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EWG's Tap Water Database — 2019 UPDATE

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Dalapon

City of Houston

The herbicide dalapon has not been used in the U.S. since 1999. In animal studies, exposure to dalapon harms the kidneys.

 

482

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND720ND
2013ND740ND
2014ND960ND
2015ND640ND
2016ND740ND
2017ND1020ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EPA Maximum Contaminant
Level (MCL) 200 ppb

The legal limit for dalapon, established in 1992, was based on a toxicity study in laboratory animals published in 1960.

ppb = parts per billion

All test results

Date Lab ID Result
2012-01-31AB79819ND
2012-01-31AB79762ND
2012-01-31AB79764ND
2012-01-31AB79761ND
2012-01-31AB79758ND
2012-01-31AB79763ND
2012-01-31AB79766ND
2012-01-31AB79756ND
2012-01-31AB79759ND
2012-01-31AB79760ND
2012-01-31AB79757ND
2012-01-31AB79755ND
2012-01-31AB79765ND
2012-02-01AB79776ND
2012-02-01AB79770ND
2012-02-01AB79772ND
2012-02-01AB79767ND
2012-02-01AB79769ND
2012-02-01AB79771ND
2012-02-01AB79784ND
2012-02-01AB79775ND
2012-02-01AB79783ND
2012-02-01AB79778ND
2012-02-01AB79777ND
2012-06-11AB92173ND
2012-06-11AB92194ND
2012-06-11AB92186ND
2012-06-11AB92171ND
2012-06-11AB92197ND
2012-06-11AB92193ND
2012-06-11AB92198ND
2012-06-11AB92172ND
2012-06-11AB92170ND
2012-06-12AB92352ND
2012-06-12AB92347ND
2012-06-12AB92353ND
2012-06-12AB92343ND
2012-06-12AB92348ND
2012-06-12AB92351ND
2012-06-12AB92344ND
2012-09-19AC01279ND
2012-09-19AC01289ND
2012-09-19AC01284ND
2012-09-19AC01283ND
2012-09-19AC01282ND
2012-09-19AC01280ND
2012-09-19AC01276ND
2012-09-19AC01286ND
2012-09-19AC01277ND
2012-09-19AC01281ND
2012-09-19AC01285ND
2012-09-19AC01290ND
2012-09-20AC01545ND
2012-09-20AC01541ND
2012-09-20AC01542ND
2012-09-20AC01544ND
2012-11-07AC04893ND
2012-11-07AC04897ND
2012-11-07AC04894ND
2012-11-07AC04883ND
2012-11-07AC04891ND
2012-11-07AC04896ND
2012-11-07AC04887ND
2012-11-07AC04895ND
2012-11-07AC04898ND
2012-11-07AC04889ND
2012-11-08AC04890ND
2012-11-08AC04882ND
2012-11-08AC04884ND
2012-11-08AC04886ND
2012-11-08AC04885ND
2012-11-08AC04892ND
2013-02-25AC11605ND
2013-02-25AC11602ND
2013-02-25AC11604ND
2013-02-25AC11603ND
2013-02-25AC11606ND
2013-02-25AC11563ND
2013-02-25AC11558ND
2013-02-25AC11549ND
2013-02-25AC11559ND
2013-02-25AC11553ND
2013-02-25AC11550ND
2013-02-25AC11554ND
2013-02-26AC11815ND
2013-02-26AC11732ND
2013-02-26AC11733ND
2013-02-26AC11734ND
2013-02-26AC11735ND
2013-02-26AC11739ND
2013-02-26AC11730ND
2013-02-26AC11741ND
2013-02-26AC11738ND
2013-02-26AC11731ND
