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EWG's Tap Water Database — 2021 UPDATE

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Dalapon

Lafourche Water District 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

 

46

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
201414.8 ppb64ND - 27.1 ppb
2015ND80ND
2016ND80ND
2017ND80ND
2018ND80ND
2019ND80ND

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
2014-02-03AD8868327.1 ppb
2014-02-03AD8868327.1 ppb
2014-02-24AD8929417.4 ppb
2014-02-24AD8929417.4 ppb
2014-10-06AD98270ND
2014-10-06AD98270ND
2015-03-3135181766005ND
2015-03-3135181766005ND
2015-06-0835192498004ND
2015-06-0835192498004ND
2015-09-2435208879009ND
2015-09-2435208879009ND
2015-10-1435212325002ND
2015-10-1435212325002ND
2016-03-0135232149001ND
2016-03-0135232149001ND
2016-03-1535234393005ND
2016-03-1535234393005ND
2016-11-1435277515002ND
2016-11-1435277515002ND
2016-11-2935279934001ND
2016-11-2935279934001ND
2017-01-3135292293005ND
2017-01-3135292293005ND
2017-02-1435295627001ND
2017-02-1435295627001ND
2017-10-1635342351004ND
2017-10-1635342351004ND
2017-11-0135345512001ND
2017-11-0135345512001ND
2018-01-2535370415009ND
2018-01-2535370415009ND
2018-02-2635377894001ND
2018-02-2635377894001ND
2018-07-2335406305001ND
2018-07-2335406305001ND
2018-08-2335413196001ND
2018-08-2335413196001ND
2019-01-2935445082001ND
2019-01-2935445082001ND
2019-02-1835449374001ND
2019-02-1835449374001ND
2019-07-2435484855001ND
2019-07-2435484855001ND
2019-08-2835494052001ND
2019-08-2835494052001ND