Menu

EWG's Tap Water Database — 2019 UPDATE

Donate

Dibromochloromethane

City of Port Angeles

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.

 

80

Samples

0

Samples exceeding legal limit (MCL)

61

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20120.875 ppb440.600 ppb - 1.000 ppb
20130.967 ppb330.700 ppb - 1.20 ppb
20140.411 ppb1910ND - 1.20 ppb
20150.600 ppb1712ND - 1.40 ppb
20161.01 ppb1816ND - 2.40 ppb
20170.821 ppb1916ND - 2.00 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
2012-01-04006870.900 ppb
2012-04-26153261.000 ppb
2012-07-05255890.600 ppb
2012-10-03399391.000 ppb
2013-01-09014651.20 ppb
2013-04-11141861.000 ppb
2013-08-21357190.700 ppb
2014-01-0200270ND
2014-01-15026290.500 ppb
2014-01-1502628ND
2014-01-1502627ND
2014-01-1502630ND
2014-04-10154020.800 ppb
2014-04-10153990.800 ppb
2014-04-1015400ND
2014-04-10154011.20 ppb
2014-07-1731433ND
2014-07-17314391.20 ppb
2014-07-1731436ND
2014-07-1731437ND
2014-07-17314380.600 ppb
2014-10-15465450.700 ppb
2014-10-15465560.600 ppb
2014-10-15465540.700 ppb
2014-10-15465550.700 ppb
2014-11-2052142ND
2015-01-1402340ND
2015-01-14023410.900 ppb
2015-01-14023420.600 ppb
2015-01-1402343ND
2015-03-3113518ND
2015-04-1516263ND
2015-04-1516264ND
2015-04-15162660.600 ppb
2015-04-15162650.500 ppb
2015-07-16328100.700 ppb
2015-07-16328121.10 ppb
2015-07-16328130.800 ppb
2015-07-16328110.700 ppb
2015-10-14497421.000 ppb
2015-10-14497401.000 ppb
2015-10-14497411.40 ppb
2015-10-14497430.900 ppb
2016-01-270.900 ppb
2016-01-272.40 ppb
2016-01-271.30 ppb
2016-01-271.30 ppb
2016-05-041.60 ppb
2016-05-040.900 ppb
2016-05-040.700 ppb
2016-05-040.700 ppb
2016-07-280.800 ppb
2016-07-281.80 ppb
2016-07-280.800 ppb
2016-07-281.000 ppb
2016-09-14ND
2016-10-060.800 ppb
2016-10-061.70 ppb
2016-10-060.600 ppb
2016-10-060.800 ppb
2016-10-06ND
2017-02-15ND
2017-02-150.900 ppb
2017-02-151.50 ppb
2017-02-150.600 ppb
2017-02-150.900 ppb
2017-05-100.600 ppb
2017-05-101.20 ppb
2017-05-100.800 ppb
2017-05-100.800 ppb
2017-05-10ND
2017-08-02ND
2017-08-020.600 ppb
2017-08-020.800 ppb
2017-08-020.900 ppb
2017-08-021.50 ppb
2017-10-110.800 ppb
2017-10-110.800 ppb
2017-10-112.00 ppb
2017-10-110.900 ppb