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EWG's Tap Water Database — 2019 UPDATE

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1,2,3-Trichlorobenzene

City of Houston

1,2,3-Trichlorobenzene is a solvent and an intermediate for chemical manufacturing that was used historically as an insecticide for termite control. The National Toxicology Program lists it as a "reasonably anticipated" human carcinogen.

 

181

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND190ND
2013ND120ND
2014ND250ND
2015ND390ND
2016ND430ND
2017ND430ND

ppb = parts per billion

All test results

Date Lab ID Result
2012-04-10AB86410ND
2012-04-10AB86406ND
2012-05-23AB90921ND
2012-05-23AB90927ND
2012-05-23AB90925ND
2012-05-23AB90923ND
2012-07-24AB96062ND
2012-07-24AB96064ND
2012-08-10AB97995ND
2012-08-10AB97985ND
2012-08-10AB97987ND
2012-08-10AB97989ND
2012-08-10AB97997ND
2012-08-27AB99665ND
2012-09-19AC01320ND
2012-09-19AC01318ND
2012-09-20AC01557ND
2012-09-20AC01569ND
2012-11-19AC05439ND
2013-02-26AC11755ND
2013-08-08AC27249ND
2013-08-08AC27265ND
2013-08-08AC27243ND
2013-08-08AC27259ND
2013-08-08AC27253ND
2013-08-08AC27263ND
2013-08-08AC27257ND
2013-08-08AC27261ND
2013-08-08AC27255ND
2013-09-25AC31364ND
2013-10-29AC33630ND
2014-04-16AC50842ND
2014-04-16AC50844ND
2014-04-17AC51090ND
2014-04-17AC51078ND
2014-04-17AC51084ND
2014-04-17AC51082ND
2014-06-03AC55801ND
2014-07-15AC59698ND
2014-07-15AC59690ND
2014-07-15AC59692ND
2014-07-15AC59694ND
2014-07-15AC59688ND
2014-07-16AC59835ND
2014-07-16AC59831ND
2014-07-16AC59839ND
2014-07-16AC59849ND
2014-07-16AC59837ND
2014-07-16AC59845ND
2014-10-08AC69209ND
2014-10-09AC69350ND
2014-10-09AC69348ND
2014-12-09AC74196ND
2014-12-09AC74204ND
2014-12-18AC75459ND
2014-12-18AC75455ND
2015-03-04AC82952ND
2015-03-05AC82914ND
2015-03-24AC85888ND
2015-06-04AC94641ND
2015-06-04AC94645ND
2015-06-04AC94639ND
2015-06-04AC94643ND
2015-06-04AC94647ND
2015-07-21AD00437ND
2015-07-21AD00441ND
2015-07-21AD00429ND
2015-07-21AD00435ND
2015-07-21AD00443ND
2015-07-21AD00433ND
2015-07-21AD00405ND
2015-07-21AD00407ND
2015-07-22AD00630ND
2015-07-22AD00628ND
2015-07-22AD00632ND
2015-07-22AD00626ND
2015-07-22AD00624ND
2015-07-22AD00638ND
2015-09-17AD07597ND
2015-09-17AD07599ND
2015-10-22AD11558ND
2015-10-22AD11536ND
2015-10-22AD11542ND
2015-10-22AD11532ND
2015-10-22AD11548ND
2015-10-22AD11550ND
2015-11-12AD13376ND
2015-11-12AD13378ND
2015-11-12AD13382ND
2015-11-12AD13386ND
2015-11-12AD13372ND
2015-11-12AD13380ND
2015-11-12AD13390ND
2015-12-08AD15973ND
2015-12-08AD15967ND
2016-02-18AD24361ND
2016-02-18AD24331ND
2016-02-18AD24299ND
2016-02-18AD24379ND
2016-03-03AD26927ND
2016-03-17AD29381ND
2016-03-17AD29379ND
2016-03-23AD30127ND
2016-03-23AD30131ND
2016-03-23AD30129ND
2016-03-23AD30155ND
2016-06-03AD39456ND
2016-06-08AD39810ND
2016-06-08AD39818ND
2016-06-08AD39806ND
2016-06-08AD39802ND
2016-06-08AD39794ND
2016-06-08AD39808ND
2016-06-16AD41019ND
2016-06-16AD41015ND
2016-06-16AD41013ND
2016-09-20AD50395ND
2016-09-20AD50391ND
2016-09-20AD50373ND
2016-09-20AD50375ND
2016-09-20AD50381ND
2016-09-21AD50831ND
2016-09-21AD50829ND
2016-09-21AD50809ND
2016-09-21AD50825ND
2016-09-22AD50815ND
2016-10-06AD52680ND
2016-10-06AD52682ND
2016-10-06AD52678ND
2016-10-06AD52676ND
2016-10-06AD52674ND
2016-11-18AD58909ND
2016-11-18AD58877ND
2016-11-21AD58875ND
2016-11-21AD58903ND
2016-11-21AD58897ND
2016-11-21AD58879ND
2016-11-21AD58871ND
2017-01-26AD67193ND
2017-01-26AD67205ND
2017-01-26AD67203ND
2017-03-01AD72767ND
2017-03-02AD73096ND
2017-03-02AD73124ND
2017-03-28AD77142ND
2017-03-28AD77184ND
2017-03-28AD77180ND
2017-03-28AD77186ND
2017-03-28AD77178ND
2017-03-29AD77428ND
2017-03-29AD77430ND
2017-03-29AD77444ND
2017-03-29AD77424ND
2017-04-26AD81177ND
2017-04-27AD81524ND
2017-04-27AD81528ND
2017-07-06AD88484ND
2017-07-06AD88482ND
2017-07-25AD90637ND
2017-07-25AD90641ND
2017-07-25AD90639ND
2017-07-26AD90867ND
2017-07-26AD90845ND
2017-08-15AD93122ND
2017-08-15AD93098ND
2017-08-15AD93120ND
2017-08-15AD93104ND
2017-09-11AD95487ND
2017-09-11AD95493ND
2017-09-11AD95485ND
2017-09-26AD98055ND
2017-09-26AD98057ND
2017-11-07AE03895ND
2017-11-07AE03877ND
2017-11-07AE03875ND
2017-11-07AE03897ND
2017-11-07AE03883ND
2017-11-07AE03881ND
2017-11-14AE04773ND
2017-12-04AE06600ND
2017-12-04AE06598ND