Know Your Environment. Protect Your Health.

Dibromochloromethane

City of Port Angeles

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.

 

83

Samples

0

Samples exceeding legal limit (MCL)

73

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.739 ppb1816ND - 1.40 ppb
20190.829 ppb1715ND - 2.30 ppb
2020N/A00N/A
20210.638 ppb1613ND - 1.30 ppb
20220.975 ppb1614ND - 4.30 ppb
20230.919 ppb1615ND - 1.70 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
2018-01-310.700 ppb
2018-01-310.500 ppb
2018-01-310.800 ppb
2018-01-31ND
2018-01-311.30 ppb
2018-04-110.900 ppb
2018-04-11ND
2018-04-110.800 ppb
2018-04-110.500 ppb
2018-04-111.40 ppb
2018-07-130.600 ppb
2018-07-130.800 ppb
2018-07-131.40 ppb
2018-07-130.800 ppb
2018-10-240.800 ppb
2018-10-240.800 ppb
2018-10-240.700 ppb
2018-11-080.500 ppb
2019-01-171.30 ppb
2019-01-170.600 ppb
2019-01-170.500 ppb
2019-01-17ND
2019-04-100.500 ppb
2019-04-101.30 ppb
2019-04-100.900 ppb
2019-04-100.600 ppb
2019-05-16ND
2019-07-160.500 ppb
2019-07-160.600 ppb
2019-07-161.40 ppb
2019-07-160.800 ppb
2019-10-232.30 ppb
2019-10-231.20 ppb
2019-10-230.900 ppb
2019-10-230.700 ppb
2021-03-0940906390.900 ppb
2021-03-0940906410.600 ppb
2021-03-0940906360.600 ppb
2021-03-0940906350.500 ppb
2021-06-0841687990.600 ppb
2021-06-084168801ND
2021-06-0841688031.10 ppb
2021-06-0841688051.30 ppb
2021-09-1441787551.000 ppb
2021-09-144178734ND
2021-09-1441787491.10 ppb
2021-09-1441787410.600 ppb
2021-12-1342214540.800 ppb
2021-12-1342214560.600 ppb
2021-12-1342214520.500 ppb
2021-12-134221450ND
2022-02-0842461550.500 ppb
2022-02-0842461574.30 ppb
2022-02-0842461530.500 ppb
2022-02-0842461590.500 ppb
2022-04-1242729270.800 ppb
2022-04-1242729230.500 ppb
2022-04-1242729210.600 ppb
2022-04-1242729190.600 ppb
2022-07-124316192ND
2022-07-1243161900.500 ppb
2022-07-124316188ND
2022-07-1243161940.800 ppb
2022-10-1843684230.800 ppb
2022-10-1843684250.800 ppb
2022-10-2043684211.10 ppb
2022-10-2643703733.30 ppb
2023-01-2444077360.800 ppb
2023-01-2444077341.000 ppb
2023-01-2444077381.20 ppb
2023-01-2444077320.700 ppb
2023-05-0944574831.60 ppb
2023-05-0944574890.600 ppb
2023-05-0944574871.000 ppb
2023-05-0944574850.800 ppb
2023-08-0244970211.20 ppb
2023-08-0244970250.700 ppb
2023-08-024497027ND
2023-08-0244970230.600 ppb
2023-11-0745556061.70 ppb
2023-11-0745556041.000 ppb
2023-11-0745556000.800 ppb
2023-11-0745556021.000 ppb