Bromodichloromethane
Bristol Water Department
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 | 6.23 ppb | 36 | 35 | ND - 9.20 ppb |
| 2019 | 5.96 ppb | 36 | 36 | 0.760 ppb - 9.85 ppb |
| 2020 | 6.31 ppb | 36 | 36 | 0.500 ppb - 10.1 ppb |
| 2021 | 6.65 ppb | 36 | 36 | 0.700 ppb - 11.6 ppb |
| 2022 | 5.76 ppb | 40 | 36 | ND - 10.0 ppb |
| 2023 | 5.91 ppb | 36 | 36 | 0.530 ppb - 10.2 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 |
|---|---|---|
| 2018-01-10 | D8A0568-01VOC | 3.70 ppb |
| 2018-01-10 | D8A0568-04VOC | 3.20 ppb |
| 2018-01-10 | D8A0568-03VOC | ND |
| 2018-01-10 | D8A0568-02VOC | 0.700 ppb |
| 2018-02-01 | D8B0050-01VOC | 5.40 ppb |
| 2018-02-01 | D8B0050-02VOC | 5.70 ppb |
| 2018-02-01 | D8B0050-03VOC | 7.30 ppb |
| 2018-02-01 | D8B0050-04VOC | 7.10 ppb |
| 2018-02-01 | D8B0050-05VOC | 9.00 ppb |
| 2018-02-01 | D8B0050-06VOC | 5.30 ppb |
| 2018-02-01 | D8B0050-07VOC | 5.70 ppb |
| 2018-02-01 | D8B0050-08VOC | 5.80 ppb |
| 2018-05-02 | D8E0293-01VOC | 4.90 ppb |
| 2018-05-02 | D8E0293-02VOC | 5.00 ppb |
| 2018-05-02 | D8E0293-03VOC | 7.00 ppb |
| 2018-05-02 | D8E0293-04VOC | 7.40 ppb |
| 2018-05-02 | D8E0293-05VOC | 8.40 ppb |
| 2018-05-02 | D8E0293-06VOC | 5.00 ppb |
| 2018-05-02 | D8E0293-07VOC | 5.30 ppb |
| 2018-05-02 | D8E0293-08VOC | 5.40 ppb |
| 2018-08-03 | D8H0465-01VOC | 8.10 ppb |
| 2018-08-03 | D8H0465-02VOC | 8.10 ppb |
| 2018-08-03 | D8H0465-03VOC | 9.20 ppb |
| 2018-08-03 | D8H0465-04VOC | 8.80 ppb |
| 2018-08-03 | D8H0465-05VOC | 8.70 ppb |
| 2018-08-03 | D8H0465-06VOC | 7.40 ppb |
| 2018-08-03 | D8H0465-07VOC | 7.10 ppb |
| 2018-08-03 | D8H0465-08VOC | 8.00 ppb |
| 2018-11-21 | D8K2218-01VOC | 6.40 ppb |
| 2018-11-21 | D8K2218-02VOC | 6.90 ppb |
| 2018-11-21 | D8K2218-03VOC | 7.20 ppb |
| 2018-11-21 | D8K2218-04VOC | 7.00 ppb |
| 2018-11-21 | D8K2218-05VOC | 6.10 ppb |
| 2018-11-21 | D8K2218-06VOC | 6.00 ppb |
| 2018-11-21 | D8K2218-07VOC | 5.60 ppb |
| 2018-11-21 | D8K2218-08VOC | 6.30 ppb |
| 2019-02-07 | D9B0625-01VOC | 4.92 ppb |
| 2019-02-07 | D9B0625-02VOC | 5.29 ppb |
| 2019-02-07 | D9B0625-03VOC | 6.09 ppb |
| 2019-02-07 | D9B0625-04VOC | 5.77 ppb |
| 2019-02-07 | D9B0625-05VOC | 8.79 ppb |
| 2019-02-07 | D9B0625-06VOC | 4.05 ppb |
| 2019-02-07 | D9B0625-07VOC | 4.56 ppb |
| 2019-02-07 | D9B0625-08VOC | 4.97 ppb |
| 2019-05-16 | D9E1857-01VOC | 5.72 ppb |
| 2019-05-16 | D9E1857-02VOC | 4.91 ppb |
| 2019-05-16 | D9E1857-03VOC | 4.76 ppb |
