Know Your Environment. Protect Your Health.

Bromodichloromethane

Littleton Water Department

Bromodichloromethane, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Bromodichloromethane and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy. Click here to read more about disinfection byproducts.

 

56

Samples

0

Samples exceeding legal limit (MCL)

16

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.02 ppb82ND - 7.66 ppb
20190.746 ppb82ND - 4.87 ppb
20200.716 ppb83ND - 4.08 ppb
20210.803 ppb113ND - 4.01 ppb
20220.156 ppb91ND - 1.40 ppb
20232.11 ppb125ND - 11.0 ppb

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.06 ppb

The EWG Health Guideline of 0.06 ppb for bromodichloromethane 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 Result
2018-04-11ND
2018-05-01ND
2018-05-01ND
2018-05-01ND
2018-05-07ND
2018-05-070.500 ppb
2018-06-19ND
2018-08-217.66 ppb
2019-05-01ND
2019-05-011.10 ppb
2019-05-01ND
2019-05-01ND
2019-05-30ND
2019-06-05ND
2019-06-17ND
2019-08-064.87 ppb
2020-05-14ND
2020-05-14ND
2020-05-260.900 ppb
2020-05-26ND
2020-05-26ND
2020-05-26ND
2020-06-160.750 ppb
2020-08-184.08 ppb
2021-04-05ND
2021-04-05ND
2021-04-050.810 ppb
2021-04-05ND
2021-04-05ND
2021-04-12ND
2021-06-09ND
2021-07-26ND
2021-08-254.01 ppb
2021-08-254.01 ppb
2021-10-21ND
2022-02-16ND
2022-05-18ND
2022-05-18ND
2022-05-18ND
2022-05-18ND
2022-05-18ND
2022-05-181.40 ppb
2022-05-18ND
2022-05-18ND
2023-05-256.80 ppb
2023-06-16ND
2023-06-16ND
2023-06-16ND
2023-06-16ND
2023-06-16ND
2023-06-161.50 ppb
2023-06-16ND
2023-06-16ND
2023-07-203.90 ppb
2023-08-2211.0 ppb
2023-10-042.10 ppb