Dibromochloromethane
Bedford Regional Water Authority (brwa)
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.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2014 | N/A | 0 | 0 | N/A |
2015 | N/A | 0 | 0 | N/A |
2016 | 0.357 ppb | 20 | 11 | ND - 1.14 ppb |
2017 | 1.32 ppb | 23 | 18 | ND - 7.64 ppb |
2018 | 0.918 ppb | 32 | 30 | ND - 9.42 ppb |
2019 | 0.191 ppb | 40 | 12 | ND - 1.50 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 |
---|---|---|
2016-01-21 | 1601L65-01A | 1.01 ppb |
2016-02-22 | 1602P81-01A | ND |
2016-02-22 | 1602P81-03A | ND |
2016-04-20 | 16042291-01A | 0.640 ppb |
2016-04-26 | 16042814-03A | 0.290 ppb |
2016-04-26 | 16042814-05A | ND |
2016-05-16 | 16051802-01A | ND |
2016-05-16 | 16051802-02A | ND |
2016-07-18 | 16071828-03A | 0.430 ppb |
2016-07-18 | 16071828-05A | 0.380 ppb |
2016-07-21 | 16072337-01A | 0.740 ppb |
2016-08-23 | 16083360-01A | 0.580 ppb |
2016-08-23 | 16083360-02A | 0.450 ppb |
2016-10-13 | 16101669-01A | 1.14 ppb |
2016-10-17 | 16101956-05A | 0.830 ppb |
2016-10-17 | 16101956-03A | 0.650 ppb |
2016-10-27 | 16103065-01A | ND |
2016-10-27 | 16103065-02A | ND |
2016-11-14 | 16111726-01A | ND |
2016-11-14 | 16111726-03A | ND |
2017-01-12 | 17011367-01A | 0.790 ppb |
2017-01-19 | 17012031-05A | 0.300 ppb |
2017-01-19 | 17012031-03A | ND |
2017-02-15 | 17021950-01A | ND |
2017-02-15 | 17021950-03A | ND |
2017-04-17 | 17041917-03A | ND |
2017-04-17 | 17041917-05A | ND |
2017-04-26 | 17042938-01A | 1.05 ppb |
2017-05-23 | 17053016-03A | 0.410 ppb |
2017-05-23 | 17053016-01A | 0.260 ppb |
2017-07-20 | 17072492-01A | 0.780 ppb |
2017-07-24 | 17072744--05A | 0.620 ppb |
2017-07-24 | 17072744-03A | 0.580 ppb |
2017-08-09 | 17081608-03A | 0.920 ppb |
2017-08-09 | 17081608-01A | 0.870 ppb |
2017-10-11 | 17101459-15A | 7.64 ppb |
2017-10-11 | 17101459-13A | 7.39 ppb |
2017-10-11 | 17101459-05A | 1.60 ppb |
2017-10-11 | 17101459-07A | 1.55 ppb |
2017-10-11 | 17101459-11A | 1.52 ppb |
2017-10-11 | 17101459-03A | 1.47 ppb |
2017-10-11 | 17101459-01A | 1.34 ppb |
2017-10-11 | 17101459-09A | 1.25 ppb |
2018-01-16 | 18011706-01A | 0.790 ppb |
2018-01-16 | 18011706-03A | 0.750 ppb |
2018-01-16 | 18011706-05A | 1.02 ppb |
2018-01-16 | 18011706-07A | 0.950 ppb |
2018-01-16 | 18011706-09A | 0.750 ppb |
2018-01-16 | 18011706-11A | 1.01 ppb |
2018-01-16 | 18011706-13A | 9.42 ppb |
2018-01-16 | 18011706-15A | 4.97 ppb |
2018-04-12 | 18041724-01A | 0.300 ppb |
2018-04-12 | 18041724-03A | 0.370 ppb |
2018-04-12 | 18041724-05A | 0.320 ppb |
2018-04-12 | 18041724-07A | 0.300 ppb |
2018-04-12 | 18041724-09A | 0.330 ppb |
2018-04-12 | 18041724-11A | 0.380 ppb |
2018-04-12 | 18041724-13A | 0.390 ppb |
2018-04-12 | 18041724-15A | 0.280 ppb |
2018-07-24 | 18073115-01A | 0.700 ppb |
2018-07-24 | 18073115-03A | 0.650 ppb |
2018-07-24 | 18073115-05A | 0.750 ppb |
2018-07-24 | 18073115-07A | 0.830 ppb |
2018-07-24 | 18073115-09A | 0.500 ppb |
2018-07-24 | 18073115-11A | 0.550 ppb |
2018-07-24 | 18073115-13A | 0.320 ppb |
2018-07-24 | 18073115-15A | 0.300 ppb |
2018-10-17 | 18102482-01A | 0.330 ppb |
2018-10-17 | 18102482-03A | 0.360 ppb |
2018-10-17 | 18102482-05A | 0.410 ppb |
2018-10-17 | 18102482-07A | 0.450 ppb |
2018-10-17 | 18102482-09A | 0.430 ppb |
2018-10-17 | 18102482-11A | 0.450 ppb |
2018-10-17 | 18102482-13A | ND |
2018-10-17 | 18102482-15A | ND |
2019-01-24 | 19012822-01A | 0.650 ppb |
2019-01-24 | 19012822-04A | ND |
2019-01-24 | 19012822-06A | ND |
2019-01-24 | 19012822-08A | ND |
2019-01-24 | 19012822-10A | ND |
2019-01-24 | 19012822-12A | 0.270 ppb |
2019-01-24 | 19012822-14A | ND |
2019-01-24 | 19012882-16A | ND |
2019-04-11 | 19041634-001A | ND |
2019-04-11 | 19041634-005A | ND |
2019-04-11 | 19041634-007A | ND |
2019-04-11 | 19041634-009A | ND |
2019-04-11 | 19041634-03A | ND |
2019-04-11 | 19041634-11A | ND |
2019-04-11 | 19041634-13A | ND |
2019-04-11 | 19041634-15A | ND |
2019-07-11 | 19071661-01A | ND |
2019-07-11 | 19071661-03A | ND |
2019-07-11 | 19071661-05A | ND |
2019-07-11 | 19071661-07A | ND |
2019-07-11 | 19071661-09A | ND |
2019-07-11 | 19071661-11A | ND |
2019-07-11 | 19071661-13A | ND |
2019-07-11 | 19071661-15A | ND |
2019-07-23 | L1122790-01 | 0.420 ppb |
2019-07-23 | L1122790-02 | 0.500 ppb |
2019-07-23 | L1122790-03 | 0.516 ppb |
2019-07-23 | L1122790-04 | 0.551 ppb |
2019-07-23 | L1122790-05 | 0.553 ppb |
2019-07-23 | L1122790-06 | 0.616 ppb |
2019-07-23 | L1122790-07 | 0.468 ppb |
2019-07-23 | L1122790-08 | 0.382 ppb |
2019-10-10 | 734387001 | ND |
2019-10-10 | 734387004 | ND |
2019-10-10 | 734387006 | ND |
2019-10-10 | 734387008 | ND |
2019-10-10 | 734387010 | ND |
2019-10-10 | 734387012 | ND |
2019-10-10 | 734387014 | 1.20 ppb |
2019-10-10 | 734387016 | 1.50 ppb |