Diquat
Victorville Water District
Diquat is a herbicide used on potato crops and aquatic weeds.
58
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 | 7 | 0 | ND |
| 2015 | ND | 19 | 0 | ND |
| 2016 | ND | 2 | 0 | ND |
| 2017 | ND | 9 | 0 | ND |
| 2018 | ND | 21 | 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 |
|---|---|---|
| 2014-07-16 | 3334-037-0800 | ND |
| 2014-07-16 | 3334-012-1030 | ND |
| 2014-07-17 | 3334-033-0800 | ND |
| 2014-07-17 | 3334-019-1000 | ND |
| 2014-07-17 | 3334-018-0900 | ND |
| 2014-07-22 | 3334-039-1130 | ND |
| 2014-07-22 | 3334-038-1030 | ND |
| 2015-07-21 | 3334-017-1000 | ND |
| 2015-07-22 | 3334-014-1110 | ND |
| 2015-07-22 | 3334-015-1018 | ND |
| 2015-07-22 | 3334-016-0945 | ND |
| 2015-07-22 | 3334-028-0845 | ND |
| 2015-07-29 | 3334-020-0830 | ND |
| 2015-07-29 | 3334-031-0800 | ND |
| 2015-07-29 | 3334-051-0730 | ND |
| 2015-07-29 | 3334-025-0930 | ND |
| 2015-08-05 | 3334-030-0900 | ND |
| 2015-08-25 | 3334-044-0900 | ND |
| 2015-08-25 | 3334-032-1100 | ND |
| 2015-08-25 | 3334-057-1000 | ND |
| 2015-10-14 | 3334-024-1000 | ND |
| 2015-10-14 | 3334-007-0700 | ND |
| 2015-10-14 | 3334-026-0900 | ND |
| 2015-10-21 | 3334-034-0745 | ND |
| 2015-10-21 | 3334-052-1100 | ND |
| 2015-10-28 | 3334-047-0900 | ND |
| 2016-07-20 | 3334-048-0730 | ND |
| 2016-07-20 | 3334-023-0700 | ND |
| 2017-07-03 | 3334-046-1123 | ND |
| 2017-07-03 | 3334-049-1220 | ND |
| 2017-07-03 | 3334-033-1255 | ND |
| 2017-07-05 | 3334-061-1030 | ND |
| 2017-07-11 | 3334-037-1125 | ND |
| 2017-07-11 | 3334-019-1200 | ND |
| 2017-07-18 | 3334-038-0830 | ND |
| 2017-07-19 | 3334-039-1130 | ND |
| 2017-07-19 | 3334-012-0830 | ND |
| 2018-06-25 | 9590-048-1000 | ND |
| 2018-06-25 | 9590-051-1000 | ND |
| 2018-07-09 | 9590-015-0930 | ND |
| 2018-07-09 | 9590-016-0930 | ND |
| 2018-07-15 | 9590-035-1130 | ND |
| 2018-07-16 | 9590-023-0900 | ND |
| 2018-07-21 | 9590-031-1230 | ND |
| 2018-07-22 | 9590-020-1230 | ND |
| 2018-07-23 | 9590-025-1150 | ND |
| 2018-07-23 | 9590-030-1345 | ND |
| 2018-07-30 | 9590-017-1300 | ND |
| 2018-07-30 | 9590-014-1130 | ND |
| 2018-08-20 | 3761-032-1000 | ND |
| 2018-08-27 | 3761-027-1100 | ND |
| 2018-09-04 | 3761-044-1400 | ND |
| 2018-09-10 | 3761-057-0930 | ND |
| 2018-10-02 | 3761-034-1100 | ND |
| 2018-10-03 | 3761-052-1430 | ND |
| 2018-10-08 | 3761-029-0940 | ND |
| 2018-10-09 | 3761-007-1345 | ND |
| 2018-10-19 | 3761-047-1100 | ND |