Bromoform
Cottages At Troutburg
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 | 0.590 ppb | 1 | 1 | 0.590 ppb |
| 2019 | 0.770 ppb | 2 | 2 | 0.700 ppb - 0.840 ppb |
| 2020 | 0.348 ppb | 4 | 2 | ND - 0.750 ppb |
| 2021 | 0.298 ppb | 4 | 2 | ND - 0.640 ppb |
| 2022 | 0.158 ppb | 4 | 1 | ND - 0.630 ppb |
| 2023 | 0.125 ppb | 4 | 1 | ND - 0.500 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 |
|---|---|---|
| 2018-08-22 | 1814462-003 | 0.590 ppb |
| 2019-08-21 | 1914054-001 | 0.840 ppb |
| 2019-11-20 | 1919515-01 | 0.700 ppb |
| 2020-02-19 | 2002546-001 | ND |
| 2020-05-20 | 2007169-001 | ND |
| 2020-08-19 | 2013491-001 | 0.750 ppb |
| 2020-11-18 | 2019131-001 | 0.640 ppb |
| 2021-02-17 | 2102310-001 | ND |
| 2021-05-19 | 2107434-001 | ND |
| 2021-08-18 | 2113843-001 | 0.640 ppb |
| 2021-11-17 | 2119672-001 | 0.550 ppb |
| 2022-02-16 | 2202272-001 | ND |
| 2022-05-18 | 2207198-001 | ND |
| 2022-08-17 | 2213219-001 | ND |
| 2022-11-16 | 2218744-001 | 0.630 ppb |
| 2023-02-15 | 2302231-001 | ND |
| 2023-05-17 | 2306906-001 | ND |
| 2023-08-16 | 2312499-001 | 0.500 ppb |
| 2023-11-17 | 2317827-001 | ND |