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EWG's Tap Water Database — 2021 UPDATE

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Dibromochloromethane

Denver Water Board

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.

MORE ABOUT THIS CONTAMINANT

 

470

Samples

0

Samples exceeding legal limit (MCL)

425

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20140.700 ppb4024ND - 2.60 ppb
20150.531 ppb164ND - 4.80 ppb
20161.77 ppb4846ND - 4.00 ppb
20172.37 ppb190181ND - 5.00 ppb
20182.29 ppb112108ND - 4.60 ppb
20192.01 ppb6462ND - 3.90 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 Result
2014-01-071.50 ppb
2014-04-082.30 ppb
2014-04-08ND
2014-05-061.40 ppb
2014-05-061.000 ppb
2014-05-271.40 ppb
2014-05-270.800 ppb
2014-05-270.700 ppb
2014-06-03ND
2014-06-03ND
2014-06-03ND
2014-07-081.70 ppb
2014-07-081.000 ppb
2014-07-080.700 ppb
2014-08-030.700 ppb
2014-08-051.90 ppb
2014-08-050.900 ppb
2014-08-050.900 ppb
2014-08-182.60 ppb
2014-08-180.600 ppb
2014-08-181.000 ppb
2014-09-021.20 ppb
2014-09-02ND
2014-09-020.900 ppb
2014-10-07ND
2014-10-07ND
2014-10-070.600 ppb
2014-10-070.900 ppb
2014-11-04ND
2014-11-04ND
2014-11-04ND
2014-11-041.30 ppb
2014-11-20ND
2014-11-20ND
2014-11-20ND
2014-11-201.000 ppb
2014-12-02ND
2014-12-02ND
2014-12-02ND
2014-12-021.000 ppb
2015-01-06ND
2015-01-06ND
2015-01-06ND
2015-01-061.10 ppb
2015-02-03ND
2015-02-03ND
2015-02-031.40 ppb
2015-02-03ND
2015-02-18ND
2015-02-18ND
2015-02-184.80 ppb
2015-02-18ND
2015-03-03ND
2015-03-03ND
2015-03-031.20 ppb
2015-03-03ND
2016-06-062.40 ppb
2016-06-062.10 ppb
2016-06-061.60 ppb
2016-06-061.70 ppb
2016-06-061.60 ppb
2016-06-061.50 ppb
2016-06-061.40 ppb
2016-06-064.00 ppb
2016-06-061.80 ppb
2016-06-061.50 ppb
2016-06-061.80 ppb
2016-06-061.60 ppb
2016-06-061.30 ppb
2016-06-064.00 ppb
2016-06-061.50 ppb
2016-06-071.40 ppb
2016-09-071.60 ppb
2016-09-071.80 ppb
2016-09-072.00 ppb
2016-09-071.10 ppb
2016-09-070.900 ppb
2016-09-07ND
2016-09-071.30 ppb
2016-09-071.80 ppb
2016-09-072.10 ppb
2016-09-071.50 ppb
2016-09-072.30 ppb
2016-09-071.50 ppb
2016-09-071.80 ppb
2016-09-071.60 ppb
2016-09-071.50 ppb
2016-09-081.60 ppb
2016-12-061.80 ppb
2016-12-061.60 ppb
2016-12-06ND
2016-12-063.00 ppb
2016-12-061.40 ppb
2016-12-061.90 ppb
2016-12-061.90 ppb
2016-12-062.00 ppb
2016-12-062.00 ppb
2016-12-061.90 ppb
