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EWG's Tap Water Database — 2019 UPDATE

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Bromodichloromethane

City of Redmond Water System

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.

 

193

Samples

0

Samples exceeding legal limit (MCL)

188

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20122.32 ppb3029ND - 6.20 ppb
20132.14 ppb32320.900 ppb - 5.50 ppb
20142.40 ppb31311.000 ppb - 6.10 ppb
20153.21 ppb32321.30 ppb - 7.32 ppb
20163.00 ppb3532ND - 7.35 ppb
20172.32 ppb3332ND - 5.68 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
2012-02-06021854.60 ppb
2012-02-06021871.40 ppb
2012-02-06021863.40 ppb
2012-02-06021845.10 ppb
2012-02-06021831.20 ppb
2012-04-02058153.90 ppb
2012-04-02058091.30 ppb
2012-04-02058121.20 ppb
2012-04-02058101.40 ppb
2012-04-02058131.10 ppb
2012-04-02058141.000 ppb
2012-04-02058161.30 ppb
2012-04-02058114.80 ppb
2012-07-02120401.10 ppb
2012-07-02120421.60 ppb
2012-07-02120376.20 ppb
2012-07-02120414.40 ppb
2012-07-02120361.40 ppb
2012-07-02120381.50 ppb
2012-07-02120351.50 ppb
2012-07-02120391.50 ppb
2012-07-1627093ND
2012-10-01184951.70 ppb
2012-10-01184945.00 ppb
2012-10-01184881.60 ppb
2012-10-01184931.70 ppb
2012-10-01184912.00 ppb
2012-10-01184921.80 ppb
2012-10-01184891.90 ppb
2012-10-01184903.00 ppb
2013-01-08004131.30 ppb
2013-01-08004113.60 ppb
2013-01-08004161.50 ppb
2013-01-08004101.60 ppb
2013-01-08004091.70 ppb
2013-01-08004141.10 ppb
2013-01-08004153.90 ppb
2013-01-08004121.40 ppb
2013-04-01067820.900 ppb
2013-04-01067751.10 ppb
2013-04-01067761.000 ppb
2013-04-01067774.10 ppb
2013-04-01067813.50 ppb
2013-04-01067791.000 ppb
2013-04-01067801.20 ppb
2013-04-01067781.10 ppb
2013-07-01133511.70 ppb
2013-07-01133471.90 ppb
2013-07-01133441.30 ppb
2013-07-02133465.00 ppb
2013-07-02133451.40 ppb
2013-07-02133503.10 ppb
2013-07-02133491.10 ppb
2013-09-03180242.00 ppb
2013-10-07204072.20 ppb
2013-10-07204102.00 ppb
2013-10-07204135.50 ppb
2013-10-07204082.00 ppb
2013-10-07204112.00 ppb
2013-10-07204093.20 ppb
2013-10-07204142.40 ppb
2013-10-07204121.60 ppb
2014-01-08003661.60 ppb
2014-01-08003681.60 ppb
2014-01-08003673.00 ppb
2014-01-08003703.90 ppb
2014-01-08003651.60 ppb
2014-01-08003641.30 ppb
2014-01-08003631.90 ppb
2014-04-09062134.20 ppb
2014-04-09062111.70 ppb
2014-04-09062141.60 ppb
2014-04-09062173.40 ppb
2014-04-09062151.40 ppb
2014-04-09062122.20 ppb
2014-04-09062181.70 ppb
2014-04-09062161.20 ppb
2014-07-09122361.000 ppb
2014-07-09122374.20 ppb
2014-07-09122321.30 ppb
2014-07-09122351.30 ppb
2014-07-09122381.30 ppb
2014-07-09122334.70 ppb
2014-07-09122341.50 ppb
2014-07-09122311.40 ppb
2014-10-08188682.70 ppb
2014-10-08188695.50 ppb
2014-10-08188721.60 ppb
2014-10-08188736.10 ppb
2014-10-08188672.60 ppb
2014-10-08188712.10 ppb
2014-10-08188742.50 ppb
2014-10-08188702.20 ppb
2015-01-07152081.81 ppb
2015-01-07152073.19 ppb
2015-01-07152032.67 ppb
2015-01-07152021.77 ppb
2015-01-07152061.34 ppb
2015-01-07152011.87 ppb
2015-01-07152042.03 ppb
2015-01-07152051.86 ppb
2015-04-08887073.94 ppb
2015-04-08887081.82 ppb
2015-04-08887061.30 ppb
2015-04-08887051.47 ppb
2015-04-08887041.78 ppb
2015-04-08887034.21 ppb
2015-04-08887011.78 ppb
2015-04-08887021.69 ppb
2015-07-08376073.63 ppb
2015-07-08376082.59 ppb
2015-07-08376061.89 ppb
2015-07-08376052.28 ppb
2015-07-08376042.14 ppb
2015-07-08376037.32 ppb
2015-07-08376012.40 ppb
2015-07-08376022.10 ppb
2015-10-07189076.18 ppb
2015-10-07189085.20 ppb
2015-10-07189064.89 ppb
2015-10-07189054.97 ppb
2015-10-07189045.38 ppb
2015-10-07189035.89 ppb
2015-10-07189015.48 ppb
2015-10-07189025.90 ppb
2016-01-062.71 ppb
2016-01-062.91 ppb
2016-01-062.97 ppb
2016-01-063.47 ppb
2016-01-063.34 ppb
2016-01-062.59 ppb
2016-01-061.73 ppb
2016-01-064.39 ppb
2016-04-081.44 ppb
2016-04-082.26 ppb
2016-04-082.34 ppb
2016-04-081.97 ppb
2016-04-085.03 ppb
2016-04-082.23 ppb
2016-04-086.30 ppb
2016-04-082.18 ppb
2016-07-062.36 ppb
2016-07-067.35 ppb
2016-07-062.18 ppb
2016-07-066.58 ppb
2016-07-062.29 ppb
2016-07-062.21 ppb
2016-07-062.13 ppb
2016-07-062.84 ppb
2016-07-11ND
2016-07-11ND
2016-07-11ND
2016-10-043.68 ppb
2016-10-041.99 ppb
2016-10-047.02 ppb
2016-10-046.45 ppb
2016-10-042.95 ppb
2016-10-042.42 ppb
2016-10-042.65 ppb
2016-10-041.91 ppb
2017-01-115.23 ppb
2017-01-111.57 ppb
2017-01-111.04 ppb
2017-01-111.25 ppb
2017-01-112.51 ppb
2017-01-111.70 ppb
2017-01-111.42 ppb
2017-01-111.70 ppb
2017-04-111.38 ppb
2017-04-114.71 ppb
2017-04-111.33 ppb
2017-04-111.48 ppb
2017-04-115.68 ppb
2017-04-111.59 ppb
2017-04-111.51 ppb
2017-04-111.15 ppb
2017-07-051.62 ppb
2017-07-051.06 ppb
2017-07-051.77 ppb
2017-07-051.61 ppb
2017-07-055.55 ppb
2017-07-051.67 ppb
2017-07-051.68 ppb
2017-07-052.77 ppb
2017-10-115.43 ppb
2017-10-112.49 ppb
2017-10-115.07 ppb
2017-10-112.11 ppb
2017-10-111.92 ppb
2017-10-112.41 ppb
2017-10-111.87 ppb
2017-10-112.22 ppb
2017-11-29ND