Know Your Environment. Protect Your Health.

Bromodichloromethane

Marygold Mutual Water Company

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.

 

34

Samples

0

Samples exceeding legal limit (MCL)

17

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.125 ppb81ND - 1.000 ppb
20191.16 ppb84ND - 3.80 ppb
20202.66 ppb83ND - 10.3 ppb
20211.48 ppb43ND - 3.00 ppb
20221.55 ppb221.30 ppb - 1.80 ppb
20231.93 ppb441.20 ppb - 3.80 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
2018-03-21CA3610028_DST_602-201803211230ND
2018-03-21CA3610028_DST_601-2018032112241.000 ppb
2018-06-26CA3610028_DST_601-201806261018ND
2018-06-26CA3610028_DST_602-201806261004ND
2018-09-12CA3610028_DST_602-201809121145ND
2018-09-12CA3610028_DST_601-201809121138ND
2018-12-19CA3610028_DST_601-201812191050ND
2018-12-19CA3610028_DST_602-201812191034ND
2019-03-13CA3610028_DST_601-2019031310241.90 ppb
2019-03-13CA3610028_DST_602-2019031310443.80 ppb
2019-06-19CA3610028_DST_601-201906191121ND
2019-06-19CA3610028_DST_602-201906191130ND
2019-09-04CA3610028_DST_602-201909041145ND
2019-09-04CA3610028_DST_601-201909041135ND
2019-12-04CA3610028_DST_602-2019120409551.70 ppb
2019-12-04CA3610028_DST_601-2019120409341.90 ppb
2020-03-04CA3610028_DST_601-202003040740ND
2020-03-04CA3610028_DST_602-20200304081110.3 ppb
2020-06-03CA3610028_DST_602-2020060309009.60 ppb
2020-06-03CA3610028_DST_601-2020060309121.40 ppb
2020-09-02CA3610028_DST_602-202009020754ND
2020-09-02CA3610028_DST_601-202009020735ND
2020-12-09CA3610028_DST_601-202012090730ND
2020-12-09CA3610028_DST_602-202012090741ND
2021-03-03CA3610028_DST_601-2021030307323.00 ppb
2021-03-03CA3610028_DST_602-2021030308021.50 ppb
2021-05-26CA3610028_DST_602-202105260812ND
2021-05-26CA3610028_DST_601-2021052607351.40 ppb
2022-03-02CA3610028_DST_602-2022030207421.80 ppb
2022-03-02CA3610028_DST_601-2022030207201.30 ppb
2023-03-01CA3610028_DST_601-2023030106151.40 ppb
2023-03-01CA3610028_DST_602-2023030106251.20 ppb
2023-08-09CA3610028_DST_601-2023080906403.80 ppb
2023-08-09CA3610028_DST_602-2023080906301.30 ppb