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EWG's Tap Water Database — 2019 UPDATE

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Bromodichloromethane

City of Houston

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.

 

571

Samples

0

Samples exceeding legal limit (MCL)

464

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20126.80 ppb9081ND - 12.7 ppb
20137.99 ppb7674ND - 16.2 ppb
20148.59 ppb8977ND - 16.0 ppb
20156.35 ppb10273ND - 16.6 ppb
20164.75 ppb10780ND - 11.2 ppb
20176.55 ppb10779ND - 15.3 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
2012-01-31AB797314.40 ppb
2012-01-31AB797338.60 ppb
2012-01-31AB797306.40 ppb
2012-01-31AB797277.90 ppb
2012-01-31AB797328.70 ppb
2012-01-31AB797358.50 ppb
2012-01-31AB797255.80 ppb
2012-01-31AB797288.90 ppb
2012-01-31AB797292.20 ppb
2012-01-31AB797268.60 ppb
2012-01-31AB797247.40 ppb
2012-01-31AB797342.60 ppb
2012-02-01AB797451.40 ppb
2012-02-01AB797393.10 ppb
2012-02-01AB797412.70 ppb
2012-02-01AB797363.60 ppb
2012-02-01AB797383.70 ppb
2012-02-01AB797405.60 ppb
2012-02-01AB79753ND
2012-02-01AB797443.80 ppb
2012-02-01AB797525.10 ppb
2012-02-01AB797477.30 ppb
2012-02-01AB797468.10 ppb
2012-04-10AB86410ND
2012-04-10AB864061.80 ppb
2012-05-23AB90921ND
2012-05-23AB90927ND
2012-05-23AB90925ND
2012-05-23AB90923ND
2012-06-11AB921337.30 ppb
2012-06-11AB921548.50 ppb
2012-06-11AB921468.80 ppb
2012-06-11AB9213110.6 ppb
2012-06-11AB921578.20 ppb
2012-06-11AB921538.30 ppb
2012-06-11AB921588.20 ppb
2012-06-11AB9213210.8 ppb
2012-06-11AB9213011.6 ppb
2012-06-12AB923199.30 ppb
2012-06-12AB9231410.5 ppb
2012-06-12AB9232010.8 ppb
2012-06-12AB923109.80 ppb
2012-06-12AB923151.30 ppb
2012-06-12AB923189.90 ppb
2012-06-12AB9231110.00 ppb
2012-07-24AB96062ND
2012-07-24AB960645.00 ppb
2012-08-10AB9799511.0 ppb
2012-08-10AB979856.00 ppb
2012-08-10AB9798711.0 ppb
2012-08-10AB979899.70 ppb
2012-08-10AB979972.10 ppb
2012-08-27AB99665ND
2012-09-19AC013209.40 ppb
2012-09-19AC013188.10 ppb
2012-09-19AC012486.60 ppb
2012-09-19AC012587.30 ppb
2012-09-19AC012539.70 ppb
2012-09-19AC012527.10 ppb
2012-09-19AC012516.30 ppb
2012-09-19AC012499.10 ppb
2012-09-19AC012456.60 ppb
2012-09-19AC0125511.1 ppb
2012-09-19AC012466.20 ppb
2012-09-19AC012509.60 ppb
2012-09-19AC012548.60 ppb
2012-09-19AC012596.70 ppb
2012-09-20AC015574.90 ppb
2012-09-20AC015694.90 ppb
2012-09-20AC015257.50 ppb
2012-09-20AC015217.40 ppb
2012-09-20AC015224.40 ppb
2012-09-20AC0152410.3 ppb
2012-11-07AC048648.40 ppb
