Dibromochloromethane
Windham Water Works
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.
102
Samples
0
Samples exceeding legal limit (MCL)
92
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | 1.64 ppb | 17 | 16 | ND - 3.90 ppb |
| 2015 | 1.53 ppb | 17 | 16 | ND - 3.90 ppb |
| 2016 | 1.84 ppb | 17 | 16 | ND - 4.80 ppb |
| 2017 | 1.06 ppb | 17 | 13 | ND - 2.20 ppb |
| 2018 | 0.882 ppb | 17 | 14 | ND - 2.20 ppb |
| 2019 | 1.48 ppb | 17 | 17 | 0.530 ppb - 4.00 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 |
|---|---|---|
| 2014-01-14 | BF98483VOC1 | ND |
| 2014-02-04 | BG05716TTHM | 0.570 ppb |
| 2014-02-04 | BG05717TTHM | 0.800 ppb |
| 2014-02-04 | BG05718TTHM | 0.690 ppb |
| 2014-02-04 | BG05719TTHM | 0.680 ppb |
| 2014-05-06 | BG40799TTHM | 0.910 ppb |
| 2014-05-06 | BG40800TTHM | 0.690 ppb |
| 2014-05-06 | BG40801TTHM | 0.880 ppb |
| 2014-05-06 | BG40802TTHM | 0.660 ppb |
| 2014-08-05 | BG87833TTHM | 3.30 ppb |
| 2014-08-05 | BG87834TTHM | 3.40 ppb |
| 2014-08-05 | BG87835TTHM | 3.50 ppb |
| 2014-08-05 | BG87836TTHM | 3.90 ppb |
| 2014-11-04 | BH35675TTHM | 2.90 ppb |
| 2014-11-04 | BH35676TTHM | 1.50 ppb |
| 2014-11-04 | BH35677TTHM | 2.20 ppb |
| 2014-11-04 | BH35678TTHM | 1.30 ppb |
| 2015-02-04 | BH70017TTHM | 0.860 ppb |
| 2015-02-04 | BH70019TTHM | 0.890 ppb |
| 2015-02-04 | BH70020TTHM | 0.790 ppb |
| 2015-02-04 | BH70018TTHM | 0.880 ppb |
| 2015-03-31 | BH90148VOC1 | ND |
| 2015-05-05 | BJ11703TTHM | 0.800 ppb |
| 2015-05-05 | BJ11704TTHM | 0.860 ppb |
| 2015-05-05 | BJ11702TTHM | 0.830 ppb |
| 2015-05-05 | BJ11701TTHM | 0.790 ppb |
| 2015-08-07 | BJ70560TTHM | 2.30 ppb |
| 2015-08-07 | BJ70558TTHM | 2.20 ppb |
| 2015-08-07 | BJ70559TTHM | 2.40 ppb |
| 2015-08-07 | BJ70561TTHM | 2.10 ppb |
| 2015-11-03 | BK17285TTHM | 1.10 ppb |
| 2015-11-03 | BK17283TTHM | 1.50 ppb |
| 2015-11-03 | BK17284TTHM | 3.80 ppb |
| 2015-11-03 | BK17282TTHM | 3.90 ppb |
| 2016-02-02 | BK60162TTHM | 0.520 ppb |
| 2016-02-02 | BK60163TTHM | 0.530 ppb |
| 2016-02-02 | BK60164TTHM | 0.570 ppb |
| 2016-02-02 | BK60165TTHM | 0.590 ppb |
| 2016-02-16 | BK65894VOC1 | ND |
| 2016-05-03 | BN23072TTHM | 0.770 ppb |
| 2016-05-03 | BN23073TTHM | 0.730 ppb |
| 2016-05-03 | BN23074TTHM | 0.690 ppb |
| 2016-05-03 | BN23075TTHM | 0.750 ppb |
