Know Your Environment. Protect Your Health.

Dibromochloromethane

St Marys Area Water Authority

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.

 

96

Samples

0

Samples exceeding legal limit (MCL)

52

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.313 ppb165ND - 1.000 ppb
20190.504 ppb169ND - 1.000 ppb
20200.876 ppb1615ND - 1.12 ppb
20210.691 ppb1612ND - 1.25 ppb
20220.269 ppb167ND - 0.840 ppb
20230.279 ppb164ND - 1.18 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
2018-03-15(704) Windfa1.000 ppb
2018-03-15(701 ) Jet1.000 ppb
2018-03-15(702) Fox TaND
2018-03-15(703) GintheND
2018-06-12(701 ) Jet1.000 ppb
2018-06-12(704) WindfaND
2018-06-12(702) Fox TaND
2018-06-12(703) GintheND
2018-09-11(701 ) JetND
2018-09-11(704) Windfa1.000 ppb
2018-09-11(702) Fox Ta1.000 ppb
2018-09-11(703) GintheND
2018-12-11(701 ) JetND
2018-12-11(704) WindfaND
2018-12-11(703) GintheND
2018-12-11(702) Fox TaND
2019-03-12(704) Windfa1.000 ppb
2019-03-12(701 ) Jet1.000 ppb
2019-03-12(702) Fox TaND
2019-03-12(703) Ginthe1.000 ppb
2019-06-11(704) Windfa1.000 ppb
2019-06-11(701 ) JetND
2019-06-11(702) Fox TaND
2019-06-11(703) GintheND
2019-09-10(701 ) JetND
2019-09-10(702) Fox TaND
2019-09-10(703) GintheND
2019-09-10(704) Windfa1.000 ppb
2019-12-109L16180-040.950 ppb
2019-12-109L16180-010.800 ppb
2019-12-109L16180-020.760 ppb
2019-12-109L16180-030.560 ppb
2020-03-100.940 ppb
2020-03-100.990 ppb
2020-03-100.540 ppb
2020-03-100.920 ppb
2020-06-091.03 ppb
2020-06-090.960 ppb
2020-06-09ND
2020-06-090.900 ppb
2020-09-091.08 ppb
2020-09-091.11 ppb
2020-09-090.990 ppb
2020-09-091.07 ppb
2020-12-150.830 ppb
2020-12-150.940 ppb
2020-12-150.590 ppb
2020-12-151.12 ppb
2021-03-231.25 ppb
2021-03-231.12 ppb
2021-03-230.830 ppb
2021-03-230.720 ppb
2021-06-090.920 ppb
2021-06-090.800 ppb
2021-06-090.740 ppb
2021-06-090.920 ppb
2021-09-091.19 ppb
2021-09-09ND
2021-09-09ND
2021-09-091.24 ppb
2021-12-090.530 ppb
2021-12-09ND
2021-12-09ND
2021-12-090.790 ppb
2022-03-090.560 ppb
2022-03-09ND
2022-03-09ND
2022-03-09ND
2022-06-090.620 ppb
2022-06-090.520 ppb
2022-06-09ND
2022-06-090.550 ppb
2022-09-090.660 ppb
2022-09-090.840 ppb
2022-09-09ND
2022-09-090.560 ppb
2022-12-09ND
2022-12-09ND
2022-12-09ND
2022-12-09ND
2023-03-09ND
2023-03-09ND
2023-03-09ND
2023-03-09ND
2023-06-09ND
2023-06-09ND
2023-06-09ND
2023-06-09ND
2023-09-121.17 ppb
2023-09-121.18 ppb
2023-09-12ND
2023-09-121.06 ppb
2023-12-12ND
2023-12-121.05 ppb
2023-12-12ND
2023-12-12ND