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EWG's Tap Water Database — 2021 UPDATE

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Dibromochloromethane

Highline Water District

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

 

192

Samples

0

Samples exceeding legal limit (MCL)

134

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20141.19 ppb2826ND - 1.90 ppb
20151.54 ppb33330.600 ppb - 3.10 ppb
20161.16 ppb3329ND - 2.05 ppb
20170.872 ppb3224ND - 2.00 ppb
20180.0773 ppb333ND - 1.18 ppb
20190.914 ppb3319ND - 3.04 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
2014-03-04039671.70 ppb
2014-03-04039661.20 ppb
2014-03-04039681.40 ppb
2014-03-04039691.60 ppb
2014-06-06102661.40 ppb
2014-06-06102701.90 ppb
2014-06-06102670.900 ppb
2014-06-06102730.900 ppb
2014-06-06102721.80 ppb
2014-06-06102711.50 ppb
2014-06-06102681.50 ppb
2014-06-06102691.50 ppb
2014-09-04162681.30 ppb
2014-09-04162691.50 ppb
2014-09-04162660.800 ppb
2014-09-04162671.50 ppb
2014-09-04162701.70 ppb
2014-09-04162651.20 ppb
2014-09-04162721.30 ppb
2014-09-04162711.40 ppb
2014-12-04011431.000 ppb
2014-12-04011410.900 ppb
2014-12-04011451.000 ppb
2014-12-0401147ND
2014-12-04011420.700 ppb
2014-12-04011440.800 ppb
2014-12-0401148ND
2014-12-04011460.800 ppb
2015-03-04596052.46 ppb
2015-03-04596072.44 ppb
2015-03-04596042.33 ppb
2015-03-04596011.97 ppb
2015-03-04596032.98 ppb
2015-03-04596082.49 ppb
2015-03-04596061.39 ppb
2015-03-04596021.22 ppb
2015-03-30748523.10 ppb
2015-06-03305081.31 ppb
2015-06-03305071.63 ppb
2015-06-03305061.02 ppb
2015-06-03305052.01 ppb
2015-06-03305041.18 ppb
2015-06-03305030.600 ppb
2015-06-03305021.06 ppb
2015-06-03305010.980 ppb
2015-09-10958081.32 ppb
2015-09-10958071.73 ppb
2015-09-10958061.11 ppb
2015-09-10958051.91 ppb
2015-09-10958041.37 ppb
2015-09-10958031.67 ppb
2015-09-10958021.12 ppb
2015-09-10958011.31 ppb
2015-12-01639080.750 ppb
2015-12-01639071.43 ppb
2015-12-01639060.780 ppb
2015-12-01639051.77 ppb
2015-12-01639040.650 ppb
2015-12-01639031.28 ppb
2015-12-01639020.690 ppb
2015-12-01639011.65 ppb
2016-03-091.69 ppb
2016-03-091.42 ppb
2016-03-091.16 ppb
2016-03-091.51 ppb
2016-03-090.920 ppb
2016-03-090.840 ppb
2016-03-091.63 ppb
2016-03-091.23 ppb
2016-05-270.700 ppb
2016-06-08ND
2016-06-080.650 ppb
2016-06-081.22 ppb
2016-06-08ND
2016-06-08ND
2016-06-08ND
2016-06-080.650 ppb
2016-06-080.520 ppb
2016-09-081.81 ppb
2016-09-081.60 ppb
2016-09-081.37 ppb
2016-09-081.55 ppb
2016-09-081.01 ppb
2016-09-081.29 ppb
2016-09-081.49 ppb
2016-09-081.15 ppb
2016-12-071.21 ppb
2016-12-071.99 ppb
2016-12-071.57 ppb
2016-12-071.57 ppb
2016-12-072.05 ppb
2016-12-071.54 ppb
2016-12-071.26 ppb
2016-12-071.76 ppb
2017-03-071.24 ppb
2017-03-071.62 ppb
2017-03-071.30 ppb
2017-03-072.00 ppb
2017-03-071.73 ppb
2017-03-071.69 ppb
2017-03-071.31 ppb
2017-03-071.21 ppb
2017-06-071.12 ppb
2017-06-071.73 ppb
2017-06-070.740 ppb
2017-06-071.20 ppb
2017-06-071.08 ppb
2017-06-071.54 ppb
2017-06-071.45 ppb
2017-06-071.12 ppb
2017-09-060.760 ppb
2017-09-06ND
2017-09-060.850 ppb
2017-09-060.830 ppb
2017-09-060.700 ppb
2017-09-060.770 ppb
2017-09-060.710 ppb
2017-09-060.560 ppb
2017-12-07ND
2017-12-07ND
2017-12-07ND
2017-12-07ND
2017-12-07ND
2017-12-07ND
2017-12-07ND
2017-12-070.650 ppb
2018-03-06ND
2018-03-06ND
2018-03-06ND
2018-03-06ND
2018-03-06ND
2018-03-06ND
2018-03-06ND
2018-03-061.18 ppb
2018-06-06ND
2018-06-06ND
2018-06-06ND
2018-06-06ND
2018-06-06ND
2018-06-06ND
2018-06-06ND
2018-06-06ND
2018-09-050.760 ppb
2018-09-05ND
2018-09-05ND
2018-09-05ND
2018-09-05ND
2018-09-05ND
2018-09-05ND
2018-09-050.610 ppb
2018-10-04ND
2018-12-05ND
2018-12-05ND
2018-12-05ND
2018-12-05ND
2018-12-05ND
2018-12-05ND
2018-12-05ND
2018-12-05ND
2019-03-06ND
2019-03-06ND
2019-03-06ND
2019-03-06ND
2019-03-06ND
2019-03-06ND
2019-03-06ND
2019-03-061.29 ppb
2019-06-05ND
2019-06-05ND
2019-06-05ND
2019-06-05ND
2019-06-05ND
2019-06-05ND
2019-06-05ND
2019-06-050.936 ppb
2019-09-051.78 ppb
2019-09-051.36 ppb
2019-09-052.63 ppb
2019-09-052.75 ppb
2019-09-051.38 ppb
2019-09-051.22 ppb
2019-09-053.04 ppb
2019-09-052.30 ppb
2019-09-180.960 ppb
2019-12-041.12 ppb
2019-12-041.000 ppb
2019-12-041.19 ppb
2019-12-041.01 ppb
2019-12-041.42 ppb
2019-12-041.37 ppb
2019-12-041.10 ppb
2019-12-042.29 ppb