2012-11-07AC048686.50 ppb
2012-11-07AC048656.50 ppb
2012-11-07AC048549.20 ppb
2012-11-07AC048626.20 ppb
2012-11-07AC048677.90 ppb
2012-11-07AC048587.40 ppb
2012-11-07AC048667.80 ppb
2012-11-07AC048698.10 ppb
2012-11-07AC0486010.5 ppb
2012-11-08AC0486111.2 ppb
2012-11-08AC0485312.7 ppb
2012-11-08AC0485512.6 ppb
2012-11-08AC0485711.0 ppb
2012-11-08AC0485610.5 ppb
2012-11-08AC048639.20 ppb
2012-11-19AC05439ND
2013-02-25AC115466.10 ppb
2013-02-25AC115416.60 ppb
2013-02-25AC115327.30 ppb
2013-02-25AC115426.20 ppb
2013-02-25AC115366.60 ppb
2013-02-25AC115336.30 ppb
2013-02-25AC115376.80 ppb
2013-02-26AC11755ND
2013-02-26AC117125.80 ppb
2013-02-26AC117135.20 ppb
2013-02-26AC117144.30 ppb
2013-02-26AC117154.90 ppb
2013-02-26AC117196.00 ppb
2013-02-26AC117103.90 ppb
2013-02-26AC117215.90 ppb
2013-02-26AC117186.10 ppb
2013-02-26AC117117.10 ppb
2013-06-12AC220159.00 ppb
2013-06-12AC220129.20 ppb
2013-06-12AC220148.50 ppb
2013-06-12AC220135.10 ppb
2013-06-12AC2202410.4 ppb
2013-06-12AC2202512.9 ppb
2013-06-12AC220119.50 ppb
2013-06-12AC2203411.7 ppb
2013-06-13AC2203312.0 ppb
2013-06-13AC220228.50 ppb
2013-06-13AC220269.30 ppb
2013-06-13AC220107.60 ppb
2013-06-13AC220215.10 ppb
2013-06-13AC220179.10 ppb
2013-06-13AC220528.20 ppb
2013-06-13AC2202811.8 ppb
2013-08-08AC272497.70 ppb
2013-08-08AC272657.80 ppb
2013-08-08AC272436.70 ppb
2013-08-08AC272599.00 ppb
2013-08-08AC272537.70 ppb
2013-08-08AC272636.90 ppb
2013-08-08AC272578.30 ppb
2013-08-08AC272611.20 ppb
2013-08-08AC272551.60 ppb
2013-09-24AC311208.50 ppb
2013-09-24AC311257.00 ppb
2013-09-24AC311219.20 ppb
2013-09-24AC311237.90 ppb
2013-09-24AC311278.70 ppb
2013-09-24AC311228.90 ppb
2013-09-24AC311249.00 ppb
2013-09-24AC311281.60 ppb
2013-09-24AC311307.90 ppb
2013-09-24AC311299.50 ppb
2013-09-24AC311268.70 ppb
2013-09-24AC3111910.00 ppb
2013-09-24AC311329.30 ppb
2013-09-25AC313647.40 ppb
2013-09-25AC312997.80 ppb
2013-09-25AC312898.10 ppb
2013-09-25AC313019.70 ppb
2013-10-29AC33630ND
2013-12-16AC376039.30 ppb
2013-12-16AC3760811.9 ppb
2013-12-16AC3760716.2 ppb
2013-12-16AC3760910.3 ppb
2013-12-16AC3760610.3 ppb
2013-12-16AC376109.10 ppb
2013-12-17AC3777111.0 ppb
2013-12-17AC3777710.8 ppb
2013-12-17AC3777812.3 ppb
2013-12-17AC3777411.6 ppb
2013-12-17AC3777611.4 ppb
2013-12-17AC377751.80 ppb
2013-12-17AC3777010.3 ppb
2013-12-17AC3776912.0 ppb
2013-12-17AC3778111.6 ppb
2013-12-17AC377798.20 ppb
2014-03-05AC4566713.0 ppb
2014-03-05AC456667.60 ppb
2014-03-05AC456499.40 ppb
