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EWG's Tap Water Database — 2019 UPDATE

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Bromodichloromethane

California Water Service Company - Hermosa / Redondo Beach

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.

 

203

Samples

0

Samples exceeding legal limit (MCL)

192

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20128.58 ppb3432ND - 15.7 ppb
20139.26 ppb3432ND - 15.0 ppb
20148.49 ppb3432ND - 11.7 ppb
20158.94 ppb3432ND - 12.9 ppb
20168.28 ppb3432ND - 13.3 ppb
20179.25 ppb3332ND - 30.0 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
2012-03-065701-800-130614.4 ppb
2012-03-065701-801-112615.7 ppb
2012-03-065701-802-111315.2 ppb
2012-03-065701-803-14207.22 ppb
2012-03-065701-804-105113.2 ppb
2012-03-065701-805-133313.3 ppb
2012-03-065701-806-114915.3 ppb
2012-03-065701-807-13599.75 ppb
2012-06-055701-800-130711.9 ppb
2012-06-055701-801-095913.1 ppb
2012-06-055701-802-094612.5 ppb
2012-06-055701-803-15001.91 ppb
2012-06-055701-804-091811.0 ppb
2012-06-055701-805-15395.65 ppb
2012-06-055701-806-111612.4 ppb
2012-06-055701-807-15082.04 ppb
2012-06-185701-005-0900ND
2012-08-089590-001-1345ND
2012-09-045701-800-114011.1 ppb
2012-09-045701-801-094011.0 ppb
2012-09-045701-802-093211.2 ppb
2012-09-045701-803-14342.45 ppb
2012-09-045701-804-09059.13 ppb
2012-09-045701-805-15226.01 ppb
2012-09-045701-806-103711.7 ppb
2012-09-045701-807-14552.41 ppb
2012-12-045701-800-11066.52 ppb
2012-12-045701-801-09588.39 ppb
2012-12-045701-802-09469.02 ppb
2012-12-045701-803-14092.72 ppb
2012-12-045701-804-09319.10 ppb
2012-12-045701-805-13244.76 ppb
2012-12-045701-806-10368.20 ppb
2012-12-045701-807-14243.43 ppb
2013-03-065701-800-092010.0 ppb
2013-03-065701-801-094311.1 ppb
2013-03-065701-802-093511.2 ppb
2013-03-065701-803-09003.06 ppb
2013-03-065701-804-084212.1 ppb
2013-03-065701-805-09156.55 ppb
2013-03-065701-806-085710.8 ppb
2013-03-065701-807-09346.55 ppb
2013-06-045701-800-110415.0 ppb
2013-06-045701-801-102613.4 ppb
2013-06-045701-802-101613.6 ppb
2013-06-045701-803-13036.78 ppb
2013-06-045701-804-100213.1 ppb
2013-06-045701-805-140514.4 ppb
2013-06-045701-806-105114.1 ppb
2013-06-045701-807-13227.92 ppb
2013-06-195701-005-0917ND
2013-08-079590-001-1247ND
2013-09-035701-800-123013.1 ppb
2013-09-035701-801-093412.5 ppb
2013-09-035701-802-092012.5 ppb
2013-09-035701-803-14503.10 ppb
2013-09-035701-804-084911.8 ppb
2013-09-035701-805-153912.9 ppb
2013-09-035701-806-104511.2 ppb
2013-09-035701-807-15082.62 ppb
2013-12-105701-800-121210.4 ppb
2013-12-105701-801-093510.1 ppb
2013-12-105701-802-09258.98 ppb
2013-12-105701-803-14392.93 ppb
2013-12-105701-804-090010.0 ppb
2013-12-105701-805-15227.23 ppb
2013-12-105701-806-095913.2 ppb
2013-12-105701-807-14472.78 ppb
2014-03-045701-800-115110.5 ppb
2014-03-045701-801-09189.08 ppb
2014-03-045701-802-09079.77 ppb
2014-03-045701-803-14177.07 ppb
2014-03-045701-804-08467.75 ppb
2014-03-045701-805-150110.1 ppb
2014-03-045701-806-10339.25 ppb
2014-03-045701-807-14269.35 ppb
2014-06-035701-800-123810.6 ppb
2014-06-035701-801-094411.6 ppb
2014-06-035701-802-09339.96 ppb
2014-06-035701-803-14353.96 ppb
2014-06-035701-804-09109.98 ppb
2014-06-035701-805-152310.5 ppb
2014-06-035701-806-104910.2 ppb
2014-06-035701-807-14452.55 ppb
2014-06-255701-005-0925ND
2014-09-025701-800-130011.4 ppb
2014-09-025701-801-102511.6 ppb
2014-09-025701-802-101011.5 ppb
2014-09-025701-803-15003.58 ppb
2014-09-025701-804-094011.5 ppb
2014-09-025701-805-152511.1 ppb
2014-09-025701-806-113011.7 ppb
