Bromoform
Fairfield Water Department
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 | 0.299 ppb | 8 | 2 | ND - 1.22 ppb |
| 2019 | 0.288 ppb | 8 | 2 | ND - 1.31 ppb |
| 2020 | 0.345 ppb | 8 | 3 | ND - 1.20 ppb |
| 2021 | 0.509 ppb | 8 | 4 | ND - 1.70 ppb |
| 2022 | 0.749 ppb | 8 | 4 | ND - 1.93 ppb |
| 2023 | 0.389 ppb | 8 | 4 | ND - 0.840 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 |
|---|---|---|
| 2018-02-08 | AC07167TH | 1.17 ppb |
| 2018-02-08 | AC07168TH | 1.22 ppb |
| 2018-05-21 | AC11152TH | ND |
| 2018-05-21 | AC11153TH | ND |
| 2018-08-16 | AC14946TH | ND |
| 2018-08-16 | AC14945TH | ND |
| 2018-11-08 | AC18573TH | ND |
| 2018-11-08 | AC18572TH | ND |
| 2019-02-06 | AC22276TH | ND |
| 2019-02-06 | AC22275TH | ND |
| 2019-05-09 | AC26299TH | ND |
| 2019-05-09 | AC26298TH | ND |
| 2019-08-07 | AC30358TH | 0.990 ppb |
| 2019-08-07 | AC30359TH | 1.31 ppb |
| 2019-11-07 | AC34939TH | ND |
| 2019-11-07 | AC34938TH | ND |
| 2020-02-06 | AC38720TH | ND |
| 2020-02-06 | AC38719TH | ND |
| 2020-05-07 | AC42330TH | ND |
| 2020-05-07 | AC42329TH | ND |
| 2020-08-06 | AC46059TH | 0.731 ppb |
| 2020-08-06 | AC46058TH | 1.20 ppb |
| 2020-11-05 | AC49661TH | ND |
| 2020-11-05 | AC49660TH | 0.825 ppb |
| 2021-02-08 | AC53112TH | ND |
| 2021-02-08 | AC53111TH | ND |
| 2021-05-07 | AC56585TH | 0.511 ppb |
| 2021-05-07 | AC56584TH | 0.577 ppb |
| 2021-08-16 | AC60847TH | 1.70 ppb |
| 2021-08-16 | AC60846TH | 1.28 ppb |
| 2021-11-04 | AC64867TH | ND |
| 2021-11-04 | AC64866TH | ND |
| 2022-02-03 | AC68254TH | ND |
| 2022-02-03 | AC68253TH | ND |
| 2022-05-05 | AC71787TH | ND |
| 2022-05-05 | AC71786TH | ND |
| 2022-08-04 | AC75694TH | 1.93 ppb |
| 2022-08-04 | AC75693TH | 1.90 ppb |
| 2022-11-03 | AC79382TH | 1.25 ppb |
| 2022-11-03 | AC79381TH | 0.910 ppb |
| 2023-02-01 | AC83324TH | ND |
| 2023-02-01 | AC83323TH | ND |
| 2023-05-04 | AC87271TH | ND |
| 2023-05-04 | AC87270TH | ND |
| 2023-08-03 | AC91143TH | 0.690 ppb |
| 2023-08-03 | AC91142TH | 0.750 ppb |
| 2023-11-02 | AC95121TH | 0.830 ppb |
| 2023-11-02 | AC95120TH | 0.840 ppb |