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EWG's Tap Water Database — 2021 UPDATE

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1,2,3-Trichloropropane

San Antonio Water System

1,2,3-Trichloropropane is a potent carcinogen that contaminates drinking water in agricultural regions where it was historically used as soil fumigant. Click here to read more about carcinogenic VOCs.

 

421

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND630ND
2015ND1010ND
2016ND540ND
2017ND1020ND
2018ND510ND
2019ND500ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.0007 ppb

The EWG Health Guideline of 0.0007 ppb for 1,2,3-trichloropropane 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.

ppb = parts per billion

All test results

Date Lab ID Result
2014-01-13AC38543ND
2014-01-13AC38545ND
2014-01-13AC38557ND
2014-01-13AC38565ND
2014-01-13AC38585ND
2014-01-13AC38567ND
2014-01-13AC38583ND
2014-01-13AC38579ND
2014-01-14AC38772ND
2014-01-14AC38804ND
2014-01-14AC38820ND
2014-01-14AC38832ND
2014-01-14AC38802ND
2014-01-14AC38818ND
2014-01-15AC39032ND
2014-03-31AC48706ND
2014-03-31AC48704ND
2014-03-31AC48700ND
2014-03-31AC48708ND
2014-03-31AC48736ND
2014-03-31AC48732ND
2014-03-31AC48714ND
2014-03-31AC48728ND
2014-03-31AC48730ND
2014-03-31AC48734ND
2014-05-13AC53983ND
2014-05-13AC53979ND
2014-05-13AC53997ND
2014-05-13AC53999ND
2014-05-16AC54447ND
2014-05-16AC54437ND
2014-05-16AC54471ND
2014-06-30AC58420ND
2014-06-30AC58424ND
2014-06-30AC58426ND
2014-07-29AC61365ND
2014-07-29AC61367ND
2014-07-29AC61381ND
2014-07-29AC61385ND
2014-07-29AC61383ND
2014-07-29AC61351ND
2014-07-30AC61541ND
2014-07-30AC61561ND
2014-07-31AC61762ND
2014-07-31AC61766ND
2014-09-02AC65443ND
2014-09-02AC65467ND
2014-09-29AC68388ND
2014-09-29AC68406ND
2014-09-29AC68404ND
2014-09-29AC68408ND
2014-09-29AC68392ND
2014-09-30AC68574ND
2014-09-30AC68572ND
2014-09-30AC68570ND
2014-09-30AC68576ND
2014-10-01AC68680ND
2014-11-25AC72982ND
2014-11-25AC73000ND
2014-11-25AC72998ND
2014-12-02AC73351ND
2014-12-02AC73353ND
2014-12-03AC73484ND
2015-03-05AC82896ND
2015-03-09201503110220AMND
2015-03-09201503110222AMND
2015-03-09201503110218AMND
2015-03-10201502090197AMND
2015-03-10201502090158AMND
2015-03-10201502090234AMND
2015-03-10201502090223AMND
2015-03-10201502090159AMND
2015-03-10201502090139AMND
2015-03-10201502090242AMND
2015-03-10201502090174AMND
2015-03-10201502090208AMND
2015-03-10201502090198AMND
2015-03-10201502090209AMND
2015-03-10201502090244AMND
2015-03-10201502090225AMND
2015-03-10201502090226AMND
2015-03-11201502090157AMND
2015-03-11201502090276AMND
2015-03-11201502090263AMND
2015-03-11201502090243AMND
2015-03-11201502090240AMND
2015-03-11201502090233AMND
2015-03-11201502090196AMND
2015-03-11201502090251AMND
2015-03-11201502090206AMND
2015-03-11201502090241AMND
2015-03-11201502090175AMND
2015-03-11201502090235AMND
2015-03-11201502090224AMND
2015-03-11201502090145AMND
2015-03-12201503140088AMND
2015-03-13201503140208AMND
2015-04-02AC87119ND
2015-04-02AC87121ND
2015-04-02AC87123ND
2015-04-02AC87125ND
2015-06-03AC94441ND
2015-06-04AC94629ND
2015-06-04AC94669ND
2015-06-29201506300299AMND
2015-07-07AC98577ND
2015-07-30AD01822ND
2015-07-30AD01796ND
2015-07-30AD01808ND
2015-07-30AD01818ND
2015-07-30AD01784ND
