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EWG's Tap Water Database — 2021 UPDATE

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Dalapon

City of Morgan Hill

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

 

41

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014ND80ND
2015ND20ND
2016ND120ND
2017ND60ND
2018ND10ND
2019ND120ND

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
2014-05-125810-032-0920ND
2014-05-125810-017-1015ND
2014-05-285810-012-0930ND
2014-06-235810-010-0815ND
2014-09-105810-032-1020ND
2014-09-105810-017-0950ND
2014-09-105810-010-0920ND
2014-09-105810-012-0845ND
2015-05-185810-002-0900ND
2015-07-211610-001-1010ND
2016-05-091610-008-0815ND
2016-05-091610-009-0900ND
2016-05-091610-016-0730ND
2016-05-091610-015-0930ND
2016-05-161610-043-0740ND
2016-05-161610-040-0830ND
2016-08-221610-015-1000ND
2016-08-221610-016-0900ND
2016-08-221610-009-0930ND
2016-08-221610-008-0830ND
2016-08-221610-040-0800ND
2016-08-221610-043-0730ND
2017-05-081610-017-0900ND
2017-05-081610-032-0800ND
2017-05-221610-012-0720ND
2017-08-141610-012-0900ND
2017-08-141610-017-0830ND
2017-08-141610-032-0800ND
2018-12-111644-001-0730ND
2019-05-071644-040-0715ND
2019-05-071644-043-0630ND
2019-05-071644-016-0930ND
2019-05-071644-015-0830ND
2019-05-071644-009-0800ND
2019-05-071644-008-1000ND
2019-09-101610-040-1000ND
2019-09-101610-043-0940ND
2019-09-101610-016-0900ND
2019-09-101610-015-0800ND
2019-09-101610-009-0730ND
2019-09-101610-008-0830ND