| 2016-08-23 | BN96437TTHM | 4.80 ppb |
| 2016-08-23 | BN96438TTHM | 4.00 ppb |
| 2016-08-23 | BN96439TTHM | 3.90 ppb |
| 2016-08-23 | BN96440TTHM | 3.40 ppb |
| 2016-11-15 | BV82773TTHM | 3.40 ppb |
| 2016-11-15 | BV82774TTHM | 1.80 ppb |
| 2016-11-15 | BV82775TTHM | 3.20 ppb |
| 2016-11-15 | BV82776TTHM | 1.70 ppb |
| 2017-01-31 | BX41450VOC1 | ND |
| 2017-02-07 | BX47299TTHM | ND |
| 2017-02-07 | BX47300TTHM | ND |
| 2017-02-07 | BX47301TTHM | ND |
| 2017-02-14 | BX59986TTHM | 0.650 ppb |
| 2017-05-08 | BY16523TTHM | 0.820 ppb |
| 2017-05-08 | BY16524TTHM | 0.750 ppb |
| 2017-05-08 | BY16525TTHM | 0.910 ppb |
| 2017-05-08 | BY16526TTHM | 0.770 ppb |
| 2017-08-01 | BY75620TTHM | 2.10 ppb |
| 2017-08-01 | BY75621TTHM | 2.00 ppb |
| 2017-08-01 | BY75622TTHM | 2.20 ppb |
| 2017-08-01 | BY75623TTHM | 1.80 ppb |
| 2017-11-28 | BZ47145TTHM | 1.70 ppb |
| 2017-11-28 | BZ47146TTHM | 1.80 ppb |
| 2017-11-28 | BZ47147TTHM | 1.70 ppb |
| 2017-11-28 | BZ47148TTHM | 0.760 ppb |
| 2018-02-06 | BZ85068TTHM | 0.980 ppb |
| 2018-02-06 | BZ85069TTHM | 0.830 ppb |
| 2018-02-06 | BZ85070TTHM | 1.000 ppb |
| 2018-02-06 | BZ85071TTHM | 0.820 ppb |
| 2018-05-02 | CA39541TTHM | 0.710 ppb |
| 2018-05-02 | CA39542TTHM | 0.500 ppb |
| 2018-05-02 | CA39543TTHM | 0.600 ppb |
| 2018-05-02 | CA39544TTHM | ND |
| 2018-08-06 | CB05134 | 1.70 ppb |
| 2018-08-06 | CB05135 | 1.70 ppb |
| 2018-08-06 | CB05136 | 2.20 ppb |
| 2018-08-06 | CB05137 | 1.50 ppb |
| 2018-10-16 | CB72346 | 0.610 ppb |
| 2018-11-13 | CB96502 | 0.930 ppb |
| 2018-11-13 | CB96503 | ND |
| 2018-11-13 | CB96504 | 0.920 ppb |
| 2018-11-13 | CB96505 | ND |
| 2019-02-05 | CC40737 | 0.680 ppb |
| 2019-02-05 | CC40738 | 0.790 ppb |
| 2019-02-05 | CC40739 | 0.750 ppb |
| 2019-02-05 | CC40740 | 0.750 ppb |
| 2019-05-07 | CD08201 | 0.540 ppb |
| 2019-05-07 | CD08202 | 0.600 ppb |
| 2019-05-07 | CD08203 | 0.610 ppb |
| 2019-05-07 | CD08204 | 0.530 ppb |
| 2019-05-21 | CD18363 | 0.930 ppb |
| 2019-08-06 | CD78542 | 3.90 ppb |
| 2019-08-06 | CD78543 | 3.90 ppb |
| 2019-08-06 | CD78544 | 4.00 ppb |
| 2019-08-06 | CD78545 | 3.50 ppb |
| 2019-11-13 | CE59430 | 1.10 ppb |
| 2019-11-13 | CE59431 | 0.790 ppb |
| 2019-11-13 | CE59432 | 1.20 ppb |
| 2019-11-13 | CE59433 | 0.650 ppb |