Know Your Environment. Protect Your Health.

Bromodichloromethane

Walla Walla Water Division

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.

 

85

Samples

0

Samples exceeding legal limit (MCL)

79

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.765 ppb1715ND - 1.90 ppb
20190.667 ppb1815ND - 1.50 ppb
2020N/A00N/A
20211.09 ppb14140.700 ppb - 1.40 ppb
20221.24 ppb1918ND - 2.00 ppb
20231.34 ppb17170.800 ppb - 1.90 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
2018-01-020.600 ppb
2018-01-160.800 ppb
2018-01-230.700 ppb
2018-02-080.900 ppb
2018-02-131.70 ppb
2018-02-131.90 ppb
2018-03-280.700 ppb
2018-04-110.800 ppb
2018-04-160.700 ppb
2018-05-160.700 ppb
2018-05-160.700 ppb
2018-08-140.700 ppb
2018-08-140.800 ppb
2018-09-19ND
2018-11-130.600 ppb
2018-11-130.700 ppb
2018-11-20ND
2019-01-160.700 ppb
2019-01-290.700 ppb
2019-02-200.500 ppb
2019-02-261.40 ppb
2019-02-261.50 ppb
2019-03-040.500 ppb
2019-03-190.500 ppb
2019-04-100.500 ppb
2019-04-25ND
2019-05-08ND
2019-05-150.900 ppb
2019-05-150.700 ppb
2019-08-280.800 ppb
2019-08-280.900 ppb
2019-09-26ND
2019-11-130.800 ppb
2019-11-130.700 ppb
2019-11-250.900 ppb
2021-02-1040781131.10 ppb
2021-02-1040781111.10 ppb
2021-05-2541208070.800 ppb
2021-05-2541208091.10 ppb
2021-05-2541208030.700 ppb
2021-05-2541208050.800 ppb
2021-08-1741661161.30 ppb
2021-08-1741661221.20 ppb
2021-08-1741661181.30 ppb
2021-08-1741661201.10 ppb
2021-11-1642412161.10 ppb
2021-11-1642412251.40 ppb
2021-11-1642412271.10 ppb
2021-11-1642412111.20 ppb
2022-02-1642474781.000 ppb
2022-02-1642474771.000 ppb
2022-02-2242474681.50 ppb
2022-02-2242473251.80 ppb
2022-02-2242473231.90 ppb
2022-02-2242474731.10 ppb
2022-05-2342997142.00 ppb
2022-05-2342997181.50 ppb
2022-05-2342997161.20 ppb
2022-05-2342997121.60 ppb
2022-09-0143658371.60 ppb
2022-09-0143658321.30 ppb
2022-09-0143658411.50 ppb
2022-09-0143658181.40 ppb
2022-11-2143848090.600 ppb
2022-11-2143848140.700 ppb
2022-11-2143848040.900 ppb
2022-11-2143848001.000 ppb
2022-11-214384796ND
2023-02-2244230751.50 ppb
2023-02-2244232091.50 ppb
2023-02-2244230851.40 ppb
2023-02-2244230771.30 ppb
2023-02-2244230801.000 ppb
2023-05-2444665621.10 ppb
2023-05-2444665591.000 ppb
2023-05-2544689560.800 ppb
2023-05-2544689541.000 ppb
2023-08-2345128801.60 ppb
2023-08-2345128781.90 ppb
2023-08-2345128821.80 ppb
2023-08-2345128841.60 ppb
2023-11-1445599341.40 ppb
2023-11-1445599360.900 ppb
2023-11-1445599321.40 ppb
2023-11-1445599381.60 ppb