Know Your Environment. Protect Your Health.

Diquat

Avion Water Company - Greater Avion

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
2018N/A00N/A
2019ND80ND
2020N/A00N/A
2021ND120ND
2022N/A00N/A
2023ND10ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

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
2019-02-201911473-SND
2019-03-261920362-SND
2019-04-091924429-SND
2019-04-251929191-SND
2019-05-091932771-SND
2019-09-111966990-SND
2019-09-121967778-SND
2019-10-141976522-SND
2021-05-182133902-SND
2021-05-182133881-SND
2021-05-242135371-SND
2021-05-242135368-SND
2021-05-252135557-SND
2021-05-252135558-SND
2021-07-282153636-SND
2021-07-282153633-SND
2021-07-292153951-SND
2021-08-302162787-SND
2021-08-302162790-SND
2021-09-212169292-SND
2023-05-1623-28420-SND