Know Your Environment. Protect Your Health.

Diquat

Pleasant Ridge Mobile Home Park

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

 

8

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
2019ND20ND
2020N/A00N/A
2021N/A00N/A
2022N/A00N/A
2023ND60ND

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
2019-11-051910L08-001END
2019-11-051910L08-003END
2023-02-212302G21-001GND
2023-02-212302G21-003GND
2023-03-212303232-001GND
2023-03-212303232-003GND
2023-06-152306D92-001GND
2023-06-152306D92-002GND