Diquat
Camp Pendleton (North)
Diquat is a herbicide used on potato crops and aquatic weeds.
17
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 |
|---|---|---|---|---|
| 2014 | N/A | 0 | 0 | N/A |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | ND | 4 | 0 | ND |
| 2018 | ND | 8 | 0 | ND |
| 2019 | ND | 5 | 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 |
|---|---|---|
| 2017-05-03 | 9590-002-1130 | ND |
| 2017-05-03 | 9590-003-1230 | ND |
| 2017-11-16 | 9590-002-1145 | ND |
| 2017-11-16 | 9590-003-1230 | ND |
| 2018-02-01 | 9590-008-1145 | ND |
| 2018-02-02 | 9590-006-1040 | ND |
| 2018-02-05 | 9590-009-1130 | ND |
| 2018-04-13 | 9590-002-1110 | ND |
| 2018-04-23 | 9590-003-1215 | ND |
| 2018-08-02 | 9590-008-1345 | ND |
| 2018-08-06 | 9590-006-1135 | ND |
| 2018-08-09 | 9590-009-1346 | ND |
| 2019-02-08 | 9590-006-0900 | ND |
| 2019-02-08 | 9590-008-1015 | ND |
| 2019-02-11 | 9590-009-1146 | ND |
| 2019-05-24 | 9590-002-1130 | ND |
| 2019-05-29 | 9590-003-1130 | ND |