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EWG's Tap Water Database — 2019 UPDATE

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Bromodichloromethane

Littlerock Creek Irrigation District

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.

 

46

Samples

0

Samples exceeding legal limit (MCL)

23

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
20132.67 ppb64ND - 11.9 ppb
20140.200 ppb71ND - 1.40 ppb
20151.21 ppb117ND - 3.50 ppb
20161.21 ppb127ND - 3.20 ppb
20170.560 ppb104ND - 1.80 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
2013-02-053761-800-081511.9 ppb
2013-03-193761-800-08151.10 ppb
2013-05-073761-801-08001.80 ppb
2013-05-073761-800-0815ND
2013-08-063761-800-08301.20 ppb
2013-11-053761-800-0830ND
2014-02-043761-800-0800ND
2014-03-043761-021-0900ND
2014-03-043761-019-0845ND
2014-03-043761-011-0830ND
2014-03-043761-008-0800ND
2014-05-063761-800-0900ND
2014-08-053761-800-08351.40 ppb
2015-02-033761-800-08501.20 ppb
2015-05-053761-801-09301.70 ppb
2015-05-053761-800-10001.20 ppb
2015-08-043761-011-0750ND
2015-08-043761-019-0800ND
2015-08-043761-021-0825ND
2015-08-043761-008-0740ND
2015-08-043761-801-09102.80 ppb
2015-08-043761-800-08451.50 ppb
2015-11-063761-800-09301.40 ppb
2015-11-063761-801-09003.50 ppb
2016-02-023761-800-09001.90 ppb
2016-02-023761-801-09151.70 ppb
2016-05-033761-800-08151.30 ppb
2016-05-033761-801-08452.60 ppb
2016-08-023761-008-0818ND
2016-08-023761-011-0827ND
2016-08-023761-021-0833ND
2016-08-023761-801-09051.80 ppb
2016-08-023761-800-09182.00 ppb
2016-08-093761-019-0900ND
2016-11-013761-801-09003.20 ppb
2016-11-013761-800-0845ND
2017-02-133761-801-16451.10 ppb
2017-02-133761-800-1630ND
2017-05-093761-801-09101.10 ppb
2017-05-093761-800-0845ND
2017-08-153761-021-0945ND
2017-08-153761-019-0930ND
2017-08-153761-011-0915ND
2017-08-153761-008-0900ND
2017-11-073761-801-08151.80 ppb
2017-11-073761-800-08301.60 ppb