Know Your Environment. Protect Your Health.

Diquat

Germantown

NOTE: Germantown purchases water from Breese which is required to test for diquat. Sample information shown below was taken by Breese.

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

 

6

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019ND10ND
2020ND10ND
2021ND10ND
2022ND10ND
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

NOTE: Germantown purchases water from Breese which is required to test for diquat. Sample information shown below was taken by Breese.

Date Lab ID Result
2018-04-128042654-01ND
2019-04-099042429-01ND
2020-04-130042460-01ND
2021-04-15ED03365-01ND
2022-04-27FD04969-01ND
2023-06-21GF04162-01ND