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EWG's Tap Water Database — 2021 UPDATE

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Bromodichloromethane

Clwsc Canyon Lake Shores

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

 

180

Samples

0

Samples exceeding legal limit (MCL)

149

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
201410.3 ppb2826ND - 26.1 ppb
201513.7 ppb3326ND - 34.0 ppb
20167.69 ppb3226ND - 21.0 ppb
201711.4 ppb2824ND - 39.0 ppb
20188.15 ppb3224ND - 27.5 ppb
20198.39 ppb2723ND - 20.3 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
2014-02-18AC433514.30 ppb
2014-02-18AC4333011.3 ppb
2014-02-18AC4331713.8 ppb
2014-02-18AC433377.60 ppb
2014-02-18AC4331210.5 ppb
2014-02-18AC4335910.00 ppb
2014-04-30AC523700.900 ppb
2014-04-30AC5248412.7 ppb
2014-04-30AC5249813.3 ppb
2014-04-30AC524852.20 ppb
2014-04-30AC524839.60 ppb
2014-04-30AC5237212.0 ppb
2014-04-30AC52368ND
2014-09-03AC656496.30 ppb
2014-09-03AC6572118.5 ppb
2014-09-03AC6572016.6 ppb
2014-09-03AC657233.50 ppb
2014-09-03AC6572626.1 ppb
2014-09-03AC65659ND
2014-10-08AC691959.60 ppb
2014-10-08AC691990.700 ppb
2014-10-08AC6917524.9 ppb
2014-10-08AC691747.60 ppb
2014-10-08AC691776.40 ppb
2014-10-08AC6917321.8 ppb
2014-10-08AC692051.000 ppb
2014-10-08AC6920313.0 ppb
2014-10-08AC6919723.0 ppb
2015-02-03AC790263.20 ppb
2015-02-03AC79030ND
2015-02-03AC790284.80 ppb
2015-02-03AC7900515.7 ppb
2015-02-03AC7901213.2 ppb
2015-02-03AC7900613.0 ppb
2015-02-03AC7900415.4 ppb
2015-03-26AC86265ND
2015-03-26AC86267ND
2015-03-26AC8627511.0 ppb
2015-03-26AC8626119.0 ppb
2015-03-26AC863071.20 ppb
2015-03-26AC862479.60 ppb
2015-03-26AC8627920.0 ppb
2015-05-13AC91861ND
2015-05-13AC9181818.2 ppb
2015-05-13AC9181410.8 ppb
2015-05-13AC918069.30 ppb
2015-05-13AC9180914.8 ppb
2015-05-13AC9185115.0 ppb
2015-08-12AD03868ND
2015-08-12AD03860ND
2015-08-12AD03864ND
2015-08-12AD0385816.0 ppb
2015-08-12AD0380727.5 ppb
2015-08-12AD0380621.3 ppb
2015-08-12AD0381117.7 ppb
2015-08-12AD0381330.3 ppb
2015-11-03AD1238231.3 ppb
2015-11-03AD1238528.3 ppb
2015-11-03AD1238621.0 ppb
2015-11-03AD1238330.1 ppb
2015-12-07AD1579834.0 ppb
2016-02-03AD21858ND
2016-02-03AD218521.50 ppb
2016-02-03AD218542.20 ppb
2016-02-03AD2176814.9 ppb
2016-02-03AD217996.00 ppb
2016-02-03AD218022.70 ppb
2016-02-03AD2176910.4 ppb
2016-03-09AD27909ND
2016-03-09AD27915ND
2016-03-09AD27907ND
2016-03-09AD278999.30 ppb
2016-03-09AD279132.10 ppb
2016-04-27AD3444610.00 ppb
2016-04-27AD3444818.0 ppb
2016-04-27AD343769.90 ppb
2016-04-27AD3437313.6 ppb
2016-04-27AD343709.40 ppb
