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EWG's Tap Water Database — 2021 UPDATE

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Dalapon

City of Llano

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

 

32

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND20ND
2015ND20ND
2016ND40ND
2017ND60ND
2018ND90ND
2019ND90ND

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
2014-08-13AC63554ND
2014-08-13AC63497ND
2015-04-16AC88630ND
2015-07-31AD01915ND
2016-03-21AD29726ND
2016-06-07AD39594ND
2016-09-21AD50551ND
2016-11-16AD58279ND
2017-02-16AD71040ND
2017-02-16AD71087ND
2017-04-19AD80165ND
2017-07-06AD88476ND
2017-10-03AD99046ND
2017-12-07AE07184ND
2018-02-06AE12463ND
2018-02-06AE12464ND
2018-02-06AE12571ND
2018-04-26AE24134ND
2018-04-26AE24133ND
2018-09-17AE40243ND
2018-09-17AE40242ND
2018-11-27AE46991ND
2018-11-27AE46992ND
2019-02-07AE53456ND
2019-02-07AE53453ND
2019-02-07AE53583ND
2019-04-25AE63696ND
2019-04-25AE63691ND
2019-08-05AE77003ND
2019-08-05AE77002ND
2019-10-08AE85939ND
2019-10-08AE85935ND