Diquat
Elsinore Valley Municipal Water District
Diquat is a herbicide used on potato crops and aquatic weeds.
49
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 | N/A | 0 | 0 | N/A |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | ND | 19 | 0 | ND |
| 2017 | ND | 2 | 0 | ND |
| 2018 | ND | 2 | 0 | ND |
| 2019 | ND | 26 | 0 | ND |
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 |
|---|---|---|
| 2016-02-03 | 3334-050-1130 | ND |
| 2016-02-03 | 3334-049-1315 | ND |
| 2016-05-26 | 3334-052-1030 | ND |
| 2016-08-11 | 3334-010-1110 | ND |
| 2016-08-11 | 3334-037-1220 | ND |
| 2016-08-17 | 3334-022-1320 | ND |
| 2016-08-17 | 3334-031-1150 | ND |
| 2016-08-17 | 3334-012-1240 | ND |
| 2016-08-25 | 3334-007-1040 | ND |
| 2016-08-25 | 3334-053-0910 | ND |
| 2016-08-25 | 3334-004-1505 | ND |
| 2016-11-09 | 3334-010-1000 | ND |
| 2016-11-09 | 3334-031-1100 | ND |
| 2016-11-09 | 3334-012-1135 | ND |
| 2016-11-17 | 3334-038-1500 | ND |
| 2016-11-17 | 3334-002-1412 | ND |
| 2016-11-17 | 3334-007-1508 | ND |
| 2016-11-18 | 3334-053-0830 | ND |
| 2016-11-23 | 3334-037-1300 | ND |
| 2017-04-12 | 9590-052-1345 | ND |
| 2017-04-28 | 9590-002-1310 | ND |
| 2018-07-26 | 3334-049-1328 | ND |
| 2018-07-26 | 3334-050-1348 | ND |
| 2019-01-09 | 3334-012-1350 | ND |
| 2019-01-24 | 3334-053-0900 | ND |
| 2019-03-27 | 3334-038-1008 | ND |
| 2019-06-07 | 3334-052-1045 | ND |
| 2019-06-11 | 3334-053-1110 | ND |
| 2019-06-13 | 3334-012-0938 | ND |
| 2019-06-18 | 3334-037-1128 | ND |
| 2019-06-20 | 3334-031-1112 | ND |
| 2019-06-25 | 3334-021-1245 | ND |
| 2019-06-25 | 3334-049-1200 | ND |
| 2019-06-25 | 3334-022-1148 | ND |
| 2019-06-25 | 3334-050-1230 | ND |
| 2019-08-20 | 3334-050-1022 | ND |
| 2019-08-20 | 3334-049-1055 | ND |
| 2019-09-05 | 3334-007-1110 | ND |
| 2019-09-10 | 3334-053-1022 | ND |
| 2019-09-11 | 3334-022-1355 | ND |
| 2019-09-12 | 3334-021-1200 | ND |
| 2019-09-12 | 3334-038-1545 | ND |
| 2019-09-18 | 3334-031-1430 | ND |
| 2019-09-18 | 3334-037-1311 | ND |
| 2019-10-10 | 3334-002-0930 | ND |
| 2019-11-06 | 9590-007-0926 | ND |
| 2019-11-12 | 3334-004-1255 | ND |
| 2019-12-12 | 3334-007-1034 | ND |
| 2019-12-17 | 3334-010-1306 | ND |