2016-12-062.00 ppb
2016-12-061.80 ppb
2016-12-061.90 ppb
2016-12-071.90 ppb
2016-12-072.00 ppb
2016-12-082.10 ppb
2017-01-032.20 ppb
2017-01-032.00 ppb
2017-01-032.80 ppb
2017-01-030.500 ppb
2017-01-033.50 ppb
2017-01-033.40 ppb
2017-01-032.20 ppb
2017-01-032.90 ppb
2017-01-033.50 ppb
2017-01-033.50 ppb
2017-01-033.50 ppb
2017-01-033.50 ppb
2017-01-033.00 ppb
2017-01-042.70 ppb
2017-02-063.30 ppb
2017-02-061.20 ppb
2017-02-063.30 ppb
2017-02-063.20 ppb
2017-02-063.10 ppb
2017-02-063.30 ppb
2017-02-060.600 ppb
2017-02-062.10 ppb
2017-02-063.80 ppb
2017-02-073.70 ppb
2017-02-084.00 ppb
2017-02-083.20 ppb
2017-02-082.80 ppb
2017-02-08ND
2017-02-081.70 ppb
2017-02-083.50 ppb
2017-03-061.90 ppb
2017-03-063.10 ppb
2017-03-062.90 ppb
2017-03-062.90 ppb
2017-03-061.80 ppb
2017-03-062.20 ppb
2017-03-061.80 ppb
2017-03-062.20 ppb
2017-03-062.50 ppb
2017-03-063.60 ppb
2017-03-073.10 ppb
2017-03-072.10 ppb
2017-03-073.10 ppb
2017-03-073.20 ppb
2017-03-082.90 ppb
2017-03-082.20 ppb
2017-04-033.00 ppb
2017-04-033.60 ppb
2017-04-034.00 ppb
2017-04-034.00 ppb
2017-04-032.60 ppb
2017-04-033.80 ppb
2017-04-033.50 ppb
2017-04-033.90 ppb
2017-04-033.50 ppb
2017-04-033.60 ppb
2017-04-033.00 ppb
2017-04-033.70 ppb
2017-04-043.00 ppb
2017-04-042.60 ppb
2017-04-043.50 ppb
2017-04-052.40 ppb
2017-05-022.30 ppb
2017-05-022.20 ppb
2017-05-022.30 ppb
2017-05-023.70 ppb
2017-05-022.30 ppb
2017-05-022.40 ppb
2017-05-033.70 ppb
2017-05-032.10 ppb
2017-05-033.20 ppb
2017-05-033.90 ppb
2017-05-032.20 ppb
2017-05-034.10 ppb
2017-05-032.20 ppb
2017-05-032.50 ppb
2017-05-032.60 ppb
2017-05-032.80 ppb
2017-06-052.10 ppb
2017-06-051.80 ppb
2017-06-051.80 ppb
2017-06-051.80 ppb
2017-06-051.70 ppb
2017-06-052.00 ppb
2017-06-053.00 ppb
2017-06-052.20 ppb
2017-06-053.60 ppb
2017-06-051.80 ppb
2017-06-050.600 ppb
2017-06-051.70 ppb
2017-06-055.00 ppb
2017-06-052.80 ppb
2017-06-051.90 ppb
2017-06-062.10 ppb
2017-07-052.20 ppb
2017-07-051.20 ppb
2017-07-053.40 ppb
2017-07-051.30 ppb
2017-07-051.40 ppb
2017-07-051.40 ppb
2017-07-051.20 ppb
2017-07-051.30 ppb
2017-07-051.30 ppb
2017-07-051.30 ppb
2017-07-052.70 ppb
2017-07-05ND
2017-07-054.10 ppb
2017-07-050.900 ppb
2017-07-051.30 ppb
2017-07-060.700 ppb
2017-08-08ND
2017-08-091.90 ppb
2017-08-092.50 ppb
2017-08-09ND
2017-08-09ND
2017-08-092.10 ppb
2017-08-092.20 ppb
2017-08-091.90 ppb
