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Bromodichloromethane

Farmington City Water System

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.

 

61

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20100.190 ppb102ND - 1.20 ppb
20110.550 ppb43ND - 0.800 ppb
20120.688 ppb86ND - 1.000 ppb
20130.835 ppb2010ND - 4.50 ppb
20140.230 ppb104ND - 0.700 ppb
20150.800 ppb97ND - 1.70 ppb

ppb = parts per billion.

State and national drinking water standards and health guidelines

Health Guideline 0.06 ppb

The 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.

EPA Maximum Contaminant
Level Goal (MCLG)0 ppb

A non-enforceable federal health guideline. For cancer-causing chemicals, these health goals are typically set to zero.

ppb = parts per billion.

All test results

Date Result
2010-09-08ND
2010-09-08ND
2010-09-08ND
2010-09-08ND
2010-09-13ND
2010-09-130.700 ppb
2010-09-13ND
2010-09-13ND
2010-09-131.20 ppb
2010-09-13ND
2011-08-03ND
2011-08-030.700 ppb
2011-08-030.800 ppb
2011-08-030.700 ppb
2012-09-111.000 ppb
2012-09-111.000 ppb
2012-09-11ND
2012-09-110.900 ppb
2012-12-04ND
2012-12-040.900 ppb
2012-12-040.800 ppb
2012-12-040.900 ppb
2013-06-241.20 ppb
2013-06-240.800 ppb
2013-06-240.600 ppb
2013-06-24ND
2013-08-274.50 ppb
2013-08-273.30 ppb
2013-08-272.30 ppb
2013-08-271.80 ppb
2013-11-05ND
2013-11-05ND
2013-11-05ND
2013-11-05ND
2013-11-06ND
2013-11-06ND
2013-11-06ND
2013-11-06ND
2013-12-170.600 ppb
2013-12-17ND
2013-12-170.900 ppb
2013-12-170.700 ppb
2014-02-27ND
2014-02-270.500 ppb
2014-03-18ND
2014-03-18ND
2014-06-170.600 ppb
2014-06-17ND
2014-09-170.700 ppb
2014-09-17ND
2014-12-11ND
2014-12-110.500 ppb
2015-03-100.800 ppb
2015-03-100.900 ppb
2015-06-11ND
2015-06-111.70 ppb
2015-06-110.800 ppb
2015-09-231.10 ppb
2015-09-231.10 ppb
2015-12-09ND
2015-12-090.800 ppb