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EWG's Tap Water Database — 2021 UPDATE

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Dibromochloromethane

City of Manassas Park

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

 

68

Samples

0

Samples exceeding legal limit (MCL)

64

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20142.05 ppb1614ND - 5.10 ppb
20152.99 ppb880.900 ppb - 4.40 ppb
20163.56 ppb12120.600 ppb - 8.00 ppb
20172.65 ppb1615ND - 5.30 ppb
2018N/A00N/A
20191.94 ppb1615ND - 3.80 ppb

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
2014-02-2414-02914THM0.600 ppb
2014-02-2414-02915THM0.600 ppb
2014-02-2414-02916THM1.80 ppb
2014-02-2414-02917THM2.00 ppb
2014-05-2914-08054THM4.40 ppb
2014-05-2914-08055THM5.10 ppb
2014-05-2914-08052THM0.500 ppb
2014-05-2914-08053THM0.700 ppb
2014-08-2714-13035THM0.900 ppb
2014-08-2714-13036HAA3.20 ppb
2014-08-2714-13037THM3.20 ppb
2014-08-2714-13034THMND
2014-11-2414-18197THM2.50 ppb
2014-11-2414-18199THM3.60 ppb
2014-11-2414-18198THM3.70 ppb
2014-11-2414-18196THMND
2015-08-25460013-JAMES R.4.40 ppb
2015-08-25460013-JAMES R.4.20 ppb
2015-08-25460013-JAMES R.0.900 ppb
2015-08-25460013-JAMES R.3.30 ppb
2015-11-23460013-JAMES R.2.10 ppb
2015-11-23460013-JAMES R.1.10 ppb
2015-11-23460013-JAMES R.3.50 ppb
2015-11-23460013-JAMES R.4.40 ppb
2016-02-2616-032371.70 ppb
2016-02-2616-03236THM1.50 ppb
2016-02-2616-03234THM0.600 ppb
2016-02-2616-03235THM0.900 ppb
2016-05-2616-09503THM1.000 ppb
2016-05-2616-09504THM3.90 ppb
2016-05-2616-09506THM4.90 ppb
2016-05-2616-09505THM6.00 ppb
2016-08-2416-15301THM5.20 ppb
2016-08-2416-15302THM7.40 ppb
2016-08-2416-15303THM8.00 ppb
2016-08-2416-15300THM1.60 ppb
2017-02-2417-03552 THM0.900 ppb
2017-02-2417-03555 THM3.40 ppb
2017-02-2417-03554 THM3.20 ppb
2017-02-2417-03553 THM2.80 ppb
2017-05-2217-08929 -THM3.90 ppb
2017-05-2217-08926 - THM1.30 ppb
2017-05-2217-08927 - THM3.20 ppb
2017-05-2217-08928 - THM2.70 ppb
2017-08-0217-15154 - THM1.000 ppb
2017-08-0217-15156 - THM4.30 ppb
2017-08-0217-15155 - THM4.40 ppb
2017-08-0217-15153 - THM0.700 ppb
2017-11-2117-22086-THM4.30 ppb
2017-11-2117-22085-THM1.000 ppb
2017-11-2117-22087-THM5.30 ppb
2017-11-2117-22084-THMND
2019-02-2219-03552-THM1.40 ppb
2019-02-2219-03551-THM1.60 ppb
2019-02-2219-03550-THM0.900 ppb
2019-02-2219-03549-THMND
2019-05-3119-09726-THM1.000 ppb
2019-05-3119-09727-THM3.10 ppb
2019-05-3119-09728-THM3.40 ppb
2019-05-3119-09729-THM3.80 ppb
2019-08-3019-15983-THM1.30 ppb
2019-08-3019-15984-THM2.80 ppb
2019-08-3019-15985-THM3.30 ppb
2019-08-3019-15986-THM3.30 ppb
2019-11-2519-215651.80 ppb
2019-11-2519-215641.80 ppb
2019-11-2519-215630.800 ppb
2019-11-2519-215620.800 ppb