2017-08-092.10 ppb
2017-08-092.30 ppb
2017-08-092.20 ppb
2017-08-092.20 ppb
2017-08-092.60 ppb
2017-08-092.40 ppb
2017-08-092.30 ppb
2017-08-101.60 ppb
2017-09-05ND
2017-09-060.800 ppb
2017-09-061.80 ppb
2017-09-062.10 ppb
2017-09-061.80 ppb
2017-09-062.10 ppb
2017-09-061.80 ppb
2017-09-061.80 ppb
2017-09-061.90 ppb
2017-09-061.80 ppb
2017-09-061.80 ppb
2017-09-061.10 ppb
2017-09-06ND
2017-09-06ND
2017-09-061.40 ppb
2017-09-061.40 ppb
2017-10-021.20 ppb
2017-10-032.60 ppb
2017-10-031.90 ppb
2017-10-032.00 ppb
2017-10-031.30 ppb
2017-10-031.90 ppb
2017-10-031.80 ppb
2017-10-031.10 ppb
2017-10-031.80 ppb
2017-10-03ND
2017-10-033.80 ppb
2017-10-032.70 ppb
2017-10-031.90 ppb
2017-10-031.80 ppb
2017-10-031.80 ppb
2017-10-041.70 ppb
2017-11-063.10 ppb
2017-11-062.20 ppb
2017-11-061.90 ppb
2017-11-062.00 ppb
2017-11-071.40 ppb
2017-11-073.00 ppb
2017-11-072.70 ppb
2017-11-083.00 ppb
2017-11-082.40 ppb
2017-11-082.30 ppb
2017-11-082.30 ppb
2017-11-083.00 ppb
2017-11-081.40 ppb
2017-11-082.20 ppb
2017-11-082.50 ppb
2017-11-082.20 ppb
2017-12-043.80 ppb
2017-12-042.90 ppb
2017-12-042.90 ppb
2017-12-043.00 ppb
2017-12-042.50 ppb
2017-12-043.00 ppb
2017-12-043.00 ppb
2017-12-043.80 ppb
2017-12-043.60 ppb
2017-12-043.00 ppb
2017-12-053.60 ppb
2017-12-053.20 ppb
2017-12-052.90 ppb
2017-12-051.000 ppb
2017-12-053.00 ppb
2017-12-064.60 ppb
2018-01-022.50 ppb
2018-01-021.80 ppb
2018-01-022.40 ppb
2018-01-022.20 ppb
2018-01-022.10 ppb
2018-01-022.00 ppb
2018-01-023.30 ppb
2018-01-023.30 ppb
2018-01-023.00 ppb
2018-01-033.00 ppb
2018-01-032.40 ppb
2018-01-032.50 ppb
2018-01-032.50 ppb
2018-01-042.20 ppb
2018-01-043.20 ppb
2018-01-083.00 ppb
2018-02-052.00 ppb
2018-02-051.40 ppb
2018-02-052.70 ppb
2018-02-053.10 ppb
2018-02-053.20 ppb
2018-02-053.00 ppb
2018-02-053.30 ppb
2018-02-062.00 ppb
2018-02-062.60 ppb
2018-02-062.90 ppb
2018-02-071.90 ppb
2018-02-072.90 ppb
2018-02-072.60 ppb
2018-02-072.30 ppb
2018-02-073.00 ppb
2018-02-072.70 ppb
2018-03-052.60 ppb
2018-03-052.60 ppb
2018-03-052.70 ppb
2018-03-052.60 ppb
2018-03-051.80 ppb
2018-03-052.40 ppb
2018-03-052.50 ppb
2018-03-052.50 ppb
2018-03-052.60 ppb
2018-03-051.60 ppb
2018-03-052.30 ppb
2018-03-052.50 ppb
2018-03-051.80 ppb
2018-03-062.40 ppb
2018-03-062.50 ppb
2018-03-071.80 ppb
2018-04-023.20 ppb
2018-04-023.20 ppb
2018-04-033.20 ppb
2018-04-033.20 ppb
