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EWG's Tap Water Database — 2021 UPDATE

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Dalapon

City of Kerrville

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

 

118

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
20140.286 ppb214ND - 2.20 ppb
2015ND160ND
20160.282 ppb174ND - 1.40 ppb
20170.0429 ppb281ND - 1.20 ppb
20180.184 ppb193ND - 1.30 ppb
20190.141 ppb172ND - 1.20 ppb

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
2014-02-10AC41884ND
2014-02-10AC41885ND
2014-02-10AC41886ND
2014-02-10AC41887ND
2014-04-07AC49531ND
2014-04-07AC49530ND
2014-04-07AC49596ND
2014-04-07AC49595ND
2014-04-07AC49623ND
2014-05-28AC55372ND
2014-07-16AC59858ND
2014-07-16AC598991.20 ppb
2014-07-16AC59871ND
2014-07-16AC599002.20 ppb
2014-07-16AC59869ND
2014-10-15AC69754ND
2014-10-15AC69753ND
2014-10-15AC697831.40 ppb
2014-10-15AC69779ND
2014-10-15AC697841.20 ppb
2014-10-15AC69778ND
2015-01-28AC78117ND
2015-01-28AC78118ND
2015-01-28AC78129ND
2015-01-28AC78116ND
2015-04-15AC88342ND
2015-04-15AC88340ND
2015-04-15AC88339ND
2015-04-15AC88341ND
2015-07-20AD00076ND
2015-07-20AD00078ND
2015-07-20AD00085ND
2015-07-20AD00081ND
2015-10-13AD10439ND
2015-10-13AD10429ND
2015-10-13AD10431ND
2015-10-13AD10430ND
2016-02-01AD21211ND
2016-02-01AD21038ND
2016-02-01AD21042ND
2016-02-01AD21043ND
2016-02-01AD21040ND
2016-04-18AD33318ND
2016-04-18AD33319ND
2016-04-18AD33320ND
2016-04-18AD33316ND
2016-07-05AD429161.30 ppb
2016-07-05AD429171.40 ppb
2016-07-05AD42909ND
2016-07-05AD429151.10 ppb
2016-10-24AD542781.000 ppb
2016-10-24AD54279ND
2016-10-24AD54284ND
2016-10-24AD54285ND
2017-02-13AD70362ND
2017-02-13AD70360ND
2017-02-13AD70353ND
2017-02-13AD70357ND
2017-04-06AD78785ND
2017-04-06AD78711ND
2017-04-06AD78712ND
2017-04-06AD78713ND
2017-04-06AD78710ND
2017-05-08AD83157ND
2017-05-08AD83154ND
2017-05-09AD83420ND
2017-05-09AD83421ND
2017-05-09AD83416ND
2017-05-22AD85094ND
2017-07-05AD88288ND
2017-07-05AD882891.20 ppb
2017-07-05AD88287ND
2017-07-05AD88290ND
2017-07-05AD88358ND
2017-07-05AD88359ND
2017-07-05AD88360ND
2017-10-09AD99756ND
2017-10-09AD99757ND
2017-10-09AD99760ND
2017-10-09AD99755ND
2017-10-09AD99896ND
2017-10-09AD99895ND
2018-01-08AE08167ND
2018-01-08AE08161ND
2018-01-08AE08033ND
2018-01-08AE08022ND
2018-01-08AE08036ND
2018-01-08AE08028ND
2018-03-22AE19718ND
2018-04-02AE20826ND
2018-04-02AE20824ND
2018-04-02AE20825ND
2018-04-02AE208221.10 ppb
2018-07-16AE33325ND
2018-07-16AE333261.30 ppb
2018-07-16AE33323ND
2018-07-16AE333241.10 ppb
2018-10-01AE42194ND
2018-10-01AE42190ND
2018-10-01AE42191ND
2018-10-01AE42189ND
2019-01-14AE49533ND
2019-01-14AE49535ND
2019-01-14AE49531ND
2019-01-14AE49536ND
2019-04-08AE61340ND
2019-04-08AE61339ND
2019-04-08AE61366ND
2019-04-08AE61345ND
2019-04-08AE61467ND
2019-07-15AE74342ND
2019-07-15AE74344ND
2019-07-15AE74343ND
2019-07-15AE74341ND
2019-10-03AE85669ND
2019-10-03AE856681.20 ppb
2019-10-03AE85670ND
2019-10-03AE856711.20 ppb