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EWG's Tap Water Database — 2021 UPDATE

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Dalapon

Orange County WCID 1

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

 

104

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND180ND
2015ND160ND
2016ND160ND
2017ND210ND
2018ND170ND
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
2014-02-11AC42208ND
2014-02-11AC42188ND
2014-02-11AC42211ND
2014-02-11AC42209ND
2014-04-17AC51135ND
2014-04-17AC51137ND
2014-04-17AC51038ND
2014-04-17AC51037ND
2014-04-17AC51035ND
2014-04-17AC51036ND
2014-09-16AC67133ND
2014-09-16AC67130ND
2014-09-16AC67131ND
2014-09-16AC67132ND
2014-12-19AC75617ND
2014-12-19AC75613ND
2014-12-19AC75634ND
2014-12-19AC75622ND
2015-02-26AC82086ND
2015-02-26AC82062ND
2015-02-26AC82065ND
2015-02-26AC82056ND
2015-04-09AC87828ND
2015-04-09AC87827ND
2015-04-09AC87825ND
2015-04-09AC87834ND
2015-09-02AD05298ND
2015-09-02AD05317ND
2015-09-02AD05291ND
2015-09-02AD05318ND
2015-11-19AD14188ND
2015-11-19AD14189ND
2015-11-19AD14186ND
2015-11-19AD14187ND
2016-02-23AD25005ND
2016-02-23AD25010ND
2016-02-23AD25004ND
2016-02-23AD25003ND
2016-05-18AD37207ND
2016-05-18AD37252ND
2016-05-18AD37250ND
2016-05-18AD37251ND
2016-09-27AD51367ND
2016-09-27AD51387ND
2016-09-27AD51385ND
2016-09-27AD51371ND
2016-11-21AD58803ND
2016-11-21AD58804ND
2016-11-21AD58800ND
2016-11-21AD58801ND
2017-02-21AD71329ND
2017-02-21AD71326ND
2017-02-21AD71222ND
2017-02-21AD71221ND
2017-02-21AD71220ND
2017-02-21AD71219ND
2017-05-23AD85231ND
2017-05-23AD85230ND
2017-05-23AD85229ND
2017-05-23AD85233ND
2017-05-23AD85296ND
2017-08-25AD94434ND
2017-08-25AD94436ND
2017-08-25AD94435ND
2017-08-25AD94437ND
2017-08-25AD94547ND
2017-11-07AE04045ND
2017-11-07AE04047ND
2017-11-07AE04046ND
2017-11-07AE04048ND
2017-11-07AE04146ND
2018-02-14AE13841ND
2018-02-14AE13746ND
2018-02-14AE13745ND
2018-02-14AE13754ND
2018-02-14AE13747ND
2018-05-29AE27851ND
2018-05-29AE27848ND
2018-05-29AE27857ND
2018-05-29AE27855ND
2018-07-24AE34444ND
2018-07-24AE34447ND
2018-07-24AE34443ND
2018-07-24AE34441ND
2018-10-25AE44613ND
2018-10-25AE44614ND
2018-10-25AE44615ND
2018-10-25AE44612ND
2019-01-17AE50509ND
2019-01-17AE50510ND
2019-01-17AE50514ND
2019-01-17AE50511ND
2019-04-08AE61381ND
2019-04-08AE61376ND
2019-04-08AE61379ND
2019-04-08AE61377ND
2019-07-25AE75965ND
2019-07-25AE75966ND
2019-07-25AE75964ND
2019-07-25AE75967ND
2019-11-21AE90156ND
2019-11-21AE90157ND
2019-11-21AE90155ND
2019-11-21AE90158ND