2013-03-11AC12926ND
2013-03-11AC12928ND
2013-03-11AC12937ND
2013-03-11AC12929ND
2013-06-12AC22058ND
2013-06-12AC22055ND
2013-06-12AC22057ND
2013-06-12AC22056ND
2013-06-12AC22067ND
2013-06-12AC22068ND
2013-06-12AC22054ND
2013-06-12AC22077ND
2013-06-13AC22076ND
2013-06-13AC22065ND
2013-06-13AC22069ND
2013-06-13AC22053ND
2013-06-13AC22064ND
2013-06-13AC22060ND
2013-06-13AC22095ND
2013-06-13AC22071ND
2013-09-24AC31160ND
2013-09-24AC31165ND
2013-09-24AC31161ND
2013-09-24AC31163ND
2013-09-24AC31167ND
2013-09-24AC31162ND
2013-09-24AC31164ND
2013-09-24AC31168ND
2013-09-24AC31170ND
2013-09-24AC31169ND
2013-09-24AC31166ND
2013-09-24AC31159ND
2013-09-24AC31172ND
2013-09-25AC31332ND
2013-09-25AC31322ND
2013-09-25AC31334ND
2013-12-16AC37635ND
2013-12-16AC37640ND
2013-12-16AC37639ND
2013-12-16AC37641ND
2013-12-16AC37638ND
2013-12-16AC37642ND
2013-12-17AC37798ND
2013-12-17AC37804ND
2013-12-17AC37805ND
2013-12-17AC37801ND
2013-12-17AC37803ND
2013-12-17AC37802ND
2013-12-17AC37797ND
2013-12-17AC37796ND
2013-12-17AC37808ND
2013-12-17AC37806ND
2014-03-05AC45667ND
2014-03-05AC45666ND
2014-03-05AC45649ND
2014-03-05AC45663ND
2014-03-05AC45650ND
2014-03-05AC45652ND
2014-03-05AC45687ND
2014-03-05AC45688ND
2014-03-05AC45662ND
2014-03-05AC45665ND
2014-03-05AC45651ND
2014-03-05AC45669ND
2014-03-05AC45648ND
2014-03-06AC45965ND
2014-03-06AC45943ND
2014-03-06AC45968ND
2014-03-14AC47173ND
2014-04-16AC50891ND
2014-04-16AC50893ND
2014-04-16AC50899ND
2014-04-16AC50892ND
2014-04-17AC51139ND
2014-04-17AC51143ND
2014-04-17AC51142ND
2014-04-17AC51144ND
2014-04-17AC51140ND
2014-04-17AC51141ND
2014-04-17AC51150ND
2014-04-17AC51138ND
2014-05-19AC54558ND
2014-05-19AC54559ND
2014-05-19AC54574ND
2014-05-19AC54560ND
2014-05-19AC54566ND
2014-05-19AC54552ND
2014-05-19AC54556ND
2014-05-19AC54563ND
2014-05-19AC54553ND
2014-05-19AC54568ND
2014-05-20AC54716ND
2014-05-20AC54748ND
2014-05-20AC54708ND
2014-05-20AC54719ND
2014-05-20AC54715ND
2014-05-20AC54713ND
2014-06-03AC55820ND
2014-07-15AC59753ND
2014-07-15AC59757ND
2014-07-15AC59754ND
2014-07-15AC59755ND
2014-07-15AC59752ND
2014-07-15AC59749ND
2014-07-15AC59770ND
2014-07-15AC59769ND
2014-07-15AC59750ND
2014-07-15AC59751ND
2014-07-15AC59756ND
2014-07-16AC59859ND
2014-07-16AC59879ND
2014-07-16AC59878ND
2014-07-16AC59892ND
2014-07-16AC59893ND
2014-07-16AC59897ND
2014-08-14AC63734ND
2014-08-14AC63738ND
2014-08-14AC63737ND
2014-08-14AC63740ND
2014-10-08AC69224ND
2014-10-08AC69228ND
2014-10-08AC69225ND
2014-10-09AC69380ND
2014-10-09AC69377ND
2014-10-09AC69376ND
2014-10-09AC69378ND
2014-10-09AC69375ND
2014-10-09AC69379ND
2014-12-09AC74240ND
