Know Your Environment. Protect Your Health.

Diquat

Perkasie Regional Authority

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

 

16

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
2019N/A00N/A
2020N/A00N/A
2021N/A00N/A
2022N/A00N/A
2023ND160ND

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
2023-05-0328879602.00ND
2023-05-0328879603.00ND
2023-05-0328879604.00ND
2023-05-0328879605.00ND
2023-06-0629088209.00ND
2023-06-0629088210.00ND
2023-06-0629088211.00ND
2023-06-0629088212.00ND
2023-09-0629681503.00ND
2023-09-0629681504.00ND
2023-09-0629681505.00ND
2023-09-0629681506.00ND
2023-12-1930228446.00ND
2023-12-1930228447.00ND
2023-12-1930228448.00ND
2023-12-1930228449.00ND