Dibromochloromethane
Los Lunas Water System
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 | N/A | 0 | 0 | N/A |
| 2015 | 0.964 ppb | 8 | 6 | ND - 3.60 ppb |
| 2016 | 0.607 ppb | 16 | 11 | ND - 2.20 ppb |
| 2017 | 0.563 ppb | 16 | 12 | ND - 2.00 ppb |
| 2018 | 0.484 ppb | 16 | 10 | ND - 1.70 ppb |
| 2019 | 0.519 ppb | 16 | 8 | ND - 3.20 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 |
|---|---|---|
| 2015-07-29 | 2015021721 | 0.490 ppb |
| 2015-07-29 | 2015021719 | 0.460 ppb |
| 2015-07-29 | 2015021717 | ND |
| 2015-07-29 | 2015021716 | 1.80 ppb |
| 2015-11-04 | 1511221-001A | 3.60 ppb |
| 2015-11-04 | 1511215-001A | 0.716 ppb |
| 2015-11-04 | 1511217-001A | 0.644 ppb |
| 2015-11-04 | 1511213-001A | ND |
| 2016-02-25 | 1602A76-001A | ND |
| 2016-02-25 | 1602A75-001A | ND |
| 2016-02-25 | 1602A77-001A | ND |
| 2016-02-25 | 1602A74-001A | 0.923 ppb |
| 2016-04-11 | 2016010165 | 1.000 ppb |
| 2016-04-11 | 2016010167 | 0.340 ppb |
| 2016-04-11 | 2016010168 | ND |
| 2016-04-11 | 2016010166 | ND |
| 2016-07-07 | 2016019230 | 0.440 ppb |
| 2016-07-07 | 2016019228 | 0.570 ppb |
| 2016-07-07 | 2016019231 | 0.870 ppb |
| 2016-07-07 | 2016019229 | 2.20 ppb |
| 2016-10-11 | 2016029466 | 0.780 ppb |
| 2016-10-11 | 2016029465 | 0.650 ppb |
| 2016-10-11 | 2016029467 | 0.340 ppb |
| 2016-10-11 | 2016029464 | 1.60 ppb |
| 2017-01-04 | 2017000171 | 1.10 ppb |
| 2017-01-04 | 2017000169 | 0.210 ppb |
| 2017-01-04 | 2017000168 | ND |
| 2017-01-04 | 2017000170 | ND |
| 2017-04-04 | 2017009618 | 1.000 ppb |
| 2017-04-04 | 2017009616 | ND |
| 2017-04-04 | 2017009617 | 0.320 ppb |
| 2017-04-04 | 2017009615 | 0.420 ppb |
| 2017-07-12 | 2017019921 | 1.20 ppb |
| 2017-07-12 | 2017019922 | 0.710 ppb |
| 2017-07-12 | 2017019923 | 0.340 ppb |
| 2017-07-12 | 2017019920 | 0.220 ppb |
| 2017-10-10 | 2017029141 | ND |
| 2017-10-10 | 2017029142 | 2.00 ppb |
| 2017-10-10 | 2017029140 | 1.30 ppb |
| 2017-10-10 | 2017029139 | 0.180 ppb |
| 2018-01-17 | 2018001598 | 0.150 ppb |
| 2018-01-17 | 2018001597 | 1.10 ppb |
| 2018-01-17 | 2018001596 | ND |
| 2018-01-17 | 2018001595 | 0.290 ppb |
| 2018-04-11 | 2018010250 | ND |
| 2018-04-11 | 2018010247 | ND |
| 2018-04-11 | 2018010248 | 0.180 ppb |
| 2018-04-11 | 2018010249 | 1.40 ppb |
| 2018-07-10 | 2018018580 | 0.620 ppb |
| 2018-07-10 | 2018018579 | 0.230 ppb |
| 2018-07-10 | 2018018578 | 1.70 ppb |
| 2018-07-10 | 2018018577 | ND |
| 2018-10-03 | 2018028352 | 1.70 ppb |
| 2018-10-03 | 2018028353 | 0.380 ppb |
| 2018-10-03 | 2018028354 | ND |
| 2018-10-03 | 2018028355 | ND |
| 2019-01-08 | 2019000454 | ND |
| 2019-01-08 | 2019000455 | ND |
| 2019-01-08 | 2019000456 | 1.10 ppb |
| 2019-01-08 | 2019000457 | 0.140 ppb |
| 2019-04-03 | 2019008329 | ND |
| 2019-04-03 | 2019008332 | ND |
| 2019-04-03 | 2019008331 | ND |
| 2019-04-03 | 2019008330 | 0.810 ppb |
| 2019-07-15 | 2019019199 | ND |
| 2019-07-15 | 2019019201 | 3.20 ppb |
| 2019-07-15 | 2019019200 | 0.220 ppb |
| 2019-07-15 | 2019019198 | 0.610 ppb |
| 2019-10-16 | 2019029569 | 0.420 ppb |
| 2019-10-16 | 2019029568 | ND |
| 2019-10-16 | 2019029567 | ND |
| 2019-10-16 | 2019029566 | 1.80 ppb |