| 2019-05-16 | D9E1857-04VOC | 5.71 ppb |
| 2019-05-16 | D9E1857-05VOC | 6.62 ppb |
| 2019-05-16 | D9E1857-06VOC | 4.36 ppb |
| 2019-05-16 | D9E1857-07VOC | 4.73 ppb |
| 2019-05-16 | D9E1857-08VOC | 5.49 ppb |
| 2019-08-22 | D9H2728-01VOC | 9.39 ppb |
| 2019-08-22 | D9H2728-02VOC | 8.68 ppb |
| 2019-08-22 | D9H2728-03VOC | 9.73 ppb |
| 2019-08-22 | D9H2728-04VOC | 9.32 ppb |
| 2019-08-22 | D9H2728-05VOC | 8.58 ppb |
| 2019-08-22 | D9H2728-06VOC | 7.44 ppb |
| 2019-08-22 | D9H2728-07VOC | 9.85 ppb |
| 2019-08-22 | D9H2728-08VOC | 8.23 ppb |
| 2019-10-28 | D9J2584-01VOC | 4.64 ppb |
| 2019-10-28 | D9J2584-04VOC | 4.71 ppb |
| 2019-10-28 | D9J2584-03VOC | 0.760 ppb |
| 2019-10-28 | D9J2584-02VOC | 1.96 ppb |
| 2019-11-20 | D9K1863-01VOC | 6.07 ppb |
| 2019-11-20 | D9K1863-02VOC | 6.15 ppb |
| 2019-11-20 | D9K1863-03VOC | 5.55 ppb |
| 2019-11-20 | D9K1863-04VOC | 5.75 ppb |
| 2019-11-20 | D9K1863-05VOC | 4.93 ppb |
| 2019-11-20 | D9K1863-06VOC | 4.69 ppb |
| 2019-11-20 | D9K1863-07VOC | 4.78 ppb |
| 2019-11-20 | D9K1863-08VOC | 6.77 ppb |
| 2020-02-07 | D0B0593-01VOC | 4.86 ppb |
| 2020-02-07 | D0B0593-02VOC | 5.01 ppb |
| 2020-02-07 | D0B0593-03VOC | 4.66 ppb |
| 2020-02-07 | D0B0593-04VOC | 6.61 ppb |
| 2020-02-07 | D0B0593-05VOC | 7.59 ppb |
| 2020-02-07 | D0B0593-06VOC | 3.70 ppb |
| 2020-02-07 | D0B0593-07VOC | 5.59 ppb |
| 2020-02-07 | D0B0593-08VOC | 4.81 ppb |
| 2020-04-15 | D0D1376-01VOC | 4.78 ppb |
| 2020-04-15 | D0D1376-02VOC | 4.83 ppb |
| 2020-04-15 | D0D1376-03VOC | 6.26 ppb |
| 2020-04-15 | D0D1376-04VOC | 6.99 ppb |
| 2020-04-15 | D0D1376-05VOC | 6.01 ppb |
| 2020-04-15 | D0D1376-06VOC | 3.42 ppb |
| 2020-04-15 | D0D1376-07VOC | 6.77 ppb |
| 2020-04-15 | D0D1376-08VOC | 4.87 ppb |
| 2020-08-13 | D0H1367-01VOC | 9.16 ppb |
| 2020-08-13 | D0H1367-02VOC | 9.01 ppb |
| 2020-08-13 | D0H1367-03VOC | 9.16 ppb |
| 2020-08-13 | D0H1367-04VOC | 10.1 ppb |
| 2020-08-13 | D0H1367-05VOC | 10.1 ppb |
| 2020-08-13 | D0H1367-06VOC | 8.19 ppb |
| 2020-08-13 | D0H1367-07VOC | 7.29 ppb |
| 2020-08-13 | D0H1367-08VOC | 8.37 ppb |
| 2020-11-18 | D0K1639-01VOC | 7.67 ppb |
| 2020-11-18 | D0K1639-02VOC | 8.37 ppb |
| 2020-11-18 | D0K1639-03VOC | 7.90 ppb |
| 2020-11-18 | D0K1639-04VOC | 7.28 ppb |
| 2020-11-18 | D0K1639-05VOC | 7.94 ppb |
| 2020-11-18 | D0K1639-06VOC | 4.88 ppb |
| 2020-11-18 | D0K1639-07VOC | 9.00 ppb |
| 2020-11-18 | D0K1639-08VOC | 6.26 ppb |
