Bromoform
Connecticut Water Company - Amston Lake 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 | 0.124 ppb | 5 | 1 | ND - 0.620 ppb |
| 2019 | 0.325 ppb | 4 | 1 | ND - 1.30 ppb |
| 2020 | 0.450 ppb | 2 | 1 | ND - 0.900 ppb |
| 2021 | ND | 2 | 0 | ND |
| 2022 | 0.777 ppb | 3 | 2 | ND - 1.50 ppb |
| 2023 | 0.485 ppb | 2 | 1 | ND - 0.970 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 |
|---|---|---|
| 2018-01-19 | BZ75818VOC1 | ND |
| 2018-04-09 | CA16127VOC1 | ND |
| 2018-07-23 | CA95518 | ND |
| 2018-08-13 | CB09779 | 0.620 ppb |
| 2018-11-15 | VOC1 200512952 | ND |
| 2019-02-19 | VOC1 200522111 | ND |
| 2019-02-19 | VOC1 200522112 | ND |
| 2019-04-08 | VOC1 200527488 | ND |
| 2019-08-26 | DBP 200546238 | 1.30 ppb |
| 2020-08-14 | DBP 200586774 | 0.900 ppb |
| 2020-09-21 | VOC1 200590982 | ND |
| 2021-01-06 | VOC1 200602955 | ND |
| 2021-08-16 | DBP 200628739 | ND |
| 2022-08-12 | CM04227 | 1.50 ppb |
| 2022-09-23 | CM40531 | 0.830 ppb |
| 2022-09-23 | CM40528 | ND |
| 2023-08-16 | CO76119 | 0.970 ppb |
| 2023-10-24 | CP33072 | ND |