Bromodichloromethane
Meridian 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 | 0.816 ppb | 25 | 21 | ND - 2.00 ppb |
| 2019 | 0.731 ppb | 32 | 21 | ND - 1.60 ppb |
| 2020 | 0.889 ppb | 24 | 19 | ND - 1.60 ppb |
| 2021 | 0.760 ppb | 29 | 16 | ND - 2.10 ppb |
| 2022 | 0.802 ppb | 34 | 19 | ND - 2.50 ppb |
| 2023 | 0.351 ppb | 70 | 18 | ND - 3.00 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 |
|---|---|---|
| 2018-03-06 | D201803090744 | 0.950 ppb |
| 2018-03-06 | D201803090747 | 0.930 ppb |
| 2018-03-06 | D201803090746 | 1.000 ppb |
| 2018-03-06 | D201803090745 | 1.10 ppb |
| 2018-05-23 | D201805240688 | 0.560 ppb |
| 2018-05-23 | D201805240689 | ND |
| 2018-05-23 | D201805240690 | 0.990 ppb |
| 2018-05-23 | D201805240687 | 1.10 ppb |
| 2018-07-09 | D201807111080 | 0.800 ppb |
| 2018-07-09 | D201807111081 | 1.30 ppb |
| 2018-07-09 | D201807111082 | 1.10 ppb |
| 2018-07-09 | D201807111079 | 2.00 ppb |
| 2018-07-09 | D201807111078 | 1.30 ppb |
| 2018-07-09 | D201807111077 | 1.10 ppb |
| 2018-07-09 | D201807111076 | 0.620 ppb |
| 2018-07-09 | D201807111074 | 0.560 ppb |
| 2018-07-09 | D201807111075 | 0.550 ppb |
| 2018-11-26 | D201811270533 | ND |
| 2018-11-26 | D201811270532 | 1.40 ppb |
| 2018-11-26 | D201811270531 | 0.600 ppb |
| 2018-11-26 | D201811270530 | 0.760 ppb |
| 2018-11-26 | D201811270529 | 0.940 ppb |
| 2018-11-26 | D201811270528 | 0.730 ppb |
| 2018-11-26 | 201811270591 | ND |
| 2018-11-26 | 201811270593 | ND |
| 2019-01-29 | D201902010362 | 1.30 ppb |
| 2019-01-29 | D201902010361 | 0.880 ppb |
| 2019-01-29 | D201902010360 | 1.000 ppb |
| 2019-01-29 | D201902010365 | ND |
| 2019-01-29 | D201902010364 | 1.10 ppb |
| 2019-01-29 | D201902010363 | 1.50 ppb |
| 2019-06-03 | 201907080762 | ND |
| 2019-06-18 | D201906200380 | ND |
| 2019-06-18 | D201906200381 | ND |
| 2019-06-18 | D201906200382 | 0.700 ppb |
| 2019-06-18 | D201906200383 | 1.000 ppb |
| 2019-06-18 | D201906200384 | ND |
| 2019-06-18 | D201906200379 | 1.30 ppb |
| 2019-06-18 | 201906200379 | 1.30 ppb |
| 2019-06-18 | 201906200380 | ND |
| 2019-06-18 | 201906200381 | ND |
| 2019-06-18 | 201906200382 | 0.700 ppb |
| 2019-06-18 | 201906200383 | 1.000 ppb |
| 2019-06-18 | 201906200384 | ND |
| 2019-09-12 | 201909130169 | 1.40 ppb |
| 2019-09-24 | 201909250359 | 1.40 ppb |
| 2019-09-24 | 201909250360 | 0.830 ppb |
| 2019-09-24 | 201909250361 | 1.20 ppb |
| 2019-09-24 | 201909250362 | 1.20 ppb |
| 2019-09-24 | 201909250363 | 1.60 ppb |
| 2019-09-24 | 201909250364 | ND |
| 2019-11-12 | 201911130448 | 0.540 ppb |
| 2019-11-12 | 201911130449 | ND |
| 2019-11-12 | 201911130450 | 1.50 ppb |
| 2019-11-12 | 201911130451 | 0.730 ppb |
| 2019-11-12 | 201911130452 | 1.20 ppb |
| 2019-11-12 | 201911130453 | ND |
| 2020-03-03 | 202003040692 | ND |
| 2020-03-03 | 202003040693 | 0.750 ppb |
| 2020-03-03 | 202003040694 | 1.30 ppb |
