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EWG's Tap Water Database — 2021 UPDATE

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Dalapon

Harlingen Water Works System

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

MORE ABOUT THIS CONTAMINANT

 

195

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014ND320ND
2015ND310ND
2016ND340ND
2017ND320ND
2018ND320ND
2019ND340ND

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
2014-03-06AC45941ND
2014-03-06AC45934ND
2014-03-06AC45936ND
2014-03-06AC45973ND
2014-03-06AC45937ND
2014-03-06AC45955ND
2014-03-06AC45932ND
2014-03-06AC45972ND
2014-05-07AC53452ND
2014-05-07AC53473ND
2014-05-07AC53446ND
2014-05-07AC53476ND
2014-05-07AC53462ND
2014-05-07AC53458ND
2014-05-07AC53450ND
2014-06-24AC57910ND
2014-07-22AC60580ND
2014-07-22AC60584ND
2014-07-22AC60583ND
2014-07-22AC60586ND
2014-07-22AC60606ND
2014-07-22AC60585ND
2014-07-22AC60602ND
2014-07-22AC60581ND
2014-10-07AC68992ND
2014-10-07AC68998ND
2014-10-07AC68990ND
2014-10-07AC68997ND
2014-10-07AC68989ND
2014-10-07AC68993ND
2014-10-07AC68995ND
2014-10-07AC68999ND
2015-03-19AC85261ND
2015-03-19AC85257ND
2015-03-19AC85287ND
2015-03-19AC85253ND
2015-03-19AC85251ND
2015-03-19AC85262ND
2015-03-19AC85286ND
2015-06-18AC96562ND
2015-06-18AC96560ND
2015-06-18AC96596ND
2015-06-18AC96561ND
2015-06-18AC96598ND
2015-06-18AC96599ND
2015-06-18AC96555ND
2015-06-18AC96557ND
2015-09-22AD07995ND
2015-09-22AD07973ND
2015-09-22AD08010ND
2015-09-22AD07993ND
2015-09-22AD08007ND
2015-09-22AD08011ND
2015-09-22AD07997ND
2015-09-22AD07992ND
2015-11-12AD13360ND
2015-11-12AD13357ND
2015-11-12AD13356ND
2015-11-12AD13353ND
2015-11-12AD13352ND
2015-11-12AD13355ND
2015-11-12AD13354ND
2015-11-12AD13359ND
2016-03-08AD27677ND
2016-03-08AD27510ND
2016-03-08AD27514ND
2016-03-08AD27512ND
2016-03-08AD27509ND
2016-03-08AD27517ND
2016-03-08AD27519ND
2016-03-08AD27518ND
2016-03-08AD27513ND
2016-06-27AD41954ND
2016-06-27AD41785ND
2016-06-27AD41790ND
2016-06-27AD41782ND
2016-06-27AD41781ND
2016-06-27AD41783ND
2016-06-27AD41780ND
2016-06-27AD41788ND
2016-06-27AD41791ND
2016-09-28AD51899ND
2016-09-28AD51900ND
2016-09-28AD51898ND
2016-09-28AD51905ND
2016-09-28AD51906ND
2016-09-28AD51895ND
2016-09-28AD51897ND
2016-09-28AD51901ND
2016-12-06AD60615ND
2016-12-06AD60628ND
2016-12-06AD60629ND
2016-12-06AD60614ND
2016-12-06AD60609ND
2016-12-06AD60627ND
2016-12-06AD60611ND
2016-12-06AD60612ND
2017-03-16AD75423ND
2017-03-16AD75419ND
2017-03-16AD75420ND
2017-03-16AD75424ND
2017-03-16AD75421ND
2017-03-16AD75425ND
2017-03-16AD75422ND
2017-03-16AD75426ND
2017-05-18AD84844ND
2017-05-18AD84840ND
2017-05-18AD84841ND
2017-05-18AD84836ND
2017-05-18AD84845ND
2017-05-18AD84839ND
2017-05-18AD84843ND
2017-05-18AD84837ND
2017-08-02AD91739ND
2017-08-02AD91744ND
2017-08-02AD91747ND
2017-08-02AD91738ND
2017-08-02AD91741ND
2017-08-02AD91746ND
2017-08-02AD91742ND
2017-08-02AD91745ND
2017-12-01AE06551ND
2017-12-01AE06541ND
2017-12-01AE06552ND
2017-12-01AE06547ND
2017-12-01AE06550ND
2017-12-01AE06546ND
2017-12-01AE06553ND
2017-12-01AE06548ND
2018-02-20AE14402ND
2018-02-20AE14397ND
2018-02-20AE14385ND
2018-02-20AE14381ND
2018-02-20AE14375ND
2018-02-20AE14390ND
2018-02-20AE14380ND
2018-02-20AE14387ND
2018-04-26AE24140ND
2018-04-26AE24144ND
2018-04-26AE24135ND
2018-04-26AE24146ND
2018-04-26AE24142ND
2018-04-26AE24138ND
2018-04-26AE24136ND
2018-04-26AE24137ND
2018-07-26AE34664ND
2018-07-26AE34662ND
2018-07-26AE34661ND
2018-07-26AE34668ND
2018-07-26AE34667ND
2018-07-26AE34659ND
2018-07-26AE34669ND
2018-07-26AE34663ND
2018-12-10AE48372ND
2018-12-10AE48370ND
2018-12-10AE48379ND
2018-12-10AE48371ND
2018-12-10AE48374ND
2018-12-10AE48382ND
2018-12-10AE48375ND
2018-12-10AE48373ND
2019-02-06AE53264ND
2019-02-06AE53159ND
2019-02-06AE53156ND
2019-02-06AE53157ND
2019-02-06AE53160ND
2019-02-06AE53163ND
2019-02-06AE53158ND
2019-02-06AE53155ND
2019-02-06AE53164ND
2019-04-03AE60980ND
2019-04-03AE60985ND
2019-04-03AE61001ND
2019-04-03AE60998ND
2019-04-03AE60984ND
2019-04-03AE60986ND
2019-04-03AE60988ND
2019-04-03AE60981ND
2019-08-07AE77573ND
2019-08-07AE77405ND
2019-08-07AE77436ND
2019-08-07AE77437ND
2019-08-07AE77438ND
2019-08-07AE77410ND
2019-08-07AE77409ND
2019-08-07AE77411ND
2019-08-07AE77440ND
2019-10-22AE87203ND
2019-10-22AE87215ND
2019-10-22AE87200ND
2019-10-22AE87219ND
2019-10-22AE87221ND
2019-10-22AE87217ND
2019-10-22AE87199ND
2019-10-22AE87198ND