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Dibromochloromethane

Forrest City Waterworks

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.

 

86

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20100.485 ppb146ND - 2.10 ppb
20110.000636 ppb111ND - 0.00700 ppb
20120.150 ppb101ND - 1.50 ppb
20130.754 ppb188ND - 7.70 ppb
20141.86 ppb239ND - 17.1 ppb
20151.81 ppb102ND - 14.5 ppb

ppb = parts per billion.

State and national drinking water standards and health guidelines

Health Guideline 0.1 ppb

The 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.

EPA Maximum Contaminant
Level Goal (MCLG)60.0 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 Lab ID Result
2010-02-1010042000701ND
2010-02-1010042000601ND
2010-05-2510146004501ND
2010-05-25101460044010.690 ppb
2010-05-2510146004601ND
2010-06-29101810042022.10 ppb
2010-07-28102100062031.000 ppb
2010-07-28102100061031.000 ppb
2010-07-2810210006109ND
2010-07-2810210006209ND
2010-11-16103210009031.000 ppb
2010-11-1610321000909ND
2010-11-16103210008031.000 ppb
2010-11-1610321000809ND
2011-03-1411076001001ND
2011-03-1411076000901ND
2011-05-2511146008601ND
2011-05-25111460080030.00700 ppb
2011-05-2511146008009ND
2011-06-1711168000301ND
2011-08-0311216001001ND
2011-08-0311216000103ND
2011-08-3111244001502ND
2011-11-2911335000701ND
2011-11-2911335000801ND
2012-01-2512026006001ND
2012-01-2512026006101ND
2012-06-1312166002901ND
2012-06-1312166003101ND
2012-06-1312166003001ND
2012-08-2712242003701ND
2012-08-27122420033021.50 ppb
2012-08-2712242003801ND
2012-10-0212278013901ND
2012-10-0212278014001ND
2013-02-1213044000801ND
2013-02-1213044000901ND
2013-04-0113094007201ND
2013-04-0113094007101ND
2013-04-0113094007301ND
2013-08-27132410002030.278 ppb
2013-08-27132410003030.512 ppb
2013-08-2713241000309ND
2013-08-27132410009021.80 ppb
2013-08-2713241000209ND
2013-11-0513310000809ND
2013-11-05133100009030.149 ppb
2013-11-05133100008030.224 ppb
2013-11-0513310000909ND
2013-11-26133310046021.60 ppb
2013-11-26133310047027.70 ppb
2013-11-26133310049021.30 ppb
2013-11-2613331004802ND
2014-02-0514038000701ND
2014-02-0514038000602ND
2014-03-17140790010021.40 ppb
2014-03-17140790013021.30 ppb
2014-03-17140790012025.30 ppb
2014-03-1714079001102ND
2014-04-2314114013809ND
2014-04-2314114014002ND
2014-04-2314114014301ND
2014-04-23141140138030.241 ppb
2014-06-251417700880213.7 ppb
2014-06-25141770089021.30 ppb
2014-06-25141770091021.30 ppb
2014-06-2514177009002ND
2014-08-2714240000702ND
2014-08-2714240002902ND
2014-08-271424000310217.1 ppb
2014-08-27142400030021.20 ppb
2014-08-2714240001201ND
2014-08-2714240000603ND
2014-08-2714240002502ND
2014-11-2414330003801ND
2014-11-2414330003701ND
2015-01-1215015008601ND
2015-01-1215015008501ND
2015-04-0815099007201ND
2015-04-0815099007301ND
2015-04-08150990099023.60 ppb
2015-08-2415238000602ND
2015-08-2415238000701ND
2015-08-241523800080214.5 ppb
2015-12-0115337004901ND
2015-12-0115337004801ND