2016-04-27AD3437717.1 ppb
2016-07-26AD4571921.0 ppb
2016-07-26AD457314.50 ppb
2016-07-26AD4567914.9 ppb
2016-07-26AD4567810.8 ppb
2016-07-26AD456752.90 ppb
2016-07-26AD4567118.4 ppb
2016-07-26AD45729ND
2016-07-26AD457235.70 ppb
2016-10-04AD524282.50 ppb
2016-10-04AD5242713.3 ppb
2016-10-04AD524317.40 ppb
2016-10-04AD5243213.7 ppb
2016-10-04AD524874.00 ppb
2016-12-01AD59880ND
2017-01-25AD66818ND
2017-01-25AD668384.60 ppb
2017-01-25AD667882.70 ppb
2017-01-25AD6678614.3 ppb
2017-01-25AD667897.10 ppb
2017-01-25AD6678717.5 ppb
2017-02-24AD72107ND
2017-04-11AD7921813.0 ppb
2017-04-11AD792105.20 ppb
2017-04-11AD792284.10 ppb
2017-04-11AD7917912.8 ppb
2017-04-11AD7917718.2 ppb
2017-04-11AD791785.50 ppb
2017-04-11AD7917616.4 ppb
2017-06-27AD87926ND
2017-06-27AD87930ND
2017-06-27AD8792439.0 ppb
2017-07-24AD9037617.0 ppb
2017-07-24AD903745.70 ppb
2017-07-24AD9030016.5 ppb
2017-07-24AD9033118.3 ppb
2017-07-24AD903354.50 ppb
2017-07-24AD9033024.2 ppb
2017-10-05AD9958911.0 ppb
2017-10-05AD995412.10 ppb
2017-10-05AD9953617.7 ppb
2017-10-05AD9953512.0 ppb
2017-10-05AD9953430.4 ppb
2018-02-07AE12787ND
2018-02-07AE127838.80 ppb
2018-02-07AE127811.30 ppb
2018-02-07AE1271512.6 ppb
2018-02-07AE1271310.4 ppb
2018-02-07AE127192.40 ppb
2018-02-07AE1271711.5 ppb
2018-05-16AE266102.10 ppb
2018-05-16AE26608ND
2018-05-16AE2652414.6 ppb
2018-05-16AE2655411.2 ppb
2018-05-16AE265538.60 ppb
2018-05-16AE2653014.6 ppb
2018-05-16AE266121.30 ppb
2018-05-17AE26809ND
2018-05-17AE26813ND
2018-05-17AE26795ND
2018-05-17AE26811ND
2018-05-17AE268071.10 ppb
2018-05-17AE26793ND
2018-07-26AE3470025.0 ppb
2018-07-26AE346824.90 ppb
2018-07-26AE3464514.5 ppb
2018-07-26AE346446.90 ppb
2018-07-26AE346518.40 ppb
2018-07-26AE346509.10 ppb
2018-07-26AE346808.20 ppb
2018-11-06AE4536927.2 ppb
2018-11-06AE4537027.5 ppb
2018-11-06AE453645.50 ppb
2018-11-06AE4536523.1 ppb
2018-11-06AE45425ND
2019-02-06AE5321214.0 ppb
2019-02-06AE532144.30 ppb
2019-02-06AE532161.70 ppb
2019-02-06AE531663.50 ppb
2019-02-06AE5316814.1 ppb
2019-02-06AE531674.10 ppb
2019-02-06AE5316918.7 ppb
2019-04-23AE63386ND
2019-04-23AE63384ND
2019-04-23AE633552.50 ppb
2019-04-23AE6336020.3 ppb
2019-04-23AE633539.10 ppb
2019-04-23AE6335915.9 ppb
2019-08-20AE79904ND
2019-08-20AE799086.10 ppb
2019-08-20AE7980117.2 ppb
2019-08-20AE798006.60 ppb
2019-08-20AE797991.80 ppb
2019-08-20AE7979814.3 ppb
2019-10-29AE8783817.0 ppb
2019-10-29AE8783917.5 ppb
2019-10-29AE878473.90 ppb
2019-10-29AE8784912.1 ppb
2019-10-30AE88006ND
2019-10-30AE880081.50 ppb
2019-10-30AE880022.20 ppb
2019-10-30AE8800418.0 ppb