2014-12-09AC74239ND
2014-12-09AC74238ND
2014-12-18AC75440ND
2014-12-18AC75453ND
2014-12-18AC75448ND
2014-12-18AC75446ND
2014-12-18AC75451ND
2014-12-18AC75447ND
2014-12-18AC75473ND
2014-12-19AC75631ND
2014-12-19AC75628ND
2014-12-19AC75649ND
2014-12-19AC75637ND
2014-12-19AC75645ND
2014-12-19AC75629ND
2014-12-19AC75625ND
2014-12-19AC75626ND
2014-12-19AC75638ND
2014-12-19AC75633ND
2015-03-04AC83017ND
2015-03-04AC82676ND
2015-03-04AC82679ND
2015-03-04AC82733ND
2015-03-04AC82669ND
2015-03-04AC82675ND
2015-03-04AC82671ND
2015-03-04AC82728ND
2015-03-04AC82667ND
2015-03-04AC82672ND
2015-03-04AC82668ND
2015-03-04AC82664ND
2015-03-04AC82673ND
2015-03-05AC82712ND
2015-03-05AC82708ND
2015-03-05AC82707ND
2015-03-05AC82688ND
2015-06-16AC96151ND
2015-06-16AC96154ND
2015-06-16AC96145ND
2015-06-16AC96139ND
2015-06-16AC96142ND
2015-06-16AC96137ND
2015-06-16AC96155ND
2015-06-16AC96150ND
2015-06-16AC96138ND
2015-06-17AC96243ND
2015-06-17AC96260ND
2015-06-17AC96262ND
2015-06-17AC96274ND
2015-06-17AC96273ND
2015-06-17AC96265ND
2015-09-16AD07294ND
2015-09-16AD07297ND
2015-09-16AD07293ND
2015-09-16AD07312ND
2015-09-16AD07313ND
2015-09-16AD07304ND
2015-09-16AD07302ND
2015-09-16AD07311ND
2015-09-16AD07292ND
2015-09-16AD07329ND
2015-09-16AD07327ND
2015-09-17AD07537ND
2015-09-17AD07538ND
2015-09-17AD07563ND
2015-09-17AD07536ND
2015-09-17AD07546ND
2015-11-16AD13562ND
2015-11-16AD13618ND
2015-11-16AD13561ND
2015-11-16AD13559ND
2015-11-16AD13619ND
2015-11-16AD13558ND
2015-11-16AD13565ND
2015-11-16AD13556ND
2015-11-16AD13557ND
2015-11-16AD13560ND
2015-11-17AD13768ND
2015-11-17AD13773ND
2015-11-17AD13767ND
2015-11-17AD13772ND
2015-11-17AD13771ND
2015-11-17AD13766ND
2016-02-18AD24477ND
2016-03-03AD26975ND
2016-03-16AD29181ND
2016-03-16AD29178ND
2016-03-16AD29018ND
2016-03-16AD29033ND
2016-03-16AD29030ND
2016-03-16AD29037ND
2016-03-16AD29019ND
2016-03-16AD29027ND
2016-03-16AD29029ND
2016-03-16AD29036ND
2016-03-16AD29032ND
2016-03-16AD29026ND
2016-03-17AD29414ND
2016-03-17AD29319ND
2016-03-17AD29323ND
2016-03-17AD29322ND
2016-03-17AD29318ND
2016-03-17AD29320ND
2016-03-17AD29321ND
2016-03-23AD30221ND
2016-06-15AD40718ND
2016-06-15AD40714ND
2016-06-15AD40722ND
2016-06-15AD40725ND
2016-06-15AD40726ND
2016-06-15AD40716ND
2016-06-15AD40719ND
2016-06-15AD40710ND
2016-06-15AD40730ND
2016-06-15AD40727ND
2016-06-15AD40720ND
2016-06-15AD40717ND
2016-06-16AD40972ND
2016-06-16AD40971ND
2016-06-16AD40964ND
2016-06-16AD40968ND
2016-09-20AD50441ND
2016-09-20AD50440ND
2016-09-20AD50324ND
2016-09-20AD50327ND
2016-09-20AD50330ND
2016-09-20AD50329ND
2016-09-20AD50325ND
2016-09-20AD50328ND
2016-09-20AD50326ND
