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EWG's Tap Water Database — 2019 UPDATE

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Dalapon

City of Rockport

NOTE: City of Rockport purchases water from San Patricio Municipal Water District which is required to test for dalapon. Sample information shown below was taken by San Patricio Municipal Water District.

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

 

7

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND40ND
2013ND160ND
2014ND160ND
2015ND160ND
2016ND160ND
2017ND160ND

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

NOTE: City of Rockport purchases water from San Patricio Municipal Water District which is required to test for dalapon. Sample information shown below was taken by San Patricio Municipal Water District.

Date Lab ID Result
2013-06-13AC22121ND
2013-06-13AC22078ND
2014-06-16AC56879ND
2015-09-10AD06539ND
2016-03-16AD29176ND
2016-06-01AD38963ND
2017-05-24AD85467ND