Know Your Environment. Protect Your Health.

Diquat

East Cocalico Township

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

 

42

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
2020ND220ND
2021N/A00N/A
2022N/A00N/A
2023ND200ND

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
2020-05-0122369333.00ND
2020-05-0122369477.00ND
2020-05-0122369448.00ND
2020-05-0122369420.00ND
2020-05-0122369391.00ND
2020-05-0122369362.00ND
2020-05-0122369304.00ND
2020-05-0122369275.00ND
2020-05-0122369246.00ND
2020-05-0122369217.00ND
2020-05-0122369188.00ND
2020-07-3122956384.00ND
2020-07-3122956325.00ND
2020-07-3122956181.00ND
2020-07-3122956297.00ND
2020-07-3122956355.00ND
2020-07-3122956268.00ND
2020-07-3122956152.00ND
2020-07-3122956239.00ND
2020-07-3122956123.00ND
2020-07-3122956209.00ND
2020-07-3122956413.00ND
2023-05-3029261559.00ND
2023-05-3029261564.00ND
2023-05-3029261565.00ND
2023-05-3029261563.00ND
2023-05-3029261558.00ND
2023-05-3029261562.00ND
2023-05-3029261567.00ND
2023-05-3029261566.00ND
2023-05-3029261561.00ND
2023-05-3029261560.00ND
2023-09-1329847316.00ND
2023-09-1329847321.00ND
2023-09-1329847317.00ND
2023-09-1329847315.00ND
2023-09-1329847320.00ND
2023-09-1329847318.00ND
2023-09-1329847314.00ND
2023-09-1329847319.00ND
2023-09-1329847322.00ND
2023-09-1329847313.00ND