| 2020-03-03 | 202003040695 | 1.60 ppb |
| 2020-03-03 | 202003040696 | 1.30 ppb |
| 2020-03-03 | 202003040697 | ND |
| 2020-04-21 | 202004220893 | 0.600 ppb |
| 2020-04-21 | 202004220894 | 0.540 ppb |
| 2020-04-21 | 202004220895 | 1.30 ppb |
| 2020-04-21 | 202004220896 | 1.40 ppb |
| 2020-04-21 | 202004220897 | 1.40 ppb |
| 2020-04-21 | 202004220898 | ND |
| 2020-07-13 | 202007140428 | 1.30 ppb |
| 2020-07-13 | 202007140429 | 1.50 ppb |
| 2020-07-13 | 202007140430 | 0.630 ppb |
| 2020-07-29 | 202007300339 | ND |
| 2020-07-29 | 202007300340 | ND |
| 2020-07-29 | 202007300341 | 0.880 ppb |
| 2020-11-12 | 202011130876 | 0.510 ppb |
| 2020-11-12 | 202011130877 | 1.20 ppb |
| 2020-11-12 | 202011130878 | 1.60 ppb |
| 2020-11-12 | 202011130879 | 1.40 ppb |
| 2020-11-12 | 202011130880 | 1.60 ppb |
| 2020-11-12 | 202011130881 | 0.520 ppb |
| 2021-01-27 | 202101280244 | ND |
| 2021-01-27 | 202101280249 | ND |
| 2021-01-27 | 202101280247 | 1.30 ppb |
| 2021-01-27 | 202101280246 | 0.970 ppb |
| 2021-01-27 | 202101280248 | 1.50 ppb |
| 2021-01-27 | 202101280245 | ND |
| 2021-04-28 | 202104290425 | ND |
| 2021-04-28 | 202104290423 | 1.50 ppb |
| 2021-04-28 | 202104290421 | ND |
| 2021-04-28 | 202104290422 | 2.00 ppb |
| 2021-04-28 | 202104290424 | 1.60 ppb |
| 2021-04-28 | 202104290420 | ND |
| 2021-05-18 | 202105190723 | ND |
| 2021-07-15 | 202107170079 | ND |
| 2021-07-21 | 202107220276 | ND |
| 2021-07-28 | 202107290502 | ND |
| 2021-07-28 | 202107290506 | ND |
| 2021-07-28 | 202107290501 | 0.550 ppb |
| 2021-07-28 | 202107290505 | 1.80 ppb |
| 2021-07-28 | 202107290503 | 0.540 ppb |
| 2021-07-28 | 202107290504 | 1.50 ppb |
| 2021-10-27 | 202110281063 | 0.910 ppb |
| 2021-10-27 | 202110281058 | 0.580 ppb |
| 2021-10-27 | 202110281060 | 1.80 ppb |
| 2021-10-27 | 202110281061 | 2.10 ppb |
| 2021-10-27 | 202110281059 | 1.70 ppb |
| 2021-10-27 | 202110281062 | 1.70 ppb |
| 2021-11-16 | 202111170828 | ND |
| 2021-11-16 | 202111170684 | ND |
| 2022-02-15 | 202202170046 | ND |
| 2022-02-15 | 202202160930 | ND |
| 2022-02-16 | 202202180560 | ND |
| 2022-02-16 | 202202180561 | 1.60 ppb |
| 2022-02-16 | 202202180562 | 1.30 ppb |
| 2022-02-16 | 202202180563 | 1.30 ppb |
| 2022-02-16 | 202202180564 | 1.20 ppb |
| 2022-02-16 | 202202180565 | ND |
| 2022-02-22 | 202202231265 | ND |
| 2022-03-01 | 202203030262 | ND |
| 2022-03-01 | 202203030263 | ND |
| 2022-03-08 | 202203100069 | ND |
| 2022-05-10 | 380-1913-2 | ND |
| 2022-06-30 | 380-7833-1 | ND |
| 2022-06-30 | 380-7833-2 | ND |
| 2022-06-30 | 380-7833-3 | 0.900 ppb |
| 2022-06-30 | 380-7833-4 | 1.40 ppb |
| 2022-06-30 | 380-7833-5 | 1.20 ppb |
| 2022-06-30 | 380-7833-6 | 0.920 ppb |
| 2022-09-20 | 380-21524-1 | 0.710 ppb |
| 2022-09-20 | 380-21524-2 | 0.540 ppb |
| 2022-09-20 | 380-21524-3 | 1.30 ppb |
| 2022-09-20 | 380-21524-4 | 2.50 ppb |
| 2022-09-20 | 380-21524-5 | 2.40 ppb |
