Bromoform
Connecticut Water Company - Hebron Center Division
Bromoform, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Bromoform 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 | 0.275 ppb | 2 | 1 | ND - 0.550 ppb |
| 2019 | 0.650 ppb | 2 | 2 | 0.500 ppb - 0.800 ppb |
| 2020 | 0.500 ppb | 2 | 1 | ND - 1.000 ppb |
| 2021 | 0.467 ppb | 3 | 2 | ND - 0.900 ppb |
| 2022 | 0.144 ppb | 5 | 1 | ND - 0.720 ppb |
| 2023 | 0.202 ppb | 6 | 2 | ND - 0.670 ppb |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
EWG Health Guideline: 0.5 ppb
The EWG Health Guideline of 0.5 ppb for bromoform is 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, harm to reproduction and child development, and change to fetal growth and development .
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2018-04-09 | CA16134VOC1 | ND |
| 2018-08-20 | CB14584 | 0.550 ppb |
| 2019-02-11 | VOC1 200521212 | 0.500 ppb |
| 2019-08-07 | DBP 200543766 | 0.800 ppb |
| 2020-08-21 | DBP 200587595 | 1.000 ppb |
| 2020-09-21 | VOC1 200591010 | ND |
| 2021-08-18 | DBP 200629178 | 0.900 ppb |
| 2021-08-31 | 300048791 300048800 | ND |
| 2021-10-25 | V300088205 300088206 | 0.500 ppb |
| 2022-01-13 | CK16254 | ND |
| 2022-04-21 | CL13693 | ND |
| 2022-07-07 | CL72297 | ND |
| 2022-08-18 | CM08954 | 0.720 ppb |
| 2022-10-18 | CM65668 | ND |
| 2023-01-12 | CN22972 | ND |
| 2023-04-17 | CN85298 | 0.540 ppb |
| 2023-08-15 | CO75345 | ND |
| 2023-08-21 | CO79325 | 0.670 ppb |
| 2023-10-17 | CP28039 | ND |
| 2023-10-24 | CP33075 | ND |