Bromodichloromethane
Pittsburgh Water & Sewer Authority
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 | 14.3 ppb | 48 | 48 | 5.00 ppb - 32.5 ppb |
| 2019 | 15.1 ppb | 48 | 48 | 5.86 ppb - 24.3 ppb |
| 2020 | 17.6 ppb | 48 | 48 | 4.61 ppb - 37.3 ppb |
| 2021 | 14.7 ppb | 51 | 51 | 5.06 ppb - 22.2 ppb |
| 2022 | 14.2 ppb | 50 | 50 | 6.00 ppb - 29.5 ppb |
| 2023 | 15.2 ppb | 48 | 48 | 4.46 ppb - 31.9 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 |
|---|---|---|
| 2018-02-02 | 02180209 | 8.00 ppb |
| 2018-02-02 | 02180205 | 7.00 ppb |
| 2018-02-02 | 02180211 | 7.00 ppb |
| 2018-02-02 | 02180214 | 7.00 ppb |
| 2018-02-02 | 02180203 | 7.00 ppb |
| 2018-02-02 | 02180208 | 5.00 ppb |
| 2018-02-02 | 02180207 | 7.00 ppb |
| 2018-02-02 | 02180204 | 6.00 ppb |
| 2018-02-02 | 02180213 | 8.00 ppb |
| 2018-02-02 | 02180210 | 7.00 ppb |
| 2018-02-02 | 02180206 | 6.00 ppb |
| 2018-02-02 | 02180212 | 7.00 ppb |
| 2018-05-01 | 18E0088-04 | 9.66 ppb |
| 2018-05-01 | 18E0088-02 | 9.33 ppb |
| 2018-05-01 | 18E0088-07 | 8.64 ppb |
| 2018-05-01 | 18E0088-03 | 7.04 ppb |
| 2018-05-01 | 18E0088-01 | 9.53 ppb |
| 2018-05-01 | 18E0088-06 | 9.76 ppb |
| 2018-05-01 | 18E0088-05 | 8.70 ppb |
| 2018-05-02 | 18E0264-05 | 9.19 ppb |
| 2018-05-02 | 18E0264-01 | 8.97 ppb |
| 2018-05-02 | 18E0264-03 | 9.61 ppb |
| 2018-05-02 | 18E0264-04 | 9.44 ppb |
| 2018-05-02 | 18E0264-02 | 8.64 ppb |
| 2018-08-01 | 18H0210-04 | 14.6 ppb |
| 2018-08-01 | 18H0210-02 | 32.5 ppb |
| 2018-08-01 | 18H0210-03 | 19.9 ppb |
| 2018-08-01 | 18H0210-01 | 23.2 ppb |
| 2018-08-01 | 18H0210-05 | 32.5 ppb |
| 2018-08-01 | 18H0210-06 | 28.3 ppb |
| 2018-08-02 | 18H0572-04 | 25.2 ppb |
| 2018-08-02 | 18H0572-06 | 29.0 ppb |
| 2018-08-02 | 18H0572-01 | 29.3 ppb |
| 2018-08-02 | 18H0572-03 | 31.2 ppb |
| 2018-08-02 | 18H0572-05 | 30.7 ppb |
| 2018-08-02 | 18H0572-02 | 27.8 ppb |
| 2018-11-01 | 18K0426-04 | 8.02 ppb |
| 2018-11-01 | 18K0426-06 | 14.3 ppb |
| 2018-11-01 | 18K0426-03 | 9.19 ppb |
| 2018-11-01 | 18K0426-01 | 9.80 ppb |
| 2018-11-01 | 18K0426-02 | 15.7 ppb |
| 2018-11-01 | 18K0426-05 | 15.4 ppb |
| 2018-11-02 | 18K0627-02 | 16.5 ppb |
| 2018-11-02 | 18K0627-05 | 13.4 ppb |
| 2018-11-02 | 18K0627-01 | 16.2 ppb |
| 2018-11-02 | 18K0627-03 | 16.6 ppb |
| 2018-11-02 | 18K0627-06 | 18.6 ppb |
| 2018-11-02 | 18K0627-04 | 16.1 ppb |
| 2019-02-01 | 19B0579-01 | 9.13 ppb |
| 2019-02-01 | 19B0579-02 | 8.48 ppb |
| 2019-02-01 | 19B0579-03 | 8.33 ppb |