2015-07-30AD01800ND
2015-07-30AD01862ND
2015-09-14201508270375AMND
2015-09-14201508270381AMND
2015-09-14201508270380AMND
2015-09-14201508270371AMND
2015-09-14201508270398AMND
2015-09-14201508270400AMND
2015-09-14201508270399AMND
2015-09-14201508270386AMND
2015-09-14201508270366AMND
2015-09-15201508270378AMND
2015-09-15201508270374AMND
2015-09-15201508270376AMND
2015-09-15201508270382AMND
2015-09-15201508270383AMND
2015-09-15201508270368AMND
2015-09-15201509170012AMND
2015-09-15201508270369AMND
2015-09-15201508270373AMND
2015-09-15201508270372AMND
2015-09-15201508270370AMND
2015-09-15201508270401AMND
2015-09-15201508270385AMND
2015-09-15201508270396AMND
2015-09-16201508270363AMND
2015-09-16201508270379AMND
2015-09-16201508270367AMND
2015-09-16201508270387AMND
2015-09-16201508270384AMND
2015-09-16201508270394AMND
2015-09-16201508270395AMND
2015-09-16201508270392AMND
2015-09-17201508270364AMND
2015-09-17201508270377AMND
2015-09-17201509180417AMND
2015-09-17201508270389AMND
2015-09-28AD08800ND
2015-09-28AD08796ND
2015-09-28AD08794ND
2015-09-29AD09011ND
2015-09-29AD08981ND
2015-09-29AD08983ND
2015-09-29AD08973ND
2015-10-28AD12024ND
2015-10-28AD11992ND
2015-10-28AD12012ND
2015-10-28AD12022ND
2015-11-23AD14447ND
2015-11-23AD14445ND
2015-11-23AD14449ND
2015-11-23AD14475ND
2015-12-04201512050172AMND
2016-01-13AD17917ND
2016-01-13AD17919ND
2016-01-13AD17955ND
2016-01-14AD18237ND
2016-04-05AD31830ND
2016-04-05AD31832ND
2016-04-05AD31834ND
2016-04-05AD31836ND
2016-04-06AD32103ND
2016-04-06AD32105ND
2016-04-06AD32101ND
2016-04-06AD32099ND
2016-04-07AD32294ND
2016-04-07AD32300ND
2016-04-07AD32292ND
2016-04-07AD32302ND
2016-04-07AD32298ND
2016-04-07AD32296ND
2016-06-01AD38979ND
2016-06-28AD42163ND
2016-06-28AD42253ND
2016-06-28AD42161ND
2016-06-28AD42245ND
2016-09-01AD47698ND
2016-09-01AD47726ND
2016-09-01AD47696ND
2016-09-01AD47692ND
2016-09-01AD47730ND
2016-10-06AD52690ND
2016-10-06AD52686ND
2016-10-31AD55514ND
2016-10-31AD55512ND
2016-10-31AD55516ND
2016-11-02AD56180ND
2016-11-02AD56178ND
2016-11-02AD56182ND
2016-11-02AD56210ND
2016-11-02AD56224ND
2016-11-02AD56212ND
2016-11-02AD56228ND
2016-11-03AD56482ND
2016-11-03AD56476ND
2016-11-03AD56532ND
2016-11-04AD56869ND
2016-11-28AD59210ND
2016-11-28AD59204ND
2016-11-28AD59206ND
2016-11-28AD59208ND
2016-11-28AD59196ND
2016-11-29AD59399ND
2016-11-29AD59387ND
2016-11-29AD59389ND
2016-11-29AD59405ND
2016-11-29AD59407ND
2017-01-30AD67535ND
2017-01-30AD67551ND
2017-01-30AD67537ND
2017-01-30AD67615ND
2017-01-30AD67609ND
2017-01-30AD67604ND
2017-01-30AD67605ND
2017-02-01AD68125ND
2017-02-01AD68107ND
2017-02-01AD68159ND
2017-02-01AD68161ND
2017-02-02AD68417ND
2017-02-02AD68473ND
2017-03-06AD73465ND
2017-03-06AD73473ND
2017-03-06AD73483ND
2017-03-06AD73467ND
2017-03-06AD73503ND
2017-03-06AD73505ND
2017-03-06AD73491ND
2017-03-06AD73501ND
2017-03-29AD77480ND
2017-03-29AD77474ND
2017-03-29AD77476ND
2017-03-29AD77478ND
2017-03-29AD77482ND
2017-03-29AD77508ND
2017-03-29AD77506ND
2017-03-29AD77502ND
2017-03-29AD77504ND
2017-03-29AD77498ND
2017-03-30AD77778ND
2017-03-30AD77776ND
2017-03-30AD77774ND
2017-03-30AD77828ND
2017-03-30AD77830ND
2017-03-30AD77826ND
2017-04-25AD80968ND
2017-04-25AD80994ND
2017-05-24AD85476ND
2017-05-24AD85546ND
2017-07-06AD88490ND
