Bromodichloromethane
Cassadaga Village
Bromodichloromethane, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Bromodichloromethane 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 | 4 | 4 | 0.600 ppb - 2.40 ppb |
| 2019 | N/A | 0 | 0 | N/A |
| 2020 | 7.25 ppb | 4 | 4 | 4.80 ppb - 11.1 ppb |
| 2021 | 3.97 ppb | 6 | 6 | 2.60 ppb - 5.40 ppb |
| 2022 | ND | 1 | 0 | ND |
| 2023 | 5.80 ppb | 1 | 1 | 5.80 ppb |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
EWG Health Guideline: 0.06 ppb
The EWG Health Guideline of 0.06 ppb for bromodichloromethane was 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 and harm to fetal growth and development.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2018-07-16 | POCS 2018 CASS WL4 | 0.900 ppb |
| 2018-07-16 | POCS 2018 CASS WL1 | 0.600 ppb |
| 2018-07-16 | POCS 2018 CASS WL5 | 2.40 ppb |
| 2018-10-09 | POCS 2018 CASS RESAM | 1.10 ppb |
| 2020-08-18 | 20 DBPS CASS AMES | 11.1 ppb |
| 2020-08-18 | 20 DBPS CASS BARD | 7.90 ppb |
| 2020-11-18 | Q420 DBPS BARD RD | 5.20 ppb |
| 2020-11-18 | Q420 DBPS CASS AMES | 4.80 ppb |
| 2021-03-31 | Q1 21 DBP CASS BARD | 5.40 ppb |
| 2021-03-31 | Q1 21 DBP CASS AMES | 3.00 ppb |
| 2021-06-02 | Q2 21 DBP CASS BARD | 2.60 ppb |
| 2021-06-02 | Q2 21 DBP CASS AMES | 2.70 ppb |
| 2021-11-17 | Q4 21 DBP CASS BARD | 4.90 ppb |
| 2021-11-17 | Q4 21 DBP CASS AMES | 5.20 ppb |
| 2022-03-16 | POCS 22 CASS WL1 | ND |
| 2023-08-23 | Q3 23 DBP CASS BARD | 5.80 ppb |