Bromate
New Britain Water Department
Bromate is a carcinogenic disinfection byproduct formed when source waters containing bromide are treated with ozonation or sodium hypochlorite. Studies of laboratory animals show that bromate damages DNA and causes cancer in multiple organs. 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 | ND | 5 | 0 | ND |
| 2019 | ND | 3 | 0 | ND |
| 2020 | ND | 2 | 0 | ND |
| 2021 | ND | 3 | 0 | ND |
| 2022 | ND | 5 | 0 | ND |
| 2023 | ND | 4 | 0 | ND |
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 bromate was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer.
EPA Maximum Contaminant
Level (MCL): 10 ppb
The legal limit for bromate, established in 1998, was based on analytical detection limits at the time that the standard was set. This limit may not fully protect against the risk of cancer due to bromate exposure.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2018-01-10 | DBP 200483638 | ND |
| 2018-04-11 | DBP 200491856 | ND |
| 2018-05-07 | DBP 200493796 | ND |
| 2018-08-21 | DBP 200502897 | ND |
| 2018-11-08 | DBP 200512122 | ND |
| 2019-02-20 | DBP 200522291 | ND |
| 2019-05-15 | DBP 200532211 | ND |
| 2019-12-12 | TOC 200560029 | ND |
| 2020-02-05 | TOC 200566672 | ND |
| 2020-05-07 | TOC 200574917 | ND |
| 2021-03-11 | TOC 200609498 | ND |
| 2021-05-11 | TOC 200616513 | ND |
| 2021-08-25 | TOC 200629719 | ND |
| 2022-02-14 | O300145228 300145229 | ND |
| 2022-04-11 | O300168872 300168873 | ND |
| 2022-05-12 | O300182901 300182902 | ND |
| 2022-08-09 | O300227227 300227228 | ND |
| 2022-11-09 | O300271108 300271114 | ND |
| 2023-02-07 | O300306477 300306483 | ND |
| 2023-03-14 | O300320683 300320689 | ND |
| 2023-04-11 | O300331128 300331134 | ND |
| 2023-05-04 | O300345020 300345039 | ND |