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EWG's Tap Water Database — 2021 UPDATE

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Bromodichloromethane

City of Port Angeles

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.

MORE ABOUT THIS CONTAMINANT

 

108

Samples

0

Samples exceeding legal limit (MCL)

99

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20141.94 ppb1918ND - 3.80 ppb
20152.40 ppb17170.800 ppb - 5.20 ppb
20161.55 ppb1816ND - 3.70 ppb
20171.52 ppb1916ND - 3.50 ppb
20181.49 ppb1816ND - 3.70 ppb
20191.74 ppb1716ND - 4.40 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
2014-01-02002701.20 ppb
2014-01-15026271.80 ppb
2014-01-15026281.30 ppb
2014-01-15026301.60 ppb
2014-01-15026291.50 ppb
2014-04-10154022.60 ppb
2014-04-10154013.80 ppb
2014-04-10153992.40 ppb
2014-04-10154001.80 ppb
2014-07-17314371.40 ppb
2014-07-17314361.60 ppb
2014-07-17314392.80 ppb
2014-07-17314382.10 ppb
2014-07-17314330.500 ppb
2014-10-15465451.60 ppb
2014-10-15465553.70 ppb
2014-10-15465562.20 ppb
2014-10-15465542.90 ppb
2014-11-2052142ND
2015-01-14023401.50 ppb
2015-01-14023413.00 ppb
2015-01-14023421.90 ppb
2015-01-14023430.900 ppb
2015-03-31135181.000 ppb
2015-04-15162652.60 ppb
2015-04-15162662.30 ppb
2015-04-15162641.40 ppb
2015-04-15162630.800 ppb
2015-07-16328102.40 ppb
2015-07-16328124.00 ppb
2015-07-16328133.00 ppb
2015-07-16328112.50 ppb
2015-10-14497432.80 ppb
2015-10-14497415.20 ppb
2015-10-14497402.90 ppb
2015-10-14497422.60 ppb
2016-01-271.60 ppb
2016-01-271.60 ppb
2016-01-271.20 ppb
2016-01-273.60 ppb
2016-05-041.000 ppb
2016-05-041.10 ppb
2016-05-041.50 ppb
2016-05-043.70 ppb
2016-07-281.000 ppb
2016-07-280.900 ppb
2016-07-282.80 ppb
2016-07-281.40 ppb
2016-09-14ND
2016-10-061.10 ppb
2016-10-061.000 ppb
2016-10-063.20 ppb
2016-10-061.20 ppb
2016-10-06ND
2017-02-151.70 ppb
2017-02-151.50 ppb
2017-02-151.000 ppb
2017-02-152.90 ppb
2017-02-15ND
2017-05-101.80 ppb
2017-05-103.50 ppb
2017-05-101.10 ppb
2017-05-102.10 ppb
2017-05-10ND
2017-08-021.40 ppb
2017-08-020.900 ppb
2017-08-021.20 ppb
2017-08-022.80 ppb
2017-08-02ND
2017-10-111.30 ppb
2017-10-111.10 ppb
2017-10-113.30 ppb
2017-10-111.30 ppb
2018-01-311.30 ppb
2018-01-312.00 ppb
2018-01-313.70 ppb
2018-01-311.90 ppb
2018-01-31ND
2018-04-111.30 ppb
2018-04-113.10 ppb
2018-04-111.60 ppb
2018-04-111.000 ppb
2018-04-11ND
2018-07-130.900 ppb
2018-07-131.10 ppb
2018-07-132.30 ppb
2018-07-131.30 ppb
2018-10-241.40 ppb
2018-10-241.70 ppb
2018-10-241.40 ppb
2018-11-080.800 ppb
2019-01-171.000 ppb
2019-01-171.60 ppb
2019-01-173.10 ppb
2019-01-171.60 ppb
2019-04-101.10 ppb
2019-04-102.00 ppb
2019-04-103.40 ppb
2019-04-100.900 ppb
2019-05-16ND
2019-07-161.40 ppb
2019-07-160.700 ppb
2019-07-160.900 ppb
2019-07-162.90 ppb
2019-10-231.10 ppb
2019-10-232.10 ppb
2019-10-234.40 ppb
2019-10-231.40 ppb