Dibromochloromethane
Hardy County Psd Baker
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 |
|---|---|---|---|---|
| 2014 | 0.758 ppb | 5 | 4 | ND - 1.30 ppb |
| 2015 | 0.266 ppb | 5 | 3 | ND - 0.510 ppb |
| 2016 | ND | 4 | 0 | ND |
| 2017 | 0.188 ppb | 4 | 2 | ND - 0.500 ppb |
| 2018 | 0.0975 ppb | 4 | 1 | ND - 0.390 ppb |
| 2019 | 0.113 ppb | 4 | 1 | ND - 0.450 ppb |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 0.1 ppb
The EWG Health Guideline of 0.1 ppb for dibromochloromethane was proposed in 2018 by the California Office of Environmental Health Hazard Assessment as a one-in-a-million lifetime risk of cancer. Values greater than one-in-a-million cancer risk level can result in increased cancer cases above one in a million people.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-02-18 | S2DBP_1402J83-06 | ND |
| 2014-05-27 | S2DBP_1405U70-04 | 1.27 ppb |
| 2014-07-22 | S2DBP_1407P22-01 | 0.800 ppb |
| 2014-08-12 | S2DBP_1408E96-07 | 1.30 ppb |
| 2014-11-18 | S2DBP_1411M94-05 | 0.420 ppb |
| 2015-02-12 | S2DBP_1502I38-01 | 0.390 ppb |
| 2015-05-11 | S2DBP_1505G21-02 | 0.430 ppb |
| 2015-08-24 | THM_1508W00-07A | ND |
| 2015-09-29 | S2DBP_238075-201 | ND |
| 2015-11-18 | 1511N29-03A | 0.510 ppb |
| 2016-02-11 | 1602H53-02A | ND |
| 2016-05-13 | 16051655-05A | ND |
| 2016-08-10 | 16081524-08A | ND |
| 2016-11-17 | 16112432-01A | ND |
| 2017-02-14 | 17022075-03A | ND |
| 2017-05-09 | 17051534-02A | 0.500 ppb |
| 2017-08-16 | 17082501-02A | ND |
| 2017-11-14 | 17112307-06A | 0.250 ppb |
| 2018-02-13 | 18022084-07A | ND |
| 2018-05-17 | 18052850-02A | ND |
| 2018-08-14 | 18082355-02A | ND |
| 2018-11-30 | 18120122-02A | 0.390 ppb |
| 2019-02-13 | 19021775-01A | ND |
| 2019-05-14 | 19052081-01A | 0.450 ppb |
| 2019-08-13 | 35491594001 | ND |
| 2019-11-13 | 738457001 | ND |