2014-03-05AC4566310.7 ppb
2014-03-05AC4565010.4 ppb
2014-03-05AC456529.00 ppb
2014-03-05AC4568711.8 ppb
2014-03-05AC456883.60 ppb
2014-03-05AC456628.30 ppb
2014-03-05AC4566513.1 ppb
2014-03-05AC456519.60 ppb
2014-03-05AC4566910.9 ppb
2014-03-05AC4564813.4 ppb
2014-03-06AC4596511.1 ppb
2014-03-06AC4594310.8 ppb
2014-03-06AC4596812.8 ppb
2014-04-16AC50842ND
2014-04-16AC50844ND
2014-04-17AC51090ND
2014-04-17AC51078ND
2014-04-17AC51084ND
2014-04-17AC51082ND
2014-05-19AC5455810.1 ppb
2014-05-19AC5455910.7 ppb
2014-05-19AC5457410.2 ppb
2014-05-19AC545608.50 ppb
2014-05-19AC545669.10 ppb
2014-05-19AC545528.10 ppb
2014-05-19AC5455610.6 ppb
2014-05-19AC5456310.00 ppb
2014-05-19AC545537.90 ppb
2014-05-19AC545687.70 ppb
2014-05-20AC547169.70 ppb
2014-05-20AC5474810.00 ppb
2014-05-20AC5470810.3 ppb
2014-05-20AC547199.50 ppb
2014-05-20AC547158.10 ppb
2014-05-20AC547132.90 ppb
2014-06-03AC558011.000 ppb
2014-07-15AC5969812.0 ppb
2014-07-15AC5969016.0 ppb
2014-07-15AC5969215.0 ppb
2014-07-15AC5969414.0 ppb
2014-07-15AC596884.70 ppb
2014-07-15AC5975314.4 ppb
2014-07-15AC5975710.7 ppb
2014-07-15AC5975410.6 ppb
2014-07-15AC5975514.0 ppb
2014-07-15AC5975210.9 ppb
2014-07-15AC5974910.3 ppb
2014-07-15AC5977011.2 ppb
2014-07-15AC5976913.5 ppb
2014-07-15AC5975011.5 ppb
2014-07-15AC5975115.5 ppb
2014-07-15AC5975614.5 ppb
2014-07-16AC59835ND
2014-07-16AC5983114.0 ppb
2014-07-16AC5983912.0 ppb
2014-07-16AC598499.80 ppb
2014-07-16AC5983714.0 ppb
2014-07-16AC598451.10 ppb
2014-07-16AC5987912.7 ppb
2014-07-16AC5987811.6 ppb
2014-07-16AC5989213.8 ppb
2014-07-16AC598931.40 ppb
2014-07-16AC5989713.2 ppb
2014-10-08AC692091.10 ppb
2014-10-09AC69350ND
2014-10-09AC69348ND
2014-12-09AC741965.50 ppb
2014-12-09AC74204ND
2014-12-18AC7544011.1 ppb
2014-12-18AC754539.60 ppb
2014-12-18AC754488.10 ppb
2014-12-18AC754466.50 ppb
2014-12-18AC754516.80 ppb
2014-12-18AC754478.20 ppb
2014-12-18AC75459ND
2014-12-18AC75455ND
2014-12-19AC7563111.2 ppb
2014-12-19AC756287.00 ppb
2014-12-19AC7564911.5 ppb
2014-12-19AC756377.20 ppb
2014-12-19AC7564511.3 ppb
2014-12-19AC756299.40 ppb
2014-12-19AC756257.40 ppb
2014-12-19AC756269.30 ppb
2014-12-19AC7563810.6 ppb
2014-12-19AC7563310.1 ppb
2015-03-04AC829521.70 ppb
2015-03-04AC8267616.6 ppb
2015-03-04AC8267911.3 ppb
2015-03-04AC8273312.9 ppb
2015-03-04AC826699.70 ppb
2015-03-04AC8267511.7 ppb
2015-03-04AC826717.70 ppb
2015-03-04AC827288.30 ppb
2015-03-04AC826677.50 ppb
2015-03-04AC826728.70 ppb
2015-03-04AC826687.70 ppb
