Diquat
Emmaus Borough Public Water
Diquat is a herbicide used on potato crops and aquatic weeds.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2014 | ND | 8 | 0 | ND |
2015 | N/A | 0 | 0 | N/A |
2016 | N/A | 0 | 0 | N/A |
2017 | ND | 8 | 0 | ND |
2018 | N/A | 0 | 0 | N/A |
2019 | N/A | 0 | 0 | N/A |
ppb = parts per billion
State and national drinking water standards and health guidelines
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 |
---|---|---|
2014-05-27 | 140021799 | ND |
2014-05-27 | 140021800 | ND |
2014-05-27 | 140021801 | ND |
2014-05-27 | 140021802 | ND |
2014-08-28 | 140038950 | ND |
2014-08-28 | 140038951 | ND |
2014-08-28 | 140038952 | ND |
2014-08-28 | 140038953 | ND |
2017-05-24 | 16304170 | ND |
2017-05-24 | 16304172 | ND |
2017-05-24 | 16304173 | ND |
2017-05-24 | 16304171 | ND |
2017-08-31 | 16771659 | ND |
2017-08-31 | 16771660 | ND |
2017-08-31 | 16771661 | ND |
2017-08-31 | 16771662 | ND |