Menu

EWG's Tap Water Database

Donate

Diquat

East Cherry Creek Valley Water and Sanitation District

Diquat is a herbicide used on potato crops and aquatic weeds.

 

42

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2010N/A00N/A
2011ND220ND
2012ND20ND
2013ND20ND
2014N/A00N/A
2015ND160ND

ppb = parts per billion.

State and national drinking water standards and health guidelines

Health Guideline 6 ppb

The health guideline of 6 ppb for diquat was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cataracts.

ppb = parts per billion.

EPA Maximum Contaminant
Level (MCL) 20 ppb

The enforceable federal standard that defines the highest level of a contaminant allowed in drinking water.

ppb = parts per billion.

EPA Maximum Contaminant
Level Goal (MCLG)20.0 ppb

A non-enforceable federal health guideline. For cancer-causing chemicals, these health goals are typically set to zero.

ppb = parts per billion.

All test results

Date Result
2011-05-18ND
2011-05-18ND
2011-06-08ND
2011-06-08ND
2011-06-09ND
2011-06-09ND
2011-06-21ND
2011-06-21ND
2011-06-21ND
2011-06-22ND
2011-06-22ND
2011-10-13ND
2011-10-13ND
2011-10-13ND
2011-10-17ND
2011-10-17ND
2011-10-17ND
2011-10-17ND
2011-10-18ND
2011-10-18ND
2011-10-19ND
2011-10-19ND
2012-07-13ND
2012-10-25ND
2013-06-07ND
2013-12-05ND
2015-03-17ND
2015-03-17ND
2015-03-17ND
2015-03-17ND
2015-03-18ND
2015-03-18ND
2015-03-18ND
2015-06-08ND
2015-06-08ND
2015-06-08ND
2015-06-08ND
2015-06-23ND
2015-06-23ND
2015-06-23ND
2015-06-23ND
2015-09-29ND