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EWG's Tap Water Database — 2021 UPDATE

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Dalapon

CTWC - Shoreline Region-Guilford System

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

 

34

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND40ND
2015ND30ND
2016ND110ND
2017N/A00N/A
2018ND10ND
2019ND150ND

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
2014-06-12140612CWCSOC5ND
2014-09-16141015-0009SOC5ND
2014-09-163104517ND
2014-12-293162952ND
2015-06-03BJ25400SOC5ND
2015-07-27BJ63961SOC5ND
2015-10-19BK10283SOC5ND
2016-01-21BK55954SOC5ND
2016-01-21BK55943SOC5ND
2016-01-21BK55941SOC5ND
2016-01-25BK57134SOC5ND
2016-03-14BK78127SOC5ND
2016-05-04BN25256SOC5ND
2016-06-01BN44892SOC5ND
2016-06-01BN44876SOC5ND
2016-07-12BN71477SOC5ND
2016-07-19BN75782SOC5ND
2016-07-19BN75784SOC5ND
2018-07-09CA86688ND
2019-01-30SOC 200520057ND
2019-06-06SOC 200535308ND
2019-06-06SOC 200535309ND
2019-06-11SOC 200536055ND
2019-06-11SOC 200536054ND
2019-06-19SOC 200542695ND
2019-06-24SOC 200537520ND
2019-07-29SOC 200542348ND
2019-07-30SOC 200542453ND
2019-07-31SOC 200542480ND
2019-07-31SOC 200542466ND
2019-07-31SOC 200542497ND
2019-07-31SOC 200542499ND
2019-07-31SOC 200542468ND
2019-08-14SOC 200544869ND