| 2019-02-01 | 19B0579-04 | 9.24 ppb |
| 2019-02-01 | 19B0579-05 | 7.93 ppb |
| 2019-02-01 | 19B0579-06 | 5.86 ppb |
| 2019-02-01 | 19B0579-07 | 9.04 ppb |
| 2019-02-01 | 19B0579-08 | 6.18 ppb |
| 2019-02-01 | 19B0579-09 | 9.62 ppb |
| 2019-02-01 | 19B0579-10 | 7.62 ppb |
| 2019-02-01 | 19B0579-11 | 8.49 ppb |
| 2019-02-01 | 19B0579-12 | 8.64 ppb |
| 2019-05-01 | 19E0821-02 | 12.2 ppb |
| 2019-05-01 | 19E0821-06 | 11.4 ppb |
| 2019-05-01 | 19E0821-03 | 9.13 ppb |
| 2019-05-01 | 19E0821-01 | 10.8 ppb |
| 2019-05-01 | 19E0821-05 | 11.8 ppb |
| 2019-05-01 | 19E0821-04 | 11.2 ppb |
| 2019-05-02 | 19E0870-03 | 11.3 ppb |
| 2019-05-02 | 19E0870-02 | 11.5 ppb |
| 2019-05-02 | 19E0870-01 | 10.9 ppb |
| 2019-05-03 | 19E1121-02 | 12.0 ppb |
| 2019-05-03 | 19E1121-01 | 11.3 ppb |
| 2019-05-03 | 19E1121-03 | 11.3 ppb |
| 2019-08-01 | 19H1062-03 | 20.4 ppb |
| 2019-08-01 | 19H1062-06 | 22.7 ppb |
| 2019-08-01 | 19H1062-02 | 18.5 ppb |
| 2019-08-01 | 19H1062-01 | 21.5 ppb |
| 2019-08-01 | 19H1062-04 | 23.1 ppb |
| 2019-08-01 | 19H1062-05 | 22.4 ppb |
| 2019-08-02 | 19H1096-02 | 23.1 ppb |
| 2019-08-02 | 19H1096-05 | 19.4 ppb |
| 2019-08-02 | 19H1096-01 | 23.4 ppb |
| 2019-08-02 | 19H1096-04 | 24.2 ppb |
| 2019-08-02 | 19H1096-06 | 24.3 ppb |
| 2019-08-02 | 19H1096-03 | 23.5 ppb |
| 2019-11-01 | 19K0944-03 | 11.5 ppb |
| 2019-11-01 | 19K0946-02 | 20.8 ppb |
| 2019-11-01 | 19K0944-04 | 17.7 ppb |
| 2019-11-01 | 19K0944-06 | 20.9 ppb |
| 2019-11-01 | 19K0944-01 | 19.5 ppb |
| 2019-11-01 | 19K0946-04 | 12.7 ppb |
| 2019-11-01 | 19K0944-02 | 21.3 ppb |
| 2019-11-01 | 19K0946-01 | 16.9 ppb |
| 2019-11-01 | 19K0946-06 | 23.8 ppb |
| 2019-11-01 | 19K0946-05 | 19.5 ppb |
| 2019-11-01 | 19K0946-03 | 20.8 ppb |
| 2019-11-01 | 19K0944-05 | 21.2 ppb |
| 2020-02-03 | 6.91 ppb | |
| 2020-02-03 | 5.89 ppb | |
| 2020-02-03 | 6.49 ppb | |
| 2020-02-03 | 6.79 ppb | |
| 2020-02-03 | 6.15 ppb | |
| 2020-02-03 | 5.38 ppb | |
| 2020-02-03 | 6.86 ppb | |
| 2020-02-03 | 5.54 ppb | |
| 2020-02-03 | 7.57 ppb | |
| 2020-02-03 | 6.23 ppb | |
| 2020-02-03 | 6.33 ppb | |
| 2020-02-03 | 6.53 ppb | |
| 2020-05-01 | 4.61 ppb | |
| 2020-05-01 | 8.75 ppb | |
| 2020-05-01 | 7.90 ppb | |
| 2020-05-01 | 9.28 ppb | |
| 2020-05-01 | 9.08 ppb | |
| 2020-05-01 | 8.26 ppb | |
| 2020-05-01 | 9.29 ppb | |
| 2020-05-01 | 9.60 ppb | |
| 2020-05-01 | 9.78 ppb | |
| 2020-05-01 | 9.31 ppb | |
| 2020-05-01 | 9.07 ppb | |
