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EWG's Tap Water Database — 2019 UPDATE

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Pentachlorophenol

City of Houston

Pentachlorophenol is a carcinogenic chemical used as a wood preservative. It harms developing fetuses, and causes immune suppression and hormone disruption.

 

221

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND420ND
2013ND330ND
2014ND460ND
2015ND370ND
2016ND250ND
2017ND380ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.3 ppb

The EWG Health Guideline of 0.3 ppb for pentachlorophenol was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer.

EPA Maximum Contaminant
Level (MCL) 1 ppb

The legal limit for pentachlorophenol, established in 1991, was based on analytical detection limits at the time that the standard was set.

ppb = parts per billion

All test results

Date Lab ID Result
2012-01-31AB79849ND
2012-01-31AB79852ND
2012-01-31AB79850ND
2012-01-31AB79847ND
2012-01-31AB79851ND
2012-01-31AB79819ND
2012-02-01AB79844ND
2012-02-01AB79843ND
2012-02-01AB79846ND
2012-02-01AB79845ND
2012-04-10AB86429ND
2012-04-10AB86427ND
2012-04-10AB86430ND
2012-04-10AB86428ND
2012-04-10AB86431ND
2012-05-23AB90945ND
2012-05-23AB90946ND
2012-05-23AB90939ND
2012-05-23AB90943ND
2012-05-23AB90942ND
2012-05-23AB90944ND
2012-06-11AB92217ND
2012-06-12AB92383ND
2012-06-12AB92386ND
2012-06-12AB92384ND
2012-07-24AB96072ND
2012-07-24AB96069ND
2012-07-24AB96067ND
2012-07-24AB96071ND
2012-07-24AB96070ND
2012-07-24AB96066ND
2012-07-24AB96068ND
2012-07-24AB96065ND
2012-11-08AC04926ND
2012-11-08AC04924ND
2012-11-08AC04928ND
2012-11-08AC04925ND
2012-11-19AC05465ND
2012-11-19AC05463ND
2012-11-19AC05461ND
2012-11-19AC05464ND
2012-11-19AC05462ND
2013-02-25AC11605ND
2013-02-25AC11602ND
2013-02-25AC11604ND
2013-02-25AC11603ND
2013-02-25AC11606ND
2013-02-25AC11627ND
2013-02-25AC11624ND
2013-02-25AC11630ND
2013-02-25AC11628ND
2013-02-25AC11629ND
2013-02-26AC11815ND
2013-02-26AC11849ND
2013-03-11AC12926ND
2013-03-11AC12928ND
2013-03-11AC12937ND
2013-03-11AC12929ND
2013-03-11AC12965ND
2013-03-11AC12968ND
2013-03-11AC12966ND
2013-03-11AC12969ND
2013-06-12AC22141ND
2013-06-12AC22140ND
2013-06-12AC22138ND
2013-06-13AC22146ND
2013-06-13AC22139ND
2013-08-08AC27277ND
2013-08-08AC27276ND
2013-08-08AC27278ND
2013-08-08AC27274ND
2013-08-08AC27275ND
2013-10-24AC33318ND
2013-12-16AC37695ND
2013-12-17AC37823ND
2014-02-03AC41128ND
2014-03-14AC47183ND
2014-03-14AC47184ND
2014-03-14AC47185ND
2014-03-14AC47173ND
2014-04-16AC50928ND
2014-04-16AC50929ND
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
2014-04-17AC51177ND
2014-06-03AC55831ND
2014-06-03AC55826ND
2014-06-03AC55820ND
2014-07-15AC59733ND
2014-07-15AC59729ND
2014-07-16AC59859ND
2014-08-14AC63734ND
2014-08-14AC63738ND
2014-08-14AC63737ND
2014-08-14AC63740ND
2014-10-08AC69250ND
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
2014-12-18AC75488ND
2014-12-18AC75489ND
2014-12-18AC75473ND
2015-03-04AC83061ND
2015-03-04AC83059ND
2015-03-04AC83017ND
2015-03-05AC83064ND
2015-03-05AC83065ND
2015-03-24AC85944ND
2015-06-04AC94707ND
2015-06-04AC94705ND
2015-06-04AC94710ND
2015-06-04AC94709ND
2015-06-04AC94706ND
2015-06-04AC94708ND
2015-07-22AD00679ND
2015-07-22AD00678ND
2015-09-17AD07649ND
2015-09-17AD07648ND
2015-10-22AD11601ND
2015-10-22AD11600ND
2015-10-22AD11602ND
2015-10-22AD11596ND
2015-10-22AD11599ND
2015-10-22AD11598ND
2015-10-22AD11597ND
2015-11-12AD13457ND
2015-11-12AD13444ND
2015-11-12AD13456ND
2015-11-12AD13453ND
2015-11-12AD13443ND
2015-11-12AD13452ND
2015-11-12AD13455ND
2015-11-12AD13454ND
2015-11-16AD13699ND
2015-11-16AD13701ND
2015-11-16AD13700ND
2015-11-17AD13907ND
2015-12-08AD16048ND
2015-12-08AD16049ND
2016-02-18AD24477ND
2016-03-03AD27014ND
2016-03-03AD26975ND
2016-03-16AD29223ND
2016-03-16AD29222ND
2016-03-16AD29181ND
2016-03-16AD29178ND
2016-03-17AD29432ND
2016-03-17AD29430ND
2016-03-17AD29414ND
2016-03-17AD29435ND
2016-03-17AD29433ND
2016-03-23AD30249ND
2016-03-23AD30250ND
2016-03-23AD30248ND
2016-03-23AD30221ND
2016-03-23AD30251ND
2016-06-08AD39863ND
2016-06-08AD39861ND
2016-06-08AD39862ND
2016-06-08AD39860ND
2016-09-20AD50441ND
2016-09-20AD50440ND
2016-09-21AD50866ND
2016-10-06AD52699ND
2017-01-26AD67268ND
2017-01-26AD67274ND
2017-01-26AD67273ND
2017-01-26AD67267ND
2017-02-28AD72569ND
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
2017-04-27AD81578ND
2017-04-27AD81577ND
2017-07-06AD88537ND
2017-07-06AD88535ND
2017-07-26AD90913ND
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
2017-12-04AE06626ND
2017-12-04AE06625ND