppb
2019-10-019033527-041.60 ppb
2019-10-019033527-051.50 ppb
2019-10-019033527-081.40 ppb
2019-10-039033527-011.50 ppb
2019-10-039033527-021.60 ppb
2019-10-039033527-061.60 ppb
2019-10-039033527-071.60 ppb
2020-01-021.000 ppb
2020-01-020.900 ppb
2020-01-021.000 ppb
2020-01-020.900 ppb
2020-01-021.000 ppb
2020-01-061.000 ppb
2020-01-060.800 ppb
2020-01-061.000 ppb
2020-04-020.700 ppb
2020-04-020.900 ppb
2020-04-020.800 ppb
2020-04-021.000 ppb
2020-04-020.800 ppb
2020-04-060.900 ppb
2020-04-060.800 ppb
2020-04-061.10 ppb
2020-07-021.20 ppb
2020-07-021.10 ppb
2020-07-021.30 ppb
2020-07-021.10 ppb
2020-07-021.10 ppb
2020-07-062.10 ppb
2020-07-062.10 ppb
2020-07-061.70 ppb
2020-08-0422843057.000.800 ppb
2020-08-040.800 ppb
2020-10-011.10 ppb
2020-10-011.000 ppb
2020-10-011.10 ppb
2020-10-011.000 ppb
2020-10-011.000 ppb
2020-10-051.000 ppb
2020-10-051.000 ppb
2020-10-051.000 ppb
2021-01-04ND
2021-01-04ND
2021-01-04ND
2021-01-06ND
2021-01-06ND
2021-01-06ND
2021-01-06ND
2021-01-06ND
2021-04-01ND
2021-04-01ND
2021-04-01ND
2021-04-01ND
2021-04-01ND
2021-04-050.700 ppb
2021-04-05ND
2021-04-05ND
2021-07-011.30 ppb
2021-07-011.50 ppb
2021-07-011.80 ppb
2021-07-061.30 ppb
2021-07-061.40 ppb
2021-07-061.40 ppb
2021-07-061.40 ppb
2021-07-061.40 ppb
2021-10-040.500 ppb
2021-10-040.500 ppb
2021-10-041.20 ppb
2021-10-060.700 ppb
2021-10-060.700 ppb
2021-10-060.600 ppb
2021-10-060.700 ppb
2021-10-060.700 ppb
2022-01-040.800 ppb
2022-01-040.800 ppb
2022-01-050.800 ppb
2022-01-060.800 ppb
2022-01-060.900 ppb
2022-01-060.900 ppb
2022-01-060.800 ppb
2022-01-100.700 ppb
2022-04-040.600 ppb
2022-04-040.700 ppb
2022-04-040.700 ppb
2022-04-060.600 ppb
2022-04-060.600 ppb
2022-04-060.600 ppb
2022-04-060.600 ppb
2022-04-060.600 ppb
2022-07-051.20 ppb
2022-07-061.20 ppb
2022-07-061.20 ppb
2022-07-071.30 ppb
2022-07-071.20 ppb
2022-07-071.20 ppb
2022-07-071.20 ppb
2022-07-071.20 ppb
2022-10-040.900 ppb
2022-10-040.900 ppb
2022-10-050.800 ppb
2022-10-060.800 ppb
2022-10-060.800 ppb
2022-10-060.800 ppb
2022-10-060.800 ppb
2022-10-060.800 ppb
2023-01-03ND
2023-01-03ND
2023-01-040.600 ppb
2023-01-050.600 ppb
2023-01-050.600 ppb
2023-01-050.600 ppb
2023-01-050.600 ppb
2023-01-050.600 ppb
2023-04-040.500 ppb
2023-04-040.600 ppb
2023-04-050.600 ppb
2023-04-060.700 ppb
2023-04-060.800 ppb
2023-04-060.700 ppb
2023-04-060.700 ppb
2023-04-060.700 ppb
2023-07-020.800 ppb
2023-07-051.000 ppb
2023-07-051.10 ppb
2023-07-051.10 ppb
2023-07-060.900 ppb
2023-07-060.900 ppb
2023-07-060.900 ppb
2023-07-060.800 ppb
2023-10-030.600 ppb
2023-10-030.600 ppb
2023-10-040.600 ppb
2023-10-050.700 ppb
2023-10-050.600 ppb
2023-10-050.600 ppb
2023-10-050.600 ppb
2023-10-050.600 ppb