| 2020-11-19 | D0K1813-01VOC | 4.29 ppb |
| 2020-11-19 | D0K1813-02VOC | 3.74 ppb |
| 2020-11-19 | D0K1813-03VOC | 0.500 ppb |
| 2020-11-19 | D0K1813-04VOC | 1.07 ppb |
| 2021-02-11 | D1B1051-01VOC | 6.81 ppb |
| 2021-02-11 | D1B1051-02VOC | 7.32 ppb |
| 2021-02-11 | D1B1051-03VOC | 6.82 ppb |
| 2021-02-11 | D1B1051-04VOC | 7.77 ppb |
| 2021-02-11 | D1B1051-05VOC | 9.36 ppb |
| 2021-02-11 | D1B1051-06VOC | 4.00 ppb |
| 2021-02-11 | D1B1051-07VOC | 4.95 ppb |
| 2021-02-11 | D1B1051-08VOC | 6.00 ppb |
| 2021-05-12 | D1E1461-01VOC | 5.45 ppb |
| 2021-05-12 | D1E1461-02VOC | 5.73 ppb |
| 2021-05-12 | D1E1461-03VOC | 7.10 ppb |
| 2021-05-12 | D1E1461-04VOC | 7.98 ppb |
| 2021-05-12 | D1E1461-05VOC | 5.15 ppb |
| 2021-05-12 | D1E1461-06VOC | 5.62 ppb |
| 2021-05-12 | D1E1461-07VOC | 5.71 ppb |
| 2021-05-21 | D1E2270-01VOC | 5.95 ppb |
| 2021-08-11 | D1H1184-01VOC | 10.1 ppb |
| 2021-08-11 | D1H1184-02VOC | 11.6 ppb |
| 2021-08-11 | D1H1184-03VOC | 9.98 ppb |
| 2021-08-11 | D1H1184-04VOC | 7.69 ppb |
| 2021-08-11 | D1H1184-05VOC | 7.11 ppb |
| 2021-08-11 | D1H1184-06VOC | 6.04 ppb |
| 2021-08-11 | D1H1184-07VOC | 9.45 ppb |
| 2021-08-11 | D1H1184-08VOC | 8.92 ppb |
| 2021-08-12 | D1H1346-01VOC | 6.77 ppb |
| 2021-08-12 | D1H1346-02VOC | 6.30 ppb |
| 2021-08-12 | D1H1346-03VOC | 0.700 ppb |
| 2021-08-12 | D1H1346-04VOC | 1.72 ppb |
| 2021-11-10 | D1K0958-01VOC | 6.77 ppb |
| 2021-11-10 | D1K0958-02VOC | 7.53 ppb |
| 2021-11-10 | D1K0958-03VOC | 7.30 ppb |
| 2021-11-10 | D1K0958-04VOC | 7.09 ppb |
| 2021-11-10 | D1K0958-05VOC | 5.95 ppb |
| 2021-11-10 | D1K0958-06VOC | 5.09 ppb |
| 2021-11-10 | D1K0958-07VOC | 5.42 ppb |
| 2021-11-10 | D1K0958-08VOC | 6.13 ppb |
| 2022-02-03 | D2B0370-01VOC | 6.84 ppb |
| 2022-02-03 | D2B0370-02VOC | 7.95 ppb |
| 2022-02-03 | D2B0370-03VOC | 8.16 ppb |
| 2022-02-03 | D2B0370-04VOC | 7.40 ppb |
| 2022-02-03 | D2B0370-05VOC | 10.0 ppb |
| 2022-02-03 | D2B0370-06VOC | 5.22 ppb |
| 2022-02-03 | D2B0370-07VOC | 5.74 ppb |
| 2022-02-03 | D2B0370-08VOC | 5.15 ppb |
| 2022-05-18 | D2E1713-01VOC | 5.48 ppb |
| 2022-05-18 | D2E1713-02VOC | 5.62 ppb |
| 2022-05-18 | D2E1713-03VOC | 6.40 ppb |
| 2022-05-18 | D2E1713-04VOC | 6.60 ppb |
| 2022-05-18 | D2E1713-05VOC | 7.00 ppb |
| 2022-05-18 | D2E1713-06VOC | 5.36 ppb |
| 2022-05-18 | D2E1713-07VOC | 5.00 ppb |
| 2022-05-18 | D2E1713-08VOC | 4.84 ppb |
| 2022-08-12 | D2H1764-01VOC | 8.22 ppb |
| 2022-08-12 | D2H1764-02VOC | 9.16 ppb |