2016-09-21AD50866ND
2016-09-21AD50707ND
2016-09-21AD50686ND
2016-09-21AD50697ND
2016-09-21AD50708ND
2016-09-21AD50712ND
2016-09-21AD50710ND
2016-09-21AD50696ND
2016-09-21AD50706ND
2016-09-21AD50695ND
2016-10-06AD52699ND
2016-11-17AD58543ND
2016-11-17AD58538ND
2016-11-17AD58539ND
2016-11-17AD58536ND
2016-11-17AD58544ND
2016-11-17AD58545ND
2016-11-18AD58825ND
2016-11-18AD58817ND
2016-11-18AD58820ND
2016-11-18AD58816ND
2016-11-18AD58818ND
2016-11-18AD58815ND
2016-11-18AD58819ND
2016-11-18AD58814ND
2016-11-21AD58774ND
2016-11-21AD58775ND
2017-01-26AD67268ND
2017-01-26AD67274ND
2017-01-26AD67273ND
2017-01-26AD67267ND
2017-02-28AD72569ND
2017-02-28AD72422ND
2017-02-28AD72419ND
2017-02-28AD72424ND
2017-02-28AD72399ND
2017-02-28AD72421ND
2017-02-28AD72420ND
2017-02-28AD72398ND
2017-02-28AD72418ND
2017-02-28AD72423ND
2017-02-28AD72397ND
2017-03-01AD72739ND
2017-03-01AD72742ND
2017-03-01AD72745ND
2017-03-01AD72737ND
2017-03-01AD72740ND
2017-03-01AD72738ND
2017-03-02AD73241ND
2017-03-28AD77238ND
2017-03-28AD77237ND
2017-03-28AD77248ND
2017-03-28AD77249ND
2017-03-28AD77239ND
2017-03-29AD77533ND
2017-03-29AD77531ND
2017-03-29AD77530ND
2017-03-29AD77532ND
2017-04-26AD81269ND
2017-04-26AD81142ND
2017-04-26AD81144ND
2017-04-26AD81139ND
2017-04-26AD81140ND
2017-04-26AD81136ND
2017-04-26AD81135ND
2017-04-26AD81143ND
2017-04-26AD81141ND
2017-04-26AD81145ND
2017-04-26AD81146ND
2017-04-26AD81137ND
2017-04-26AD81138ND
2017-04-27AD81578ND
2017-04-27AD81577ND
2017-04-27AD81479ND
2017-04-27AD81475ND
2017-04-27AD81478ND
2017-04-27AD81477ND
2017-07-06AD88537ND
2017-07-06AD88535ND
2017-07-25AD90530ND
2017-07-25AD90522ND
2017-07-25AD90525ND
2017-07-25AD90543ND
2017-07-25AD90545ND
2017-07-25AD90544ND
2017-07-25AD90523ND
2017-07-25AD90532ND
2017-07-25AD90524ND
2017-07-25AD90531ND
2017-07-25AD90521ND
2017-07-26AD90913ND
2017-07-26AD90799ND
2017-07-26AD90804ND
2017-07-26AD90796ND
2017-07-26AD90797ND
2017-07-26AD90802ND
2017-09-11AD95592ND
2017-09-11AD95599ND
2017-09-11AD95596ND
2017-09-11AD95593ND
2017-09-11AD95595ND
2017-09-11AD95597ND
2017-09-26AD98109ND
2017-09-26AD98108ND
2017-11-07AE03918ND
2017-11-07AE03920ND
2017-11-07AE03917ND
2017-11-07AE03916ND
2017-11-07AE03919ND
2017-11-07AE03921ND
2017-11-14AE04808ND
2017-11-15AE04936ND
2017-11-15AE04933ND
2017-11-15AE04925ND
2017-11-15AE04930ND
2017-11-15AE04931ND
2017-11-15AE04924ND
2017-11-15AE04926ND
2017-11-15AE04927ND
2017-11-15AE04929ND
2017-11-15AE04935ND
2017-11-15AE04928ND
2017-11-15AE04934ND
2017-11-15AE04932ND
2017-11-16AE05180ND
2017-11-16AE05181ND
2017-11-16AE05182ND
2017-12-04AE06626ND
2017-12-04AE06625ND