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EWG's Tap Water Database — 2021 UPDATE

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Dibromochloromethane

Burlington Water Department

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

 

305

Samples

0

Samples exceeding legal limit (MCL)

220

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20142.62 ppb4223ND - 8.50 ppb
20153.99 ppb5240ND - 8.60 ppb
20164.19 ppb6143ND - 13.0 ppb
20173.95 ppb5940ND - 11.0 ppb
20184.61 ppb4835ND - 11.0 ppb
20194.99 ppb4339ND - 9.90 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
2014-02-041.80 ppb
2014-02-041.70 ppb
2014-03-042.20 ppb
2014-03-041.70 ppb
2014-05-226.30 ppb
2014-06-057.30 ppb
2014-06-056.20 ppb
2014-06-051.60 ppb
2014-06-136.60 ppb
2014-06-17ND
2014-06-187.90 ppb
2014-06-182.20 ppb
2014-07-01ND
2014-07-02ND
2014-07-03ND
2014-07-11ND
2014-07-17ND
2014-07-188.00 ppb
2014-07-23ND
2014-07-258.50 ppb
2014-07-29ND
2014-08-017.60 ppb
2014-08-047.30 ppb
2014-08-042.00 ppb
2014-08-07ND
2014-08-12ND
2014-08-12ND
2014-08-22ND
2014-08-30ND
2014-09-052.30 ppb
2014-09-05ND
2014-09-05ND
2014-09-102.30 ppb
2014-09-10ND
2014-10-167.20 ppb
2014-10-16ND
2014-11-046.00 ppb
2014-11-042.70 ppb
2014-11-207.50 ppb
2014-11-20ND
2014-12-11ND
2014-12-223.10 ppb
2015-01-20ND
2015-01-213.00 ppb
2015-02-033.10 ppb
2015-02-032.90 ppb
2015-02-034.30 ppb
2015-02-034.90 ppb
2015-02-034.30 ppb
2015-02-034.70 ppb
2015-02-13ND
2015-02-243.10 ppb
2015-02-243.20 ppb
2015-02-243.30 ppb
2015-03-06ND
2015-03-173.40 ppb
2015-04-145.20 ppb
2015-04-16ND
2015-05-056.80 ppb
2015-05-052.10 ppb
2015-05-058.10 ppb
2015-05-056.90 ppb
2015-05-055.30 ppb
2015-05-057.20 ppb
2015-05-066.80 ppb
2015-05-06ND
2015-06-018.60 ppb
2015-06-01ND
2015-06-022.00 ppb
2015-07-102.20 ppb
2015-07-10ND
2015-07-228.30 ppb
2015-08-037.40 ppb
2015-08-031.80 ppb
2015-08-038.00 ppb
2015-08-035.70 ppb
2015-08-036.50 ppb
2015-08-036.20 ppb
2015-08-04ND
2015-08-077.00 ppb
2015-09-088.40 ppb
2015-09-08ND
2015-10-057.50 ppb
2015-10-162.00 ppb
2015-10-16ND
2015-11-042.30 ppb
2015-11-045.30 ppb
2015-11-045.60 ppb
2015-11-044.60 ppb
2015-11-047.90 ppb
2015-11-05ND
2015-11-196.50 ppb
2015-12-09ND
2015-12-165.30 ppb
2016-01-112.10 ppb
2016-01-11ND
2016-01-11ND
2016-01-11ND
2016-01-11ND
2016-01-11ND
2016-01-11ND
2016-01-110.580 ppb
2016-01-144.90 ppb
2016-01-14ND
2016-02-015.30 ppb
2016-02-012.10 ppb
2016-02-014.80 ppb
2016-02-014.90 ppb
2016-02-014.40 ppb
2016-02-015.10 ppb
2016-02-08ND
2016-02-124.40 ppb
2016-02-183.80 ppb
2016-02-181.70 ppb
2016-03-105.30 ppb
2016-03-10ND
2016-04-01ND
2016-04-227.20 ppb
2016-05-028.00 ppb
2016-05-029.60 ppb
2016-05-029.40 ppb
2016-05-029.20 ppb
2016-05-0210.00 ppb
2016-05-096.40 ppb
2016-05-242.30 ppb
2016-05-24ND
2016-05-312.30 ppb
2016-06-037.50 ppb
2016-06-03ND
2016-07-11ND
2016-07-159.60 ppb
2016-07-152.30 ppb
2016-08-0111.0 ppb
2016-08-012.30 ppb
2016-08-0113.0 ppb
2016-08-01ND
2016-08-018.00 ppb
2016-08-014.90 ppb