2015-03-04AC8266410.6 ppb
2015-03-04AC8267316.3 ppb
2015-03-05AC82914ND
2015-03-05AC827125.50 ppb
2015-03-05AC827084.80 ppb
2015-03-05AC827076.50 ppb
2015-03-05AC826888.80 ppb
2015-03-24AC85888ND
2015-06-04AC94641ND
2015-06-04AC94645ND
2015-06-04AC94639ND
2015-06-04AC94643ND
2015-06-04AC94647ND
2015-06-16AC961518.90 ppb
2015-06-16AC961546.50 ppb
2015-06-16AC961456.90 ppb
2015-06-16AC961395.60 ppb
2015-06-16AC961425.50 ppb
2015-06-16AC961377.60 ppb
2015-06-16AC961557.00 ppb
2015-06-16AC961509.20 ppb
2015-06-16AC961387.20 ppb
2015-06-17AC962438.30 ppb
2015-06-17AC9626010.00 ppb
2015-06-17AC9626210.3 ppb
2015-06-17AC962747.40 ppb
2015-06-17AC962737.30 ppb
2015-06-17AC9626512.2 ppb
2015-07-21AD00437ND
2015-07-21AD00441ND
2015-07-21AD0042915.0 ppb
2015-07-21AD0043510.00 ppb
2015-07-21AD0044315.0 ppb
2015-07-21AD0043310.00 ppb
2015-07-21AD0040511.0 ppb
2015-07-21AD004073.80 ppb
2015-07-22AD00630ND
2015-07-22AD00628ND
2015-07-22AD00632ND
2015-07-22AD00626ND
2015-07-22AD00624ND
2015-07-22AD0063812.0 ppb
2015-09-16AD072946.50 ppb
2015-09-16AD072978.60 ppb
2015-09-16AD072939.60 ppb
2015-09-16AD073128.80 ppb
2015-09-16AD073138.70 ppb
2015-09-16AD073049.30 ppb
2015-09-16AD0730211.0 ppb
2015-09-16AD073116.60 ppb
2015-09-16AD072929.50 ppb
2015-09-16AD0732910.5 ppb
2015-09-16AD073278.50 ppb
2015-09-17AD075975.10 ppb
2015-09-17AD075376.10 ppb
2015-09-17AD075385.50 ppb
2015-09-17AD075636.70 ppb
2015-09-17AD07536ND
2015-09-17AD075467.30 ppb
2015-09-17AD075993.00 ppb
2015-10-22AD11558ND
2015-10-22AD11536ND
2015-10-22AD11542ND
2015-10-22AD11532ND
2015-10-22AD11548ND
2015-10-22AD11550ND
2015-11-12AD133766.60 ppb
2015-11-12AD13378ND
2015-11-12AD13382ND
2015-11-12AD13386ND
2015-11-12AD13372ND
2015-11-12AD13380ND
2015-11-12AD13390ND
2015-11-16AD1356213.5 ppb
2015-11-16AD1361814.9 ppb
2015-11-16AD135618.50 ppb
2015-11-16AD1355910.6 ppb
2015-11-16AD1361915.8 ppb
2015-11-16AD1355815.7 ppb
2015-11-16AD135655.50 ppb
2015-11-16AD1355615.0 ppb
2015-11-16AD1355711.6 ppb
2015-11-16AD135608.60 ppb
2015-11-17AD137687.40 ppb
2015-11-17AD137737.60 ppb
2015-11-17AD137677.30 ppb
2015-11-17AD137727.00 ppb
2015-11-17AD137711.20 ppb
2015-11-17AD137667.00 ppb
2015-12-08AD15973ND
2015-12-08AD15967ND
2016-02-18AD243611.000 ppb
2016-02-18AD24331ND
2016-02-18AD24299ND
2016-02-18AD24379ND
2016-03-03AD269274.70 ppb
2016-03-16AD290185.00 ppb
2016-03-16AD290335.00 ppb
2016-03-16AD290305.60 ppb
2016-03-16AD290376.40 ppb
2016-03-16AD290195.20 ppb