| 2022-08-12 | D2H1764-03VOC | 9.39 ppb |
| 2022-08-12 | D2H1764-04VOC | 8.77 ppb |
| 2022-08-12 | D2H1764-05VOC | 7.80 ppb |
| 2022-08-12 | D2H1764-06VOC | 7.43 ppb |
| 2022-08-12 | D2H1764-07VOC | 7.09 ppb |
| 2022-08-12 | D2H1764-08VOC | 9.23 ppb |
| 2022-11-21 | D2K1963-01VOC | 5.69 ppb |
| 2022-11-21 | D2K1963-02VOC | 6.36 ppb |
| 2022-11-21 | D2K1963-03VOC | 5.17 ppb |
| 2022-11-21 | D2K1963-04VOC | 5.89 ppb |
| 2022-11-21 | D2K1963-05VOC | 9.09 ppb |
| 2022-11-21 | D2K1963-06VOC | 5.78 ppb |
| 2022-11-21 | D2K1963-07VOC | 4.29 ppb |
| 2022-11-21 | D2K1963-08VOC | 6.92 ppb |
| 2022-11-21 | D2K1965-01VOC | 4.29 ppb |
| 2022-11-21 | D2K1965-04VOC | ND |
| 2022-11-21 | D2K1965-05VOC | ND |
| 2022-11-21 | D2K1965-02VOC | 4.03 ppb |
| 2022-11-21 | D2K1965-03VOC | 0.950 ppb |
| 2022-11-21 | D2K1965-06VOC | ND |
| 2022-11-28 | D2K2374-01VOC | 2.14 ppb |
| 2022-11-28 | D2K2374-02VOC | ND |
| 2023-02-09 | D3B1063-01VOC | 4.89 ppb |
| 2023-02-09 | D3B1063-02VOC | 5.84 ppb |
| 2023-02-09 | D3B1063-03VOC | 5.13 ppb |
| 2023-02-09 | D3B1063-04VOC | 6.84 ppb |
| 2023-02-09 | D3B1063-05VOC | 8.24 ppb |
| 2023-02-09 | D3B1063-06VOC | 4.39 ppb |
| 2023-02-09 | D3B1063-07VOC | 4.41 ppb |
| 2023-02-09 | D3B1063-08VOC | 4.16 ppb |
| 2023-03-06 | D3C0654-01VOC | 2.18 ppb |
| 2023-03-06 | D3C0654-02VOC | 2.22 ppb |
| 2023-03-06 | D3C0654-03VOC | 0.530 ppb |
| 2023-03-15 | D3C1373-01VOC | 0.910 ppb |
| 2023-05-10 | D3E1137-01VOC | 5.48 ppb |
| 2023-05-10 | D3E1137-02VOC | 5.43 ppb |
| 2023-05-10 | D3E1137-03VOC | 6.04 ppb |
| 2023-05-10 | D3E1137-04VOC | 6.55 ppb |
| 2023-05-10 | D3E1137-05VOC | 7.47 ppb |
| 2023-05-10 | D3E1137-06VOC | 4.84 ppb |
| 2023-05-10 | D3E1137-07VOC | 5.33 ppb |
| 2023-05-10 | D3E1137-08VOC | 4.98 ppb |
| 2023-08-16 | D3H2326-01VOC | 9.11 ppb |
| 2023-08-16 | D3H2326-02VOC | 8.90 ppb |
| 2023-08-16 | D3H2326-03VOC | 9.68 ppb |
| 2023-08-16 | D3H2326-04VOC | 10.2 ppb |
| 2023-08-16 | D3H2326-05VOC | 8.90 ppb |
| 2023-08-16 | D3H2326-06VOC | 7.34 ppb |
| 2023-08-16 | D3H2326-07VOC | 7.45 ppb |
| 2023-08-16 | D3H2326-08VOC | 8.79 ppb |
| 2023-11-16 | D3K1914-01VOC | 5.65 ppb |
| 2023-11-16 | D3K1914-02VOC | 6.34 ppb |
| 2023-11-16 | D3K1914-03VOC | 5.98 ppb |
| 2023-11-16 | D3K1914-04VOC | 6.44 ppb |
| 2023-11-16 | D3K1914-05VOC | 5.38 ppb |
| 2023-11-16 | D3K1914-06VOC | 5.52 ppb |
| 2023-11-16 | D3K1914-07VOC | 5.05 ppb |
| 2023-11-16 | D3K1914-08VOC | 6.15 ppb |