Know Your Environment. Protect Your Health.

Bromodichloromethane

Silverdale Water District 16

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.

 

22

Samples

0

Samples exceeding legal limit (MCL)

10

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20182.63 ppb32ND - 4.60 ppb
20191.12 ppb220.840 ppb - 1.40 ppb
2020N/A00N/A
20210.492 ppb122ND - 3.20 ppb
20222.90 ppb32ND - 4.50 ppb
20232.40 ppb221.40 ppb - 3.40 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 Lab ID Result
2018-08-153.30 ppb
2018-08-154.60 ppb
2018-09-04ND
2019-06-240.840 ppb
2019-06-241.40 ppb
2021-06-224149408ND
2021-06-224142809ND
2021-06-234142807ND
2021-06-234142806ND
2021-06-234142810ND
2021-06-234142808ND
2021-08-1141664663.20 ppb
2021-08-1141664652.70 ppb
2021-09-154178921ND
2021-09-154178922ND
2021-09-204178920ND
2021-12-064213471ND
2022-07-254419133ND
2022-07-2643220994.20 ppb
2022-07-2643221014.50 ppb
2023-07-1144854491.40 ppb
2023-08-2845133173.40 ppb