2018-04-033.10 ppb
2018-04-031.30 ppb
2018-04-032.30 ppb
2018-04-033.20 ppb
2018-04-033.10 ppb
2018-04-031.20 ppb
2018-04-042.20 ppb
2018-04-041.20 ppb
2018-04-043.50 ppb
2018-04-043.00 ppb
2018-04-040.900 ppb
2018-04-043.20 ppb
2018-06-041.90 ppb
2018-06-044.40 ppb
2018-06-04ND
2018-06-042.80 ppb
2018-06-041.50 ppb
2018-06-041.50 ppb
2018-06-042.80 ppb
2018-06-041.80 ppb
2018-06-041.40 ppb
2018-06-042.00 ppb
2018-06-040.500 ppb
2018-06-043.70 ppb
2018-06-041.40 ppb
2018-06-041.60 ppb
2018-06-044.60 ppb
2018-06-051.40 ppb
2018-09-042.60 ppb
2018-09-051.60 ppb
2018-09-051.60 ppb
2018-09-052.00 ppb
2018-09-052.60 ppb
2018-09-051.70 ppb
2018-09-052.10 ppb
2018-09-05ND
2018-09-052.30 ppb
2018-09-052.20 ppb
2018-09-052.40 ppb
2018-09-052.30 ppb
2018-09-052.20 ppb
2018-09-052.00 ppb
2018-09-052.00 ppb
2018-09-062.00 ppb
2018-12-041.20 ppb
2018-12-042.40 ppb
2018-12-042.20 ppb
2018-12-042.30 ppb
2018-12-042.50 ppb
2018-12-042.50 ppb
2018-12-041.40 ppb
2018-12-04ND
2018-12-041.50 ppb
2018-12-04ND
2018-12-041.90 ppb
2018-12-042.30 ppb
2018-12-042.60 ppb
2018-12-042.40 ppb
2018-12-042.60 ppb
2018-12-052.10 ppb
2019-03-041.40 ppb
2019-03-042.90 ppb
2019-03-042.50 ppb
2019-03-042.80 ppb
2019-03-041.20 ppb
2019-03-042.90 ppb
2019-03-043.20 ppb
2019-03-053.10 ppb
2019-03-053.00 ppb
2019-03-053.20 ppb
2019-03-052.50 ppb
2019-03-053.30 ppb
2019-03-053.20 ppb
2019-03-053.40 ppb
2019-03-052.50 ppb
2019-03-051.10 ppb
2019-06-033.90 ppb
2019-06-032.60 ppb
2019-06-031.80 ppb
2019-06-032.60 ppb
2019-06-03ND
2019-06-032.50 ppb
2019-06-032.90 ppb
2019-06-053.40 ppb
2019-06-051.90 ppb
2019-06-052.70 ppb
2019-06-052.40 ppb
2019-06-051.90 ppb
2019-06-052.70 ppb
2019-06-051.90 ppb
2019-06-052.80 ppb
2019-06-052.40 ppb
2019-09-101.10 ppb
2019-09-111.40 ppb
2019-09-111.20 ppb
2019-09-111.20 ppb
2019-09-111.20 ppb
2019-09-111.20 ppb
2019-09-111.30 ppb
2019-09-111.20 ppb
2019-09-111.10 ppb
2019-09-111.000 ppb
2019-09-111.10 ppb
2019-09-11ND
2019-09-111.30 ppb
2019-09-110.800 ppb
2019-09-111.40 ppb
2019-09-111.20 ppb
2019-12-022.20 ppb
2019-12-022.00 ppb
2019-12-022.20 ppb
2019-12-022.40 ppb
2019-12-031.90 ppb
2019-12-032.50 ppb
2019-12-042.40 ppb
2019-12-042.50 ppb
2019-12-041.50 ppb
2019-12-040.900 ppb
2019-12-040.700 ppb
2019-12-042.20 ppb
2019-12-042.40 ppb
2019-12-040.600 ppb
2019-12-051.50 ppb
2019-12-052.40 ppb