Dibromochloromethane
Wolcott Water Department
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.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2018 | 0.558 ppb | 8 | 7 | ND - 0.760 ppb |
| 2019 | 0.309 ppb | 8 | 4 | ND - 0.700 ppb |
| 2020 | 0.263 ppb | 8 | 3 | ND - 0.900 ppb |
| 2021 | 0.474 ppb | 8 | 6 | ND - 0.700 ppb |
| 2022 | 0.490 ppb | 9 | 7 | ND - 0.840 ppb |
| 2023 | 0.319 ppb | 7 | 4 | ND - 0.600 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 |
|---|---|---|
| 2018-01-09 | 100069GE 1 | 0.580 ppb |
| 2018-01-09 | 100068GE 1 | 0.500 ppb |
| 2018-04-05 | 101561GE 1 | 0.760 ppb |
| 2018-04-05 | 101560GE 1 | 0.710 ppb |
| 2018-07-05 | 103839GE 1 | 0.580 ppb |
| 2018-07-05 | 103840GE 1 | ND |
| 2018-10-10 | 106344GE 1 | 0.680 ppb |
| 2018-10-23 | 106688GE 1 | 0.650 ppb |
| 2019-01-04 | 108166GE 1 | 0.700 ppb |
| 2019-01-04 | 108167GE 1 | 0.640 ppb |
| 2019-04-04 | 109987GE 1 | ND |
| 2019-04-04 | 109986PPS | ND |
| 2019-07-09 | 112158PPS | 0.540 ppb |
| 2019-07-09 | 112157PPS | 0.590 ppb |
| 2019-10-03 | 114044PPS | ND |
| 2019-10-21 | 114434PPS | ND |
| 2020-01-07 | 115756PPS | ND |
| 2020-01-07 | 115757PPS | ND |
| 2020-04-07 | 117651PPS | ND |
| 2020-04-07 | 117652PPS | 0.600 ppb |
| 2020-07-07 | 119515PPS | ND |
| 2020-07-07 | 119516PPS | 0.900 ppb |
| 2020-10-02 | 121620PPS | ND |
| 2020-10-02 | 121621PPS | 0.600 ppb |
| 2021-01-05 | A123500PPS | ND |
| 2021-01-05 | A123501PPS | ND |
| 2021-04-05 | 125320PPS | 0.600 ppb |
| 2021-04-05 | 125321PPS | 0.600 ppb |
| 2021-07-02 | 127276PPS | 0.700 ppb |
| 2021-07-21 | 127711PPS | 0.700 ppb |
| 2021-10-29 | 129799PPS | 0.550 ppb |
| 2021-10-29 | 129800PPS | 0.640 ppb |
| 2022-01-06 | 130960PPS | 0.690 ppb |
| 2022-04-04 | 132679PPS | 0.590 ppb |
| 2022-04-04 | 132680PPS | 0.610 ppb |
| 2022-07-01 | 134516PPS | 0.840 ppb |
| 2022-07-01 | 134515PPS | 0.680 ppb |
| 2022-10-20 | Z136826PPS | 0.500 ppb |
| 2022-10-20 | Z136827PPS | ND |
| 2022-10-20 | 136826PPS | 0.500 ppb |
| 2022-10-20 | 136827PPS | ND |
| 2023-01-06 | 138071PPS | ND |
| 2023-01-06 | 138072PPS | ND |
| 2023-04-03 | 139671ZPPS | 0.530 ppb |
| 2023-04-03 | 139672ZPPS | 0.550 ppb |
| 2023-07-06 | 141521PPS | 0.600 ppb |
| 2023-10-02 | A143262PPS | ND |
| 2023-10-23 | 143651PPS | 0.550 ppb |