2016-03-16AD290275.00 ppb
2016-03-16AD290297.00 ppb
2016-03-16AD290365.40 ppb
2016-03-16AD290325.40 ppb
2016-03-16AD290266.00 ppb
2016-03-17AD293196.80 ppb
2016-03-17AD293236.20 ppb
2016-03-17AD293225.60 ppb
2016-03-17AD293187.30 ppb
2016-03-17AD29320ND
2016-03-17AD293217.70 ppb
2016-03-17AD29381ND
2016-03-17AD293795.90 ppb
2016-03-23AD30127ND
2016-03-23AD30131ND
2016-03-23AD30129ND
2016-03-23AD30155ND
2016-06-03AD394566.80 ppb
2016-06-08AD39810ND
2016-06-08AD39818ND
2016-06-08AD39806ND
2016-06-08AD39802ND
2016-06-08AD39794ND
2016-06-08AD398087.30 ppb
2016-06-15AD407188.70 ppb
2016-06-15AD407146.30 ppb
2016-06-15AD407227.30 ppb
2016-06-15AD407256.20 ppb
2016-06-15AD407267.20 ppb
2016-06-15AD407166.10 ppb
2016-06-15AD407197.70 ppb
2016-06-15AD407106.60 ppb
2016-06-15AD407309.30 ppb
2016-06-15AD407276.70 ppb
2016-06-15AD407208.00 ppb
2016-06-15AD407178.10 ppb
2016-06-16AD41019ND
2016-06-16AD41015ND
2016-06-16AD409726.70 ppb
2016-06-16AD409715.90 ppb
2016-06-16AD40964ND
2016-06-16AD409687.90 ppb
2016-06-16AD410131.60 ppb
2016-09-20AD503959.10 ppb
2016-09-20AD503919.20 ppb
2016-09-20AD503733.90 ppb
2016-09-20AD503758.20 ppb
2016-09-20AD503811.50 ppb
2016-09-20AD503248.80 ppb
2016-09-20AD503278.10 ppb
2016-09-20AD503306.60 ppb
2016-09-20AD503298.20 ppb
2016-09-20AD503257.40 ppb
2016-09-20AD503288.80 ppb
2016-09-20AD503266.00 ppb
2016-09-21AD508319.20 ppb
2016-09-21AD508297.80 ppb
2016-09-21AD508091.50 ppb
2016-09-21AD507078.20 ppb
2016-09-21AD5068611.2 ppb
2016-09-21AD506977.80 ppb
2016-09-21AD507088.20 ppb
2016-09-21AD507127.30 ppb
2016-09-21AD507102.40 ppb
2016-09-21AD506967.20 ppb
2016-09-21AD507069.20 ppb
2016-09-21AD506959.00 ppb
2016-09-21AD508259.10 ppb
2016-09-22AD50815ND
2016-10-06AD52680ND
2016-10-06AD52682ND
2016-10-06AD52678ND
2016-10-06AD52676ND
2016-10-06AD52674ND
2016-11-17AD585435.30 ppb
2016-11-17AD585384.70 ppb
2016-11-17AD585398.90 ppb
2016-11-17AD585365.20 ppb
2016-11-17AD585446.40 ppb
2016-11-17AD585456.10 ppb
2016-11-18AD58909ND
2016-11-18AD588256.00 ppb
2016-11-18AD588176.30 ppb
2016-11-18AD588205.90 ppb
2016-11-18AD588163.10 ppb
2016-11-18AD588184.60 ppb
2016-11-18AD588154.50 ppb
2016-11-18AD588195.20 ppb
2016-11-18AD588145.60 ppb
2016-11-18AD588776.30 ppb
2016-11-21AD58875ND
2016-11-21AD58903ND
2016-11-21AD588971.30 ppb
2016-11-21AD58879ND
2016-11-21AD588711.40 ppb
2016-11-21AD587746.10 ppb
2016-11-21AD587755.50 ppb
2017-01-26AD67193ND
2017-01-26AD67205ND
2017-01-26AD67203ND
2017-02-28AD7242211.3 ppb
