Bromoform
West Point, City of
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 | 1.25 ppb | 3 | 3 | 1.07 ppb - 1.59 ppb |
| 2019 | 0.490 ppb | 3 | 2 | ND - 0.810 ppb |
| 2020 | 1.19 ppb | 3 | 2 | ND - 2.46 ppb |
| 2021 | 0.853 ppb | 3 | 3 | 0.680 ppb - 1.01 ppb |
| 2022 | 0.676 ppb | 5 | 4 | ND - 0.990 ppb |
| 2023 | 0.780 ppb | 8 | 8 | 0.630 ppb - 0.910 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 |
|---|---|---|
| 2018-01-16 | 530842 | 1.07 ppb |
| 2018-09-24 | 571941 | 1.10 ppb |
| 2018-09-24 | 571940 | 1.59 ppb |
| 2019-01-14 | 592531 | ND |
| 2019-09-03 | 630428 | 0.660 ppb |
| 2019-09-03 | 630429 | 0.810 ppb |
| 2020-02-10 | 650614 | 2.46 ppb |
| 2020-09-14 | 689975 | 1.10 ppb |
| 2020-09-14 | 689974 | ND |
| 2021-01-19 | 713005 | 0.680 ppb |
| 2021-09-21 | 764409 | 0.870 ppb |
| 2021-09-21 | 764408 | 1.01 ppb |
| 2022-01-18 | 778908 | ND |
| 2022-09-12 | 822877 | 0.750 ppb |
| 2022-09-12 | 822878 | 0.990 ppb |
| 2022-12-05 | 835790 | 0.820 ppb |
| 2022-12-05 | 835789 | 0.820 ppb |
| 2023-03-06 | 851386 | 0.690 ppb |
| 2023-03-06 | 851387 | 0.630 ppb |
| 2023-06-19 | 864105 | 0.710 ppb |
| 2023-06-19 | 864104 | 0.780 ppb |
| 2023-09-06 | 879906 | 0.880 ppb |
| 2023-09-06 | 879907 | 0.910 ppb |
| 2023-12-05 | 891492 | 0.770 ppb |
| 2023-12-05 | 891491 | 0.870 ppb |