Bromoform
North East Central Public Water District
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 | 0.413 ppb | 8 | 4 | ND - 1.11 ppb |
| 2019 | 0.184 ppb | 8 | 2 | ND - 0.831 ppb |
| 2020 | 0.503 ppb | 8 | 4 | ND - 1.05 ppb |
| 2021 | 0.808 ppb | 8 | 8 | 0.569 ppb - 1.22 ppb |
| 2022 | 0.598 ppb | 8 | 6 | ND - 1.10 ppb |
| 2023 | 0.715 ppb | 8 | 8 | 0.588 ppb - 0.849 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 |
|---|---|---|
| 2018-02-06 | 8020973-01 | ND |
| 2018-02-06 | 8020973-02 | ND |
| 2018-05-02 | 8050762-01 | ND |
| 2018-05-02 | 8050762-02 | 0.671 ppb |
| 2018-08-02 | 8080648-01 | ND |
| 2018-08-02 | 8080648-02 | 1.11 ppb |
| 2018-11-12 | 8112336-02 | 0.768 ppb |
| 2018-11-12 | 8112336-01 | 0.755 ppb |
| 2019-02-12 | 9022034-02 | 0.640 ppb |
| 2019-02-12 | 9022034-01 | 0.831 ppb |
| 2019-05-08 | 9052144-01 | ND |
| 2019-05-08 | 9052144-02 | ND |
| 2019-08-06 | 9081343-02 | ND |
| 2019-08-06 | 9081343-01 | ND |
| 2019-11-12 | 9112064-02 | ND |
| 2019-11-12 | 9112064-01 | ND |
| 2020-02-10 | 0021796-02 | ND |
| 2020-02-10 | 0021796-01 | ND |
| 2020-05-13 | 0052627-01 | ND |
| 2020-05-13 | 0052627-02 | ND |
| 2020-08-13 | 0083334-02 | 0.989 ppb |
| 2020-08-13 | 0083334-01 | 0.974 ppb |
| 2020-11-17 | 0113572-02 | 1.01 ppb |
| 2020-11-17 | 0113572-01 | 1.05 ppb |
| 2021-02-08 | EB02065-02 | 0.861 ppb |
| 2021-02-08 | EB02065-01 | 0.826 ppb |
| 2021-05-11 | EE02313-01 | 0.604 ppb |
| 2021-05-11 | EE02313-02 | 0.569 ppb |
| 2021-08-18 | EH04585-01 | 0.868 ppb |
| 2021-08-18 | EH04585-02 | 1.22 ppb |
| 2021-11-09 | EK02612-01 | 0.700 ppb |
| 2021-11-09 | EK02612-02 | 0.815 ppb |
| 2022-02-07 | FB01172-02 | 0.664 ppb |
| 2022-02-07 | FB01172-01 | 0.815 ppb |
| 2022-05-09 | FE02200-01 | ND |
| 2022-05-09 | FE02200-02 | ND |
| 2022-08-08 | FH02279-01 | 0.705 ppb |
| 2022-08-08 | FH02279-02 | 0.822 ppb |
| 2022-11-08 | FK02365-01 | 0.676 ppb |
| 2022-11-08 | FK02365-02 | 1.10 ppb |
| 2023-02-07 | GB01825-01 | 0.811 ppb |
| 2023-02-07 | GB01825-02 | 0.849 ppb |
| 2023-05-08 | GE02583-01 | 0.588 ppb |
| 2023-05-08 | GE02583-02 | 0.634 ppb |
| 2023-08-07 | GH02065-01 | 0.701 ppb |
| 2023-08-07 | GH02065-02 | 0.832 ppb |
| 2023-11-13 | GK02723-01 | 0.593 ppb |
| 2023-11-13 | GK02723-02 | 0.715 ppb |