| 2020-05-01 | 8.64 ppb | |
| 2020-07-30 | 36.8 ppb | |
| 2020-07-30 | 29.4 ppb | |
| 2020-07-31 | 24.6 ppb | |
| 2020-07-31 | 31.6 ppb | |
| 2020-07-31 | 23.8 ppb | |
| 2020-07-31 | 30.1 ppb | |
| 2020-07-31 | 34.1 ppb | |
| 2020-07-31 | 30.5 ppb | |
| 2020-08-03 | 37.3 ppb | |
| 2020-08-03 | 36.5 ppb | |
| 2020-08-03 | 37.0 ppb | |
| 2020-08-03 | 32.8 ppb | |
| 2020-11-02 | 25.2 ppb | |
| 2020-11-02 | 21.2 ppb | |
| 2020-11-02 | 19.0 ppb | |
| 2020-11-02 | 22.9 ppb | |
| 2020-11-02 | 23.8 ppb | |
| 2020-11-02 | 14.8 ppb | |
| 2020-11-02 | 25.3 ppb | |
| 2020-11-02 | 19.6 ppb | |
| 2020-11-02 | 28.5 ppb | |
| 2020-11-02 | 22.4 ppb | |
| 2020-11-02 | 21.3 ppb | |
| 2020-11-02 | 36.4 ppb | |
| 2021-02-01 | 7.53 ppb | |
| 2021-02-01 | 7.75 ppb | |
| 2021-02-01 | 5.06 ppb | |
| 2021-02-01 | 7.05 ppb | |
| 2021-02-01 | 6.85 ppb | |
| 2021-02-02 | 8.37 ppb | |
| 2021-02-02 | 6.95 ppb | |
| 2021-02-02 | 7.80 ppb | |
| 2021-02-02 | 7.59 ppb | |
| 2021-02-02 | 6.92 ppb | |
| 2021-02-02 | 9.08 ppb | |
| 2021-02-02 | 6.24 ppb | |
| 2021-04-29 | 14.5 ppb | |
| 2021-04-29 | 15.0 ppb | |
| 2021-04-29 | 16.3 ppb | |
| 2021-04-29 | 16.4 ppb | |
| 2021-04-29 | 13.6 ppb | |
| 2021-04-29 | 12.7 ppb | |
| 2021-04-29 | 16.1 ppb | |
| 2021-04-30 | 15.1 ppb | |
| 2021-04-30 | 16.3 ppb | |
| 2021-04-30 | 16.8 ppb | |
| 2021-04-30 | 15.1 ppb | |
| 2021-04-30 | 15.6 ppb | |
| 2021-07-30 | 19.5 ppb | |
| 2021-07-30 | 19.8 ppb | |
| 2021-07-30 | 18.4 ppb | |
| 2021-07-30 | 19.2 ppb | |
| 2021-08-02 | 22.2 ppb | |
| 2021-08-02 | 17.2 ppb | |
| 2021-08-02 | 20.7 ppb | |
| 2021-08-02 | 19.1 ppb | |
| 2021-08-02 | 20.8 ppb | |
| 2021-08-02 | 19.0 ppb | |
| 2021-08-02 | 21.0 ppb | |
| 2021-08-03 | 18.7 ppb | |
| 2021-08-13 | 20.7 ppb | |
| 2021-11-01 | 10.7 ppb | |
| 2021-11-01 | 16.4 ppb | |
| 2021-11-01 | 13.2 ppb | |
| 2021-11-01 | 19.8 ppb | |
| 2021-11-01 | 19.1 ppb | |
| 2021-11-02 | 13.4 ppb | |
| 2021-11-02 | 15.9 ppb | |
| 2021-11-02 | 16.7 ppb | |
| 2021-11-02 | 11.1 ppb | |
| 2021-11-02 | 18.1 ppb | |
| 2021-11-02 | 16.0 ppb | |
| 2021-11-02 | 15.8 ppb | |
| 2021-11-05 | 19.6 ppb | |
| 2021-11-05 | 16.6 ppb | |
| 2022-02-01 | 7.16 ppb | |
| 2022-02-01 | 6.58 ppb | |
| 2022-02-01 | 6.80 ppb | |
| 2022-02-01 | 8.11 ppb | |
| 2022-02-01 | 6.65 ppb | |
| 2022-02-01 | 6.54 ppb | |
| 2022-02-01 | 8.15 ppb | |
| 2022-02-01 | 7.28 ppb | |
| 2022-02-01 | 8.97 ppb | |
| 2022-02-01 | 6.55 ppb | |
| 2022-02-01 | 7.28 ppb | |
