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EWG's Tap Water Database — 2021 UPDATE

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Bromodichloromethane

Yuima Municipal Water District Ida

Bromodichloromethane, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Bromodichloromethane 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

 

56

Samples

0

Samples exceeding legal limit (MCL)

6

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.640 ppb101ND - 6.40 ppb
20150.667 ppb61ND - 4.00 ppb
20160.300 ppb81ND - 2.40 ppb
20170.105 ppb191ND - 2.00 ppb
20181.03 ppb61ND - 6.20 ppb
20190.457 ppb71ND - 3.20 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.06 ppb

The EWG Health Guideline of 0.06 ppb for bromodichloromethane 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
2014-01-142706-012-0820ND
2014-04-082706-044-0900ND
2014-04-082706-012-1250ND
2014-07-082706-043-0855ND
2014-07-082706-031-1030ND
2014-07-082706-012-1000ND
2014-07-082706-006-1040ND
2014-08-122706-045-1050ND
2014-09-092706-900-11006.40 ppb
2014-10-142706-012-1045ND
2015-01-132706-012-0850ND
2015-04-142706-012-0945ND
2015-07-142706-005-1150ND
2015-07-142706-012-1030ND
2015-09-082706-900-11404.00 ppb
2015-10-222706-012-1052ND
2016-01-122706-012-0815ND
2016-03-102706-048-1130ND
2016-04-122706-012-1100ND
2016-07-122706-012-0830ND
2016-09-132706-900-08452.40 ppb
2016-10-112706-012-1015ND
2016-10-142706-048-1100ND
2016-12-132706-048-1050ND
2017-01-102706-012-1130ND
2017-04-112706-012-1040ND
2017-05-092706-048-1040ND
2017-05-092706-037-1050ND
2017-06-132706-029-1045ND
2017-07-112706-011-0945ND
2017-07-112706-048-0815ND
2017-07-112706-006-1045ND
2017-07-112706-004-0845ND
2017-07-112706-047-0915ND
2017-07-112706-033-0840ND
2017-07-112706-032-0845ND
2017-07-112706-031-1125ND
2017-07-112706-028-1140ND
2017-07-112706-020-0745ND
2017-08-082706-012-0915ND
2017-09-122706-900-08302.00 ppb
2017-09-122706-007-0912ND
2017-10-102706-012-1105ND
2018-01-092706-012-0920ND
2018-04-102706-012-0800ND
2018-07-102706-005-0830ND
2018-07-102706-012-0800ND
2018-09-112706-900-10156.20 ppb
2018-10-092706-012-1105ND
2019-01-082706-012-0815ND
2019-04-092706-012-1125ND
2019-04-092706-042-0815ND
2019-06-112706-041-0800ND
2019-07-092706-012-0845ND
2019-09-102706-900-09453.20 ppb
2019-10-082706-012-0900ND