2014-09-025701-807-14452.54 ppb
2014-09-035701-001-1450ND
2014-12-025701-800-133210.7 ppb
2014-12-025701-801-10489.18 ppb
2014-12-025701-802-10349.50 ppb
2014-12-025701-803-14246.42 ppb
2014-12-025701-804-10109.08 ppb
2014-12-025701-805-10178.21 ppb
2014-12-025701-806-13389.87 ppb
2014-12-025701-807-13208.56 ppb
2015-03-035701-800-065510.3 ppb
2015-03-035701-801-065510.2 ppb
2015-03-035701-802-06559.97 ppb
2015-03-035701-803-06556.60 ppb
2015-03-035701-804-06559.73 ppb
2015-03-035701-805-06559.82 ppb
2015-03-035701-806-065510.4 ppb
2015-03-035701-807-06559.09 ppb
2015-06-025701-800-065310.9 ppb
2015-06-025701-801-065311.0 ppb
2015-06-025701-802-065310.4 ppb
2015-06-025701-803-06539.63 ppb
2015-06-025701-804-065310.9 ppb
2015-06-025701-805-065310.7 ppb
2015-06-025701-806-065310.7 ppb
2015-06-025701-807-06533.24 ppb
2015-06-175701-005-0950ND
2015-08-265701-001-1210ND
2015-09-085701-800-081311.6 ppb
2015-09-085701-801-081310.4 ppb
2015-09-085701-802-081312.1 ppb
2015-09-085701-803-08138.89 ppb
2015-09-085701-804-081311.5 ppb
2015-09-085701-805-081312.7 ppb
2015-09-085701-806-081312.9 ppb
2015-09-085701-807-08132.33 ppb
2015-12-085701-800-081010.2 ppb
2015-12-085701-801-08109.27 ppb
2015-12-085701-802-08109.61 ppb
2015-12-085810-803-14548.40 ppb
2015-12-085701-804-08108.28 ppb
2015-12-085810-805-15349.90 ppb
2015-12-085810-806-11259.10 ppb
2015-12-085810-807-15043.20 ppb
2016-03-085701-800-09207.01 ppb
2016-03-085701-801-09206.29 ppb
2016-03-085701-802-09207.62 ppb
2016-03-085701-803-09204.33 ppb
2016-03-085701-804-09205.27 ppb
2016-03-085701-805-09205.79 ppb
2016-03-085701-806-09205.28 ppb
2016-03-085701-807-09205.03 ppb
2016-06-075701-800-091910.1 ppb
2016-06-075701-801-091910.9 ppb
2016-06-075701-802-091910.00 ppb
2016-06-075701-803-09197.21 ppb
2016-06-075701-804-091910.7 ppb
2016-06-075701-805-09199.90 ppb
2016-06-075701-806-091911.2 ppb
2016-06-075701-807-09198.00 ppb
2016-06-215701-005-1300ND
2016-08-179590-001-1010ND
2016-09-065701-800-063511.8 ppb
2016-09-065701-801-063511.6 ppb
2016-09-065701-802-063512.6 ppb
2016-09-065701-803-06358.64 ppb
2016-09-065701-804-063512.0 ppb
2016-09-065701-805-063513.3 ppb
2016-09-065701-806-063512.3 ppb
2016-09-065701-807-063511.7 ppb
2016-12-065701-800-08389.64 ppb
2016-12-065701-801-08388.76 ppb
2016-12-065701-802-08388.39 ppb
2016-12-065701-803-08384.12 ppb
2016-12-065701-804-08388.72 ppb
2016-12-065701-805-08389.02 ppb
2016-12-065701-806-08389.73 ppb
2016-12-065701-807-08384.67 ppb
2017-03-075810-800-134613.0 ppb
2017-03-075810-802-102515.0 ppb
2017-03-075810-803-15295.60 ppb
2017-03-075810-804-100416.0 ppb
2017-03-075810-805-155212.0 ppb
2017-03-075810-806-114714.0 ppb
2017-03-075810-807-16006.30 ppb
2017-03-085810-801-000015.0 ppb
2017-06-065701-800-09116.61 ppb
2017-06-065701-801-09116.91 ppb
2017-06-065701-802-09116.36 ppb
2017-06-065701-803-09112.57 ppb
2017-06-065701-804-09116.89 ppb
2017-06-065701-805-09115.37 ppb
2017-06-065701-806-09118.71 ppb
2017-06-065701-807-09112.80 ppb
2017-06-215701-005-1330ND
2017-09-055701-800-08589.07 ppb
2017-09-055701-801-08589.45 ppb
2017-09-055701-802-08587.29 ppb
2017-09-055701-803-08585.35 ppb
2017-09-055701-804-085812.3 ppb
2017-09-055701-805-08589.10 ppb
2017-09-055701-806-085811.6 ppb
2017-09-055701-807-08585.28 ppb
2017-12-065810-800-10208.60 ppb
2017-12-065810-801-09508.40 ppb
2017-12-065810-802-09407.70 ppb
2017-12-065810-803-112012.0 ppb
2017-12-065810-804-09207.00 ppb
2017-12-065810-805-115513.0 ppb
2017-12-065810-806-10056.00 ppb
2017-12-065810-807-113530.0 ppb