Diquat
City of Riverton
Diquat is a herbicide used on potato crops and aquatic weeds.
66
Samples
0
Samples exceeding legal limit (MCL)
0
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | ND | 14 | 0 | ND |
| 2015 | ND | 18 | 0 | ND |
| 2016 | ND | 4 | 0 | ND |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | ND | 30 | 0 | ND |
| 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 |
|---|---|---|
| 2014-07-14 | C14070510-002H | ND |
| 2014-07-14 | C14070510-001H | ND |
| 2014-07-14 | C14070510-014H | ND |
| 2014-07-14 | C14070510-013H | ND |
| 2014-07-14 | C14070510-012H | ND |
| 2014-07-14 | C14070510-011H | ND |
| 2014-07-14 | C14070510-010H | ND |
| 2014-07-14 | C14070510-009H | ND |
| 2014-07-14 | C14070510-008H | ND |
| 2014-07-14 | C14070510-007H | ND |
| 2014-07-14 | C14070510-006H | ND |
| 2014-07-14 | C14070510-005H | ND |
| 2014-07-14 | C14070510-004H | ND |
| 2014-07-14 | C14070510-003H | ND |
| 2015-04-14 | C15040475-001D | ND |
| 2015-06-25 | C15061008-002G | ND |
| 2015-06-25 | C15061008-015G | ND |
| 2015-06-25 | C15061008-014G | ND |
| 2015-06-25 | C15061008-013G | ND |
| 2015-06-25 | C15061008-012G | ND |
| 2015-06-25 | C15061008-011G | ND |
| 2015-06-25 | C15061008-010G | ND |
| 2015-06-25 | C15061008-009G | ND |
| 2015-06-25 | C15061008-008G | ND |
| 2015-06-25 | C15061008-007G | ND |
| 2015-06-25 | C15061008-006G | ND |
| 2015-06-25 | C15061008-005G | ND |
| 2015-06-25 | C15061008-004G | ND |
| 2015-06-25 | C15061008-003G | ND |
| 2015-06-25 | C15061008-001G | ND |
| 2015-08-11 | C15080418-001D | ND |
| 2015-10-26 | C15100814-001D | ND |
| 2016-03-07 | C16030282-001D | ND |
| 2016-06-13 | C16060466-016D | ND |
| 2016-09-07 | C16090266-001E | ND |
| 2016-12-12 | C16120340-001D | ND |
| 2018-06-04 | C18060169-025E | ND |
| 2018-06-04 | C18060169-023A | ND |
| 2018-06-04 | C18060169-023B | ND |
| 2018-06-04 | C18060169-023C | ND |
| 2018-06-04 | C18060169-023D | ND |
| 2018-06-04 | C18060169-023E | ND |
| 2018-06-04 | C18060169-024A | ND |
| 2018-06-04 | C18060169-024B | ND |
| 2018-06-04 | C18060169-024C | ND |
| 2018-06-04 | C18060169-024D | ND |
| 2018-06-04 | C18060169-025A | ND |
| 2018-06-04 | C18060169-025D | ND |
| 2018-06-04 | C18060169-025B | ND |
| 2018-06-04 | C18060169-024E | ND |
| 2018-06-04 | C18060169-025C | ND |
| 2018-09-04 | C18090097-003D | ND |
| 2018-09-04 | C18090097-009D | ND |
| 2018-09-04 | C18090097-013D | ND |
| 2018-09-04 | C18090097-008D | ND |
| 2018-09-04 | C18090097-010D | ND |
| 2018-09-04 | C18090097-002D | ND |
| 2018-09-04 | C18090097-005D | ND |
| 2018-09-04 | C18090097-001D | ND |
| 2018-09-04 | C18090097-012D | ND |
| 2018-09-04 | C18090097-006D | ND |
| 2018-09-04 | C18090097-004D | ND |
| 2018-09-04 | C18090097-011D | ND |
| 2018-09-04 | C18090097-007D | ND |
| 2018-09-10 | C18090339-002D | ND |
| 2018-09-10 | C18090339-001D | ND |