Dibromochloromethane
Pulaski County Public Service Authority
Dibromochloromethane, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Dibromochloromethane 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 | 0.338 ppb | 8 | 5 | ND - 1.01 ppb |
| 2019 | 0.0988 ppb | 8 | 2 | ND - 0.420 ppb |
| 2020 | 0.0350 ppb | 16 | 1 | ND - 0.560 ppb |
| 2021 | 0.323 ppb | 8 | 4 | ND - 0.780 ppb |
| 2022 | 0.248 ppb | 8 | 3 | ND - 0.690 ppb |
| 2023 | 0.398 ppb | 8 | 5 | ND - 0.900 ppb |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
EWG Health Guideline: 0.1 ppb
The EWG Health Guideline of 0.1 ppb for dibromochloromethane 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 |
|---|---|---|
| 2018-03-15 | 18032212-03A | 0.300 ppb |
| 2018-03-15 | 18032212-05A | 0.400 ppb |
| 2018-06-14 | 18062309-03A | ND |
| 2018-06-14 | 18062309-05A | ND |
| 2018-09-20 | 18092761-03A | 0.730 ppb |
| 2018-09-20 | 18092761-05A | 1.01 ppb |
| 2018-12-19 | 18122948-03A | 0.260 ppb |
| 2018-12-19 | 18122948-05A | ND |
| 2019-03-14 | 19032061-02A | 0.420 ppb |
| 2019-03-14 | 19032061-06A | 0.370 ppb |
| 2019-06-20 | 19062858-04A | ND |
| 2019-06-20 | 19062858-06A | ND |
| 2019-09-19 | 731898004 | ND |
| 2019-09-19 | 731898008 | ND |
| 2019-12-19 | 7312419005 | ND |
| 2019-12-19 | 7312419003 | ND |
| 2020-01-16 | 7315018007 | ND |
| 2020-03-19 | 7321859007 | ND |
| 2020-03-19 | 7321859005 | ND |
| 2020-06-18 | 7332132005 | 0.560 ppb |
| 2020-06-18 | 7332132004 | ND |
| 2020-09-30 | 7344631001_460165 | ND |
| 2020-09-30 | 7344631003 | ND |
| 2020-09-30 | 7344631003_460165 | ND |
| 2020-09-30 | 7344631005 | ND |
| 2020-09-30 | 7344631005_460165 | ND |
| 2020-11-20 | 7351287003_460165 | ND |
| 2020-12-17 | 7354388006_460165 | ND |
| 2020-12-17 | 7354388006 | ND |
| 2020-12-17 | 7354388004_460165 | ND |
| 2020-12-17 | 7354388004 | ND |
| 2020-12-17 | 7354388002_460165 | ND |
| 2021-03-18 | 7364448002_460165 | ND |
| 2021-03-18 | 7364448006_460165 | ND |
| 2021-06-16 | 4935929 | ND |
| 2021-06-16 | 4935931 | 0.700 ppb |
| 2021-09-15 | 810-3032-3 | 0.600 ppb |
| 2021-09-15 | 810-3032-2 | 0.780 ppb |
| 2021-12-15 | 810-10615-2T | 0.500 ppb |
| 2021-12-15 | 810-10615-1 | ND |
| 2022-03-14 | 810-18296-2T | ND |
| 2022-03-14 | 810-18296-1T | ND |
| 2022-06-17 | 810-28667-2T | 0.680 ppb |
| 2022-06-17 | 810-28667-1T | 0.690 ppb |
| 2022-09-19 | 810-38609-B-2 | ND |
| 2022-09-19 | 810-38609-B-1 | 0.610 ppb |
| 2022-12-19 | 810-48163-A-2 | ND |
| 2022-12-19 | 810-48163-A-1 | ND |
| 2023-03-20 | 810-57469-A-1 | 0.640 ppb |
| 2023-03-20 | 810-57469-A-2 | 0.520 ppb |
| 2023-06-17 | 810-67411-B-1 | 0.530 ppb |
| 2023-06-17 | 810-67414-B-1 | 0.590 ppb |
| 2023-09-19 | 810-78766-D-1 | 0.900 ppb |
| 2023-09-19 | 810-78771-D-1 | ND |
| 2023-12-18 | 810-88708-D-1 | ND |
| 2023-12-18 | 810-88708-D-2 | ND |