2017-07-06AD88494ND
2017-07-06AD88492ND
2017-07-06AD88532ND
2017-07-06AD88530ND
2017-07-06AD88534ND
2017-07-07AD88732ND
2017-09-11AD95433ND
2017-09-11AD95469ND
2017-09-11AD95465ND
2017-09-11AD95547ND
2017-09-11AD95545ND
2017-09-11AD95549ND
2017-10-17AE01129ND
2017-10-17AE01141ND
2017-10-18AE01382ND
2017-10-18AE01392ND
2017-10-18AE01384ND
2017-10-18AE01406ND
2017-10-18AE01404ND
2017-10-18AE01408ND
2017-12-04AE06576ND
2017-12-04AE06580ND
2017-12-04AE06582ND
2017-12-04AE06620ND
2017-12-05AE06802ND
2017-12-05AE06804ND
2017-12-05AE06806ND
2017-12-05AE06808ND
2017-12-05AE06814ND
2017-12-05AE06810ND
2017-12-06AE06998ND
2017-12-06AE06996ND
2017-12-06AE06994ND
2017-12-06AE07000ND
2017-12-06AE07038ND
2017-12-07AE07237ND
2017-12-07AE07229ND
2017-12-07AE07235ND
2017-12-07AE07233ND
2017-12-07AE07239ND
2017-12-07AE07231ND
2017-12-07AE07261ND
2017-12-07AE07263ND
2017-12-07AE07255ND
2017-12-07AE07267ND
2017-12-07AE07257ND
2017-12-07AE07259ND
2017-12-08AE07447ND
2017-12-08AE07427ND
2017-12-08AE07449ND
2017-12-13AE07670ND
2017-12-13AE07678ND
2017-12-13AE07672ND
2017-12-13AE07676ND
2017-12-13AE07690ND
2017-12-13AE07696ND
2017-12-13AE07698ND
2017-12-13AE07694ND
2017-12-20AE07870ND
2017-12-20AE07872ND
2018-03-01AE16352ND
2018-03-01AE16364ND
2018-03-01AE16374ND
2018-03-01AE16396ND
2018-03-15AE18622ND
2018-03-15AE18682ND
2018-03-26AE19940ND
2018-03-26AE19962ND
2018-05-09AE25777ND
2018-05-09AE25795ND
2018-05-10AE25963ND
2018-05-10AE25983ND
2018-06-06AE28871ND
2018-06-06AE28877ND
2018-07-02AE32261ND
2018-07-02AE32293ND
2018-07-19AE33971ND
2018-07-19AE33983ND
2018-07-23AE34141ND
2018-08-31AE39165ND
2018-09-26AE41772ND
2018-09-26AE41722ND
2018-09-26AE41718ND
2018-09-26AE41764ND
2018-09-26AE41770ND
2018-09-27AE41964ND
2018-09-27AE42030ND
2018-09-27AE42034ND
2018-09-27AE42032ND
2018-09-27AE41978ND
2018-09-27AE42036ND
2018-09-27AE41976ND
2018-10-05AE42822ND
2018-10-05AE42834ND
2018-11-19AE46510ND
2018-11-19AE46514ND
2018-11-19AE46508ND
2018-11-19AE46516ND
2018-11-19AE46512ND
2018-11-19AE46506ND
2018-11-19AE46520ND
2018-11-20AE46675ND
2018-12-07AE48412ND
2018-12-07AE48420ND
2018-12-07AE48418ND
2018-12-07AE48410ND
2018-12-07AE48416ND
2018-12-13AE48854ND
2018-12-13AE48852ND
2018-12-13AE48836ND
2018-12-13AE48868ND
2019-01-29AE51987ND
2019-01-29AE51989ND
2019-01-30AE52202ND
2019-01-30AE52268ND
2019-01-31AE52473ND
2019-01-31AE52469ND
2019-01-31AE52471ND
2019-01-31AE52501ND
2019-01-31AE52503ND
2019-03-07AE57602ND
2019-03-07AE57628ND
2019-03-28AE60470ND
2019-03-28AE60468ND
2019-03-28AE60466ND
2019-03-28AE60500ND
2019-03-28AE60502ND
2019-04-23AE63404ND
2019-04-23AE63402ND
2019-04-23AE63398ND
2019-04-23AE63410ND
2019-04-25AE63728ND
2019-04-25AE63762ND
2019-05-17AE67160ND
2019-05-17AE67220ND
2019-05-21AE67410ND
2019-05-21AE67412ND
2019-05-21AE67414ND
2019-05-21AE67424ND
2019-08-13AE78341ND
2019-08-13AE78339ND
2019-08-13AE78359ND
2019-10-31AE88168ND
2019-10-31AE88192ND
2019-11-13AE89135ND
2019-11-13AE89133ND
2019-11-14AE89282ND
2019-11-14AE89286ND
2019-11-25AE90444ND
2019-11-25AE90442ND
2019-11-25AE90440ND
2019-11-25AE90446ND
2019-11-26AE90617ND
2019-11-26AE90619ND
2019-11-26AE90639ND
2019-12-10AE91927ND
2019-12-10AE91921ND
2019-12-10AE91925ND
2019-12-10AE91923ND
2019-12-11AE92160ND
2019-12-11AE92162ND