Dibromochloromethane
Parkville Water District
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 | 3.14 ppb | 10 | 2 | ND - 16.9 ppb |
| 2019 | ND | 9 | 0 | ND |
| 2020 | 0.203 ppb | 9 | 3 | ND - 0.620 ppb |
| 2021 | 0.276 ppb | 9 | 4 | ND - 0.700 ppb |
| 2022 | 0.244 ppb | 12 | 6 | ND - 0.580 ppb |
| 2023 | 0.0983 ppb | 12 | 3 | ND - 0.550 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 | Result |
|---|---|
| 2018-02-13 | ND |
| 2018-02-13 | ND |
| 2018-06-21 | ND |
| 2018-06-21 | ND |
| 2018-08-28 | ND |
| 2018-08-28 | ND |
| 2018-12-04 | 14.5 ppb |
| 2018-12-04 | 16.9 ppb |
| 2018-12-05 | ND |
| 2018-12-05 | ND |
| 2019-02-12 | ND |
| 2019-02-12 | ND |
| 2019-05-21 | ND |
| 2019-05-21 | ND |
| 2019-08-19 | ND |
| 2019-08-19 | ND |
| 2019-11-21 | ND |
| 2019-11-21 | ND |
| 2019-12-17 | ND |
| 2020-02-13 | ND |
| 2020-02-13 | ND |
| 2020-06-04 | ND |
| 2020-06-04 | 0.620 ppb |
| 2020-08-31 | 0.600 ppb |
| 2020-08-31 | ND |
| 2020-11-24 | ND |
| 2020-11-24 | 0.610 ppb |
| 2020-12-08 | ND |
| 2021-02-09 | ND |
| 2021-02-09 | 0.690 ppb |
| 2021-05-19 | ND |
| 2021-05-19 | ND |
| 2021-08-17 | ND |
| 2021-08-17 | ND |
| 2021-11-16 | 0.700 ppb |
| 2021-11-17 | 0.570 ppb |
| 2021-12-14 | 0.520 ppb |
| 2022-02-08 | ND |
| 2022-02-08 | ND |
| 2022-06-07 | ND |
| 2022-06-07 | 0.580 ppb |
| 2022-08-15 | ND |
| 2022-08-15 | 0.510 ppb |
| 2022-09-22 | 0.470 ppb |
| 2022-09-22 | ND |
| 2022-12-21 | 0.360 ppb |
| 2022-12-21 | ND |
| 2022-12-29 | 0.490 ppb |
| 2022-12-29 | 0.520 ppb |
| 2023-02-24 | 0.310 ppb |
| 2023-02-24 | 0.550 ppb |
| 2023-03-30 | ND |
| 2023-05-17 | ND |
| 2023-05-17 | 0.320 ppb |
| 2023-06-21 | ND |
| 2023-08-22 | ND |
| 2023-08-22 | ND |
| 2023-09-20 | ND |
| 2023-09-20 | ND |
| 2023-11-07 | ND |
| 2023-11-07 | ND |