2016-08-0110.00 ppb
2016-08-1511.0 ppb
2016-09-1511.0 ppb
2016-09-26ND
2016-10-06ND
2016-10-132.20 ppb
2016-10-198.20 ppb
2016-11-096.40 ppb
2016-11-092.30 ppb
2016-11-095.40 ppb
2016-11-095.70 ppb
2016-11-093.90 ppb
2016-11-095.30 ppb
2016-11-21ND
2016-11-296.40 ppb
2016-12-055.50 ppb
2016-12-23ND
2017-01-234.80 ppb
2017-01-23ND
2017-02-074.50 ppb
2017-02-082.00 ppb
2017-02-083.90 ppb
2017-02-08ND
2017-02-084.00 ppb
2017-02-083.80 ppb
2017-02-084.90 ppb
2017-02-214.40 ppb
2017-02-222.20 ppb
2017-02-22ND
2017-02-22ND
2017-02-22ND
2017-02-22ND
2017-02-22ND
2017-02-22ND
2017-02-22ND
2017-03-10ND
2017-03-174.90 ppb
2017-03-174.70 ppb
2017-03-172.00 ppb
2017-04-032.20 ppb
2017-04-03ND
2017-04-185.80 ppb
2017-05-036.80 ppb
2017-05-037.20 ppb
2017-05-037.60 ppb
2017-05-037.30 ppb
2017-05-037.80 ppb
2017-05-227.00 ppb
2017-05-25ND
2017-06-278.20 ppb
2017-06-27ND
2017-07-196.50 ppb
2017-07-19ND
2017-08-097.20 ppb
2017-08-092.00 ppb
2017-08-098.50 ppb
2017-08-094.60 ppb
2017-08-094.80 ppb
2017-08-097.70 ppb
2017-08-258.50 ppb
2017-08-281.80 ppb
2017-08-28ND
2017-09-228.40 ppb
2017-09-22ND
2017-10-237.10 ppb
2017-10-30ND
2017-11-069.10 ppb
2017-11-063.10 ppb
2017-11-0610.00 ppb
2017-11-068.80 ppb
2017-11-0610.00 ppb
2017-11-0611.0 ppb
2017-11-27ND
2017-12-04ND
2017-12-195.80 ppb
2017-12-292.00 ppb
2018-01-264.70 ppb
2018-01-26ND
2018-02-055.90 ppb
2018-02-057.10 ppb
2018-02-057.60 ppb
2018-02-057.10 ppb
2018-02-057.50 ppb
2018-02-26ND
2018-03-145.20 ppb
2018-03-235.50 ppb
2018-03-23ND
2018-04-246.80 ppb
2018-04-26ND
2018-05-078.00 ppb
2018-05-077.20 ppb
2018-05-077.20 ppb
2018-05-077.50 ppb
2018-05-087.20 ppb
2018-05-082.40 ppb
2018-05-25ND
2018-06-26ND
2018-06-291.90 ppb
2018-07-1211.0 ppb
2018-07-232.50 ppb
2018-07-23ND
2018-07-2610.00 ppb
2018-08-092.60 ppb
2018-08-096.10 ppb
2018-08-09ND
2018-08-094.90 ppb
2018-08-099.30 ppb
2018-08-23ND
2018-08-2410.00 ppb
2018-08-293.00 ppb
2018-09-188.20 ppb
2018-09-21ND
2018-10-19ND
2018-10-247.00 ppb
2018-11-076.70 ppb
2018-11-072.90 ppb
2018-11-077.60 ppb
2018-11-078.50 ppb
2018-11-077.50 ppb
2018-11-078.00 ppb
2018-11-16ND
2018-11-272.20 ppb
2018-12-07ND
2018-12-314.40 ppb
2019-01-10ND
2019-01-154.60 ppb
2019-02-044.70 ppb
2019-02-045.80 ppb
2019-02-046.20 ppb
2019-02-046.50 ppb
2019-02-046.40 ppb
2019-02-052.70 ppb
2019-02-052.60 ppb
2019-02-074.70 ppb
2019-02-08ND
2019-03-254.50 ppb
2019-03-25ND
2019-04-11ND
2019-04-236.10 ppb
2019-05-062.30 ppb
2019-05-064.70 ppb
2019-05-061.40 ppb
2019-05-064.50 ppb
2019-05-066.40 ppb
2019-05-145.80 ppb
2019-06-111.30 ppb
2019-06-112.73 ppb
2019-07-028.10 ppb
2019-07-022.90 ppb
2019-08-058.70 ppb
2019-08-053.10 ppb
2019-08-059.90 ppb
2019-08-055.40 ppb
2019-08-055.20 ppb
2019-08-059.30 ppb
2019-09-207.70 ppb
2019-09-202.70 ppb
2019-10-297.00 ppb
2019-10-292.82 ppb
2019-11-047.50 ppb
2019-11-044.40 ppb
2019-11-048.30 ppb
2019-11-048.60 ppb
2019-11-048.50 ppb
2019-11-048.90 ppb
2019-12-233.58 ppb
2019-12-238.03 ppb