Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Dalapon

City of Watsonville

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

 

28

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
2016ND280ND
2017N/A00N/A
2018N/A00N/A
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
2016-03-159590-016-1120ND
2016-03-159590-014-1120ND
2016-03-159590-013-0915ND
2016-03-159590-012-1015ND
2016-03-159590-015-1050ND
2016-03-159590-011-1205ND
2016-03-159590-010-0950ND
2016-03-159590-009-1015ND
2016-03-159590-007-1145ND
2016-03-159590-029-1050ND
2016-03-159590-006-0930ND
2016-03-159590-030-0830ND
2016-06-149590-016-1020ND
2016-06-149590-030-1020ND
2016-06-149590-015-1300ND
2016-06-149590-029-1000ND
2016-06-149590-014-0850ND
2016-06-149590-004-1210ND
2016-06-149590-013-0840ND
2016-06-149590-012-1220ND
2016-06-149590-011-1315ND
2016-06-149590-010-0950ND
2016-06-149590-009-1050ND
2016-06-149590-007-1045ND
2016-06-149590-006-0910ND
2016-06-209590-005-1510ND
2016-09-139590-005-1440ND
2016-09-139590-004-1400ND