Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Dalapon

City of Humble

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

 

106

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
2014ND210ND
2015ND160ND
2016ND160ND
2017ND210ND
2018ND160ND
2019ND160ND

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
2014-02-11AC42263ND
2014-02-11AC42261ND
2014-02-11AC42267ND
2014-02-11AC42269ND
2014-02-11AC42268ND
2014-02-11AC42180ND
2014-02-11AC42190ND
2014-02-11AC42170ND
2014-02-11AC42181ND
2014-04-02AC49089ND
2014-04-02AC49090ND
2014-04-02AC49091ND
2014-04-02AC49094ND
2014-07-07AC58935ND
2014-07-07AC58933ND
2014-07-07AC58942ND
2014-07-07AC58941ND
2014-10-03AC68886ND
2014-10-03AC68899ND
2014-10-03AC68900ND
2014-10-03AC68920ND
2015-01-20AC76943ND
2015-01-20AC76933ND
2015-01-20AC76931ND
2015-01-20AC76926ND
2015-04-10AC87958ND
2015-04-10AC87952ND
2015-04-10AC87954ND
2015-04-10AC87953ND
2015-07-01AC98203ND
2015-07-01AC98199ND
2015-07-01AC98192ND
2015-07-01AC98198ND
2015-10-05AD09401ND
2015-10-05AD09393ND
2015-10-05AD09400ND
2015-10-05AD09398ND
2016-01-21AD19241ND
2016-01-21AD19238ND
2016-01-21AD19233ND
2016-01-21AD19234ND
2016-04-08AD32545ND
2016-04-08AD32544ND
2016-04-08AD32529ND
2016-04-08AD32542ND
2016-07-08AD43573ND
2016-07-08AD43569ND
2016-07-08AD43572ND
2016-07-08AD43574ND
2016-10-07AD52791ND
2016-10-07AD52788ND
2016-10-07AD52790ND
2016-10-07AD52792ND
2017-01-05AD63331ND
2017-01-05AD63342ND
2017-01-05AD63329ND
2017-01-05AD63326ND
2017-01-05AD63201ND
2017-01-05AD63202ND
2017-01-05AD63208ND
2017-01-05AD63209ND
2017-04-21AD80605ND
2017-04-21AD80608ND
2017-04-21AD80607ND
2017-04-21AD80606ND
2017-04-21AD80772ND
2017-07-13AD89263ND
2017-07-13AD89261ND
2017-07-13AD89262ND
2017-07-13AD89264ND
2017-10-13AE00788ND
2017-10-13AE00769ND
2017-10-13AE00784ND
2017-10-13AE00787ND
2018-01-19AE09481ND
2018-01-19AE09491ND
2018-01-19AE09492ND
2018-01-19AE09490ND
2018-04-03AE20976ND
2018-04-03AE20973ND
2018-04-03AE20978ND
2018-04-03AE20977ND
2018-07-31AE35302ND
2018-07-31AE35293ND
2018-07-31AE35299ND
2018-07-31AE35301ND
2018-10-10AE43258ND
2018-10-10AE43253ND
2018-10-10AE43257ND
2018-10-10AE43260ND
2019-01-15AE49795ND
2019-01-15AE49797ND
2019-01-15AE49798ND
2019-01-15AE49796ND
2019-04-04AE61187ND
2019-04-04AE61184ND
2019-04-04AE61185ND
2019-04-04AE61186ND
2019-08-16AE79262ND
2019-08-16AE79263ND
2019-08-16AE79264ND
2019-08-16AE79265ND
2019-10-01AE85303ND
2019-10-01AE85298ND
2019-10-01AE85308ND
2019-10-01AE85305ND