Bromoform
South Central Regional Water District North Burleigh
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 | 0.665 ppb | 8 | 7 | ND - 1.41 ppb |
| 2019 | 0.0700 ppb | 8 | 1 | ND - 0.560 ppb |
| 2020 | 0.0975 ppb | 8 | 1 | ND - 0.780 ppb |
| 2021 | 0.485 ppb | 8 | 6 | ND - 0.770 ppb |
| 2022 | 1.45 ppb | 14 | 14 | 0.710 ppb - 2.60 ppb |
| 2023 | 1.06 ppb | 16 | 15 | ND - 2.06 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 |
|---|---|---|
| 2018-02-12 | 18-S176 | 0.860 ppb |
| 2018-02-12 | 18-S177 | 1.41 ppb |
| 2018-05-16 | 18-S749 | 0.590 ppb |
| 2018-05-16 | 18-S750 | 0.590 ppb |
| 2018-08-21 | 18-S1767 | 0.670 ppb |
| 2018-08-21 | 18-S1768 | 0.620 ppb |
| 2018-11-13 | 18-S2336 | 0.580 ppb |
| 2018-11-13 | 18-S2335 | ND |
| 2019-02-12 | 19-S146 | 0.560 ppb |
| 2019-02-12 | 19-S145 | ND |
| 2019-05-14 | 19-S604 | ND |
| 2019-05-14 | 19-S603 | ND |
| 2019-08-20 | 19-S1728 | ND |
| 2019-08-20 | 19-S1729 | ND |
| 2019-11-12 | 19-S2394 | ND |
| 2019-11-12 | 19-S2393 | ND |
| 2020-02-10 | 361120 | ND |
| 2020-02-10 | 361121 | ND |
| 2020-05-11 | 364172 | ND |
| 2020-05-11 | 364174 | ND |
| 2020-08-11 | 370158 | ND |
| 2020-08-11 | 370157 | ND |
| 2020-11-10 | 373115 | ND |
| 2020-11-10 | 373114 | 0.780 ppb |
| 2021-02-09 | 376169 | 0.570 ppb |
| 2021-02-09 | 376170 | 0.700 ppb |
| 2021-05-11 | 380334 | 0.510 ppb |
| 2021-05-11 | 380335 | ND |
| 2021-08-09 | 384194 | 0.670 ppb |
| 2021-08-09 | 384195 | 0.770 ppb |
| 2021-11-09 | 388557 | ND |
| 2021-11-09 | 388571 | 0.660 ppb |
| 2022-02-07 | 392054 | 0.710 ppb |
| 2022-02-07 | 392053 | 0.810 ppb |
| 2022-05-09 | 395303 | 2.15 ppb |
| 2022-05-09 | 395302 | 1.92 ppb |
| 2022-05-09 | 395301 | 2.60 ppb |
| 2022-05-09 | 395300 | 1.54 ppb |
| 2022-08-09 | 399534 | 1.92 ppb |
| 2022-08-09 | 399535 | 1.44 ppb |
| 2022-08-09 | 399532 | 1.60 ppb |
| 2022-08-09 | 399533 | 1.69 ppb |
| 2022-11-08 | 403898 | 0.960 ppb |
| 2022-11-08 | 403900 | 1.10 ppb |
| 2022-11-08 | 403901 | 1.08 ppb |
| 2022-11-08 | 403899 | 0.840 ppb |
| 2023-02-06 | 407175 | ND |
| 2023-02-06 | 407174 | 0.590 ppb |
| 2023-02-06 | 407177 | 1.000 ppb |
| 2023-02-06 | 407176 | 0.570 ppb |
| 2023-05-08 | 411115 | 0.870 ppb |
| 2023-05-08 | 411113 | 0.600 ppb |
| 2023-05-08 | 411116 | 0.640 ppb |
| 2023-05-08 | 411114 | 0.650 ppb |
| 2023-08-07 | 415006 | 1.49 ppb |
| 2023-08-07 | 415004 | 2.06 ppb |
| 2023-08-07 | 415007 | 1.57 ppb |
| 2023-08-07 | 415005 | 1.90 ppb |
| 2023-11-07 | 419038 | 0.840 ppb |
| 2023-11-07 | 419039 | 1.36 ppb |
| 2023-11-07 | 419036 | 1.52 ppb |
| 2023-11-07 | 419037 | 1.29 ppb |