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EWG's Tap Water Database — 2021 UPDATE

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Dibromochloromethane

Deer Meadows

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

 

51

Samples

0

Samples exceeding legal limit (MCL)

17

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.0743 ppb71ND - 0.520 ppb
20153.53 ppb91ND - 31.8 ppb
20160.300 ppb95ND - 0.700 ppb
20170.410 ppb107ND - 0.700 ppb
20180.225 ppb83ND - 0.600 ppb
2019ND80ND

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
2014-02-11L4938938-2ND
2014-02-11L4938938-1TTHMND
2014-05-23L5071443-2-TTHMND
2014-05-23L5071443-1-TTHMND
2014-09-08L5153552-1 VOC0.520 ppb
2014-11-17L5324690-2 TTHMND
2014-11-17L5324690-1 TTHMND
2015-02-19L5460345-2 TTHMND
2015-02-19L5460345-1 TTHMND
2015-05-13L5587870-2-TTHMND
2015-05-13L5587870-1-TTHM31.8 ppb
2015-05-13L5530435-1-VOCND
2015-08-10L5759336-2-TTHMND
2015-08-10L5759336-1-TTHMND
2015-11-09L5907614-2 TTHMND
2015-11-09L5907614-1ND
2016-02-03L6059012-2 TTHMND
2016-02-03L6059012-1 TTHMND
2016-05-16L6252647-2 TTHM0.500 ppb
2016-05-16L6252647-1 TTHM0.700 ppb
2016-06-29L6256139-1 VOCND
2016-08-04L6410388-2 TTHM0.500 ppb
2016-08-04L6410388-1 TTHMND
2016-11-07L6545207-2 TTHM0.500 ppb
2016-11-07L6545207-1 TTHM0.500 ppb
2017-02-10L6676117-2 TTHMND
2017-02-10L6676117-1 TTHMND
2017-02-16L6635158-1 VOC0.500 ppb
2017-05-11L6801512-2 TTHM0.600 ppb
2017-05-11L6801512-1 TTHM0.500 ppb
2017-08-10L6934204-2 TTHM0.700 ppb
2017-08-10L6934204-1 TTHMND
2017-11-07L6968860-10.700 ppb
2017-11-07L6968859-10.600 ppb
2017-11-21L6973325-1 TTHM0.500 ppb
2018-02-228022632-03 TTHM0.600 ppb
2018-02-228022632-01 TTHM0.600 ppb
2018-05-098051516-03 TTHMND
2018-05-098051516-02 TTHMND
2018-08-088076319-03 TTHM0.600 ppb
2018-08-088076319-02 TTHMND
2018-11-168111582-02 TTHMND
2018-11-168111582-01 TTHMND
2019-02-259021382-02 TTHMND
2019-02-259021382-01 TTHMND
2019-05-079051498-02 TTHMND
2019-05-079051498-01 TTHMND
2019-08-199076835-02 TTHMND
2019-08-199076835-01 TTHMND
2019-11-079105780-01 TTHMND
2019-11-079105780-02 TTHMND