2017-02-28AD7241912.9 ppb
2017-02-28AD724248.50 ppb
2017-02-28AD7239910.6 ppb
2017-02-28AD7242112.6 ppb
2017-02-28AD7242015.3 ppb
2017-02-28AD723988.00 ppb
2017-02-28AD7241812.6 ppb
2017-02-28AD7242313.9 ppb
2017-02-28AD7239710.1 ppb
2017-03-01AD7276710.00 ppb
2017-03-01AD727398.10 ppb
2017-03-01AD727427.60 ppb
2017-03-01AD727457.20 ppb
2017-03-01AD727378.20 ppb
2017-03-01AD72740ND
2017-03-01AD727389.90 ppb
2017-03-02AD730967.00 ppb
2017-03-02AD73124ND
2017-03-28AD771429.50 ppb
2017-03-28AD77184ND
2017-03-28AD77180ND
2017-03-28AD77186ND
2017-03-28AD7717811.0 ppb
2017-03-29AD77428ND
2017-03-29AD77430ND
2017-03-29AD77444ND
2017-03-29AD774242.00 ppb
2017-04-26AD81177ND
2017-04-26AD8114210.4 ppb
2017-04-26AD811449.20 ppb
2017-04-26AD811399.10 ppb
2017-04-26AD811407.20 ppb
2017-04-26AD8113610.5 ppb
2017-04-26AD811359.70 ppb
2017-04-26AD8114310.2 ppb
2017-04-26AD811419.60 ppb
2017-04-26AD811458.20 ppb
2017-04-26AD811469.70 ppb
2017-04-26AD8113712.2 ppb
2017-04-26AD8113811.0 ppb
2017-04-27AD8152411.0 ppb
2017-04-27AD81528ND
2017-04-27AD814799.20 ppb
2017-04-27AD814757.50 ppb
2017-04-27AD814781.80 ppb
2017-04-27AD814777.50 ppb
2017-07-06AD88484ND
2017-07-06AD88482ND
2017-07-25AD9063711.0 ppb
2017-07-25AD9064112.0 ppb
2017-07-25AD906392.00 ppb
2017-07-25AD905308.60 ppb
2017-07-25AD9052210.9 ppb
2017-07-25AD9052511.5 ppb
2017-07-25AD905438.50 ppb
2017-07-25AD9054510.6 ppb
2017-07-25AD9054412.4 ppb
2017-07-25AD9052313.1 ppb
2017-07-25AD905326.30 ppb
2017-07-25AD9052411.4 ppb
2017-07-25AD9053110.6 ppb
2017-07-25AD905219.40 ppb
2017-07-26AD90867ND
2017-07-26AD908458.80 ppb
2017-07-26AD9079912.4 ppb
2017-07-26AD9080411.7 ppb
2017-07-26AD9079612.2 ppb
2017-07-26AD907977.40 ppb
2017-07-26AD9080212.8 ppb
2017-08-15AD931227.40 ppb
2017-08-15AD930986.60 ppb
2017-08-15AD931208.40 ppb
2017-08-15AD931042.40 ppb
2017-09-11AD95487ND
2017-09-11AD954932.10 ppb
2017-09-11AD95485ND
2017-09-26AD980552.50 ppb
2017-09-26AD980577.40 ppb
2017-11-07AE03895ND
2017-11-07AE03877ND
2017-11-07AE03875ND
2017-11-07AE03897ND
2017-11-07AE03883ND
2017-11-07AE03881ND
2017-11-14AE04773ND
2017-11-15AE049367.40 ppb
2017-11-15AE049335.60 ppb
2017-11-15AE049256.90 ppb
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2017-11-15AE049246.00 ppb
2017-11-15AE049267.00 ppb
2017-11-15AE04927ND
2017-11-15AE049296.70 ppb
2017-11-15AE049356.90 ppb
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2017-11-16AE051829.00 ppb
2017-12-04AE06600ND
2017-12-04AE06598ND