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EWG's Tap Water Database — 2021 UPDATE

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Dalapon

Guymon

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

 

18

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014N/A00N/A
2015N/A00N/A
2016ND10ND
2017N/A00N/A
2018ND170ND
2019N/A00N/A

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
2016-12-19AD62643ND
2018-04-24AD25021-06ND
2018-04-24AD25021-05ND
2018-04-24AD25021-04ND
2018-04-24AD25021-03ND
2018-04-24AD25021-02ND
2018-09-18AI19044-04ND
2018-09-18AI19044-06ND
2018-09-18AI19044-05ND
2018-09-18AI19044-03ND
2018-09-18AI19044-02ND
2018-09-18AI19044-01ND
2018-10-16AJ17017-01ND
2018-10-16AJ17017-06ND
2018-10-16AJ17017-05RE1ND
2018-10-16AJ17017-04ND
2018-10-16AJ17017-03ND
2018-10-16AJ17017-02ND