| 2022-02-01 | 6.79 ppb | |
| 2022-05-02 | 6.00 ppb | |
| 2022-05-02 | 8.25 ppb | |
| 2022-05-02 | 7.62 ppb | |
| 2022-05-02 | 8.15 ppb | |
| 2022-05-02 | 8.58 ppb | |
| 2022-05-02 | 8.21 ppb | |
| 2022-05-02 | 8.07 ppb | |
| 2022-05-02 | 8.54 ppb | |
| 2022-05-02 | 8.72 ppb | |
| 2022-05-02 | 8.37 ppb | |
| 2022-05-02 | 8.66 ppb | |
| 2022-05-03 | 8.22 ppb | |
| 2022-08-01 | 24.3 ppb | |
| 2022-08-01 | 27.0 ppb | |
| 2022-08-01 | 29.5 ppb | |
| 2022-08-01 | 20.9 ppb | |
| 2022-08-01 | 23.4 ppb | |
| 2022-08-01 | 28.0 ppb | |
| 2022-08-01 | 26.1 ppb | |
| 2022-08-01 | 27.0 ppb | |
| 2022-08-01 | 25.7 ppb | |
| 2022-08-01 | 25.1 ppb | |
| 2022-08-02 | 11.7 ppb | |
| 2022-08-02 | 26.0 ppb | |
| 2022-08-22 | 11.5 ppb | |
| 2022-08-23 | 29.5 ppb | |
| 2022-11-01 | 8.77 ppb | |
| 2022-11-01 | 17.2 ppb | |
| 2022-11-01 | 15.2 ppb | |
| 2022-11-01 | 18.7 ppb | |
| 2022-11-01 | 17.6 ppb | |
| 2022-11-01 | 14.7 ppb | |
| 2022-11-01 | 17.1 ppb | |
| 2022-11-01 | 14.6 ppb | |
| 2022-11-01 | 17.6 ppb | |
| 2022-11-01 | 17.6 ppb | |
| 2022-11-01 | 14.2 ppb | |
| 2022-11-01 | 16.0 ppb | |
| 2023-02-02 | 5.93 ppb | |
| 2023-02-02 | 5.99 ppb | |
| 2023-02-02 | 6.59 ppb | |
| 2023-02-02 | 5.50 ppb | |
| 2023-02-02 | 6.43 ppb | |
| 2023-02-02 | 4.46 ppb | |
| 2023-02-02 | 5.50 ppb | |
| 2023-02-02 | 5.02 ppb | |
| 2023-02-02 | 5.45 ppb | |
| 2023-02-02 | 6.13 ppb | |
| 2023-02-02 | 5.18 ppb | |
| 2023-02-02 | 5.08 ppb | |
| 2023-05-01 | 5.89 ppb | |
| 2023-05-01 | 11.6 ppb | |
| 2023-05-01 | 11.6 ppb | |
| 2023-05-01 | 11.3 ppb | |
| 2023-05-01 | 11.4 ppb | |
| 2023-05-01 | 11.2 ppb | |
| 2023-05-01 | 11.2 ppb | |
| 2023-05-01 | 11.2 ppb | |
| 2023-05-01 | 12.0 ppb | |
| 2023-05-01 | 11.3 ppb | |
| 2023-05-01 | 11.0 ppb | |
| 2023-05-01 | 11.6 ppb | |
| 2023-08-01 | 10.3 ppb | |
| 2023-08-01 | 31.2 ppb | |
| 2023-08-01 | 26.6 ppb | |
| 2023-08-01 | 29.3 ppb | |
| 2023-08-01 | 30.0 ppb | |
| 2023-08-01 | 21.7 ppb | |
| 2023-08-01 | 29.8 ppb | |
| 2023-08-01 | 27.7 ppb | |
| 2023-08-01 | 30.9 ppb | |
| 2023-08-01 | 31.9 ppb | |
| 2023-08-01 | 29.3 ppb | |
| 2023-08-01 | 29.1 ppb | |
| 2023-10-30 | 9.49 ppb | |
| 2023-10-30 | 20.0 ppb | |
| 2023-10-30 | 19.0 ppb | |
| 2023-10-30 | 19.8 ppb | |
| 2023-10-30 | 16.1 ppb | |
| 2023-10-30 | 17.4 ppb | |
| 2023-10-31 | 18.0 ppb | |
| 2023-10-31 | 16.8 ppb | |
| 2023-10-31 | 19.1 ppb | |
| 2023-10-31 | 12.8 ppb | |
| 2023-10-31 | 18.4 ppb | |
| 2023-10-31 | 18.1 ppb |