| 2022-09-20 | 380-21524-6 | 0.990 ppb |
| 2022-09-20 | 810-38391-1 | ND |
| 2022-10-12 | 380-24415-2 | ND |
| 2022-11-15 | 380-28459-1 | ND |
| 2022-11-15 | 380-28459-2 | 1.80 ppb |
| 2022-11-15 | 380-28459-3 | 2.40 ppb |
| 2022-11-15 | 380-28459-4 | 1.70 ppb |
| 2022-11-15 | 380-28459-5 | 2.10 ppb |
| 2022-11-15 | 380-28459-6 | 1.000 ppb |
| 2022-11-16 | 380-28732-1 | ND |
| 2023-01-11 | 380-34262-2 | ND |
| 2023-01-24 | 380-35453-1 | ND |
| 2023-01-24 | 380-35453-2 | 1.10 ppb |
| 2023-01-24 | 380-35453-3 | 1.20 ppb |
| 2023-01-24 | 380-35453-4 | 1.30 ppb |
| 2023-01-24 | 380-35453-5 | 1.30 ppb |
| 2023-01-24 | 380-35453-6 | ND |
| 2023-06-05 | 380-49974-4 | ND |
| 2023-06-05 | 380-49949-1 | 0.660 ppb |
| 2023-06-05 | 380-49949-2 | 0.500 ppb |
| 2023-06-05 | 380-49949-3 | 1.90 ppb |
| 2023-06-05 | 380-49949-4 | 3.00 ppb |
| 2023-06-05 | 380-49949-5 | 2.20 ppb |
| 2023-06-05 | 380-49949-6 | ND |
| 2023-08-01 | 380-57235-1 | ND |
| 2023-08-02 | 380-57434-1 | ND |
| 2023-08-02 | 380-57434-5 | ND |
| 2023-08-02 | 380-57496-1 | ND |
| 2023-08-02 | 380-57496-2 | ND |
| 2023-08-02 | 380-57460-1 | ND |
| 2023-08-02 | 380-57460-2 | ND |
| 2023-08-02 | 380-57439-1 | ND |
| 2023-08-02 | 380-57439-5 | ND |
| 2023-08-02 | 380-57464-1 | ND |
| 2023-08-02 | 380-57431-1AA | ND |
| 2023-08-02 | 380-57431-2AA | ND |
| 2023-08-07 | 380-57977-1 | ND |
| 2023-08-07 | 380-57977-2 | ND |
| 2023-08-07 | 380-57957-1 | ND |
| 2023-08-07 | 380-57957-2 | ND |
| 2023-08-07 | 380-57974-1 | ND |
| 2023-08-07 | 380-57974-2 | ND |
| 2023-08-07 | 380-57897-1 | ND |
| 2023-08-07 | 380-57894-1 | ND |
| 2023-08-07 | 380-57899-1 | ND |
| 2023-08-09 | 380-58461-1 | ND |
| 2023-08-09 | 380-58496-1 | ND |
| 2023-08-10 | 380-58742-1 | ND |
| 2023-08-10 | 380-58742-2 | ND |
| 2023-08-10 | 380-58749-1 | ND |
| 2023-08-10 | 380-58749-2 | ND |
| 2023-08-10 | 380-58702-1 | ND |
| 2023-08-10 | 380-58702-2 | ND |
| 2023-09-05 | 380-61807-1 | 0.520 ppb |
| 2023-09-05 | 380-61807-2 | 1.10 ppb |
| 2023-09-05 | 380-61807-3 | 1.40 ppb |
| 2023-09-05 | 380-61807-4 | 1.50 ppb |
| 2023-09-05 | 380-61807-5 | 1.90 ppb |
| 2023-09-05 | 380-61807-6 | ND |
| 2023-09-05 | 380-61825-3 | ND |
| 2023-09-23 | 380-64644-1 | ND |
| 2023-09-23 | 380-64644-1A | ND |
| 2023-09-26 | 380-64488-1 | ND |
| 2023-09-26 | 380-64488-2 | ND |
| 2023-09-26 | 380-64427-1 | ND |
| 2023-09-26 | 380-64427-2 | ND |
| 2023-10-03 | 380-65599-4 | ND |
| 2023-10-04 | 380-65926-1 | ND |
| 2023-10-04 | 380-65926-2 | 1.10 ppb |
| 2023-10-04 | 380-65926-3 | 1.30 ppb |
| 2023-10-04 | 380-65926-4 | 0.900 ppb |
| 2023-10-04 | 380-65926-5 | 1.70 ppb |
| 2023-10-04 | 380-65926-6 | ND |
| 2023-11-14 | 380-71156-1 | ND |
| 2023-11-14 | 380-71156-2 | ND |
| 2023-11-14 | 380-71138-1 | ND |
| 2023-11-20 | 380-72055-1 | ND |
| 2023-11-20 | 380-72055-2 | ND |
| 2023-11-20 | 380-72055-3 | ND |
| 2023-11-20 | 380-72055-4 | ND |