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EWG's Tap Water Database — 2019 UPDATE

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Diquat

North Las Vegas Utilities

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

 

21

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND90ND
2013ND30ND
2014ND60ND
2015ND30ND
2016N/A00N/A
2017N/A00N/A

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 6 ppb

The EWG 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.

EPA Maximum Contaminant
Level (MCL) 20 ppb

The legal limit for diquat, established in 1992, was based on a toxicity study in laboratory animals conducted in the 1980s.

ppb = parts per billion

All test results

Date Lab ID Result
2012-03-2812030534-001ND
2012-05-2312050556-001ND
2012-06-1912060405-002ND
2012-06-2712060583-001ND
2012-09-1312090216-001ND
2012-09-1812090321-002ND
2012-09-1812090321-001ND
2012-09-2612090472-001ND
2012-12-2612120416-001ND
2013-03-0713030080-001ND
2013-10-1613100247-001ND
2013-10-1613100247-002ND
2014-02-1114020154-001ND
2014-06-2514060515-001ND
2014-07-3114070542-001ND
2014-08-2014080323-001ND
2014-09-2414090437-001ND
2014-10-2214100391-003ND
2015-06-1715060305-001ND
2015-07-1515070291-002ND
2015-07-1515070291-001ND