Diquat
Miami
Diquat is a herbicide used on potato crops and aquatic weeds.
32
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 | N/A | 0 | 0 | N/A |
| 2018 | ND | 16 | 0 | ND |
| 2019 | ND | 16 | 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 |
|---|---|---|
| 2018-03-27 | AC27059-04 | ND |
| 2018-03-27 | AC27059-03 | ND |
| 2018-03-27 | AC27059-02 | ND |
| 2018-03-27 | AC27059-01 | ND |
| 2018-04-11 | AD11101-04 | ND |
| 2018-04-11 | AD11101-03 | ND |
| 2018-04-11 | AD11101-02 | ND |
| 2018-04-11 | AD11101-01 | ND |
| 2018-08-27 | AH27031-04 | ND |
| 2018-08-27 | AH27031-03 | ND |
| 2018-08-27 | AH27031-02 | ND |
| 2018-08-27 | AH27031-01 | ND |
| 2018-10-15 | AJ15039-01 | ND |
| 2018-10-15 | AJ15039-04 | ND |
| 2018-10-15 | AJ15039-03 | ND |
| 2018-10-15 | AJ15039-02 | ND |
| 2019-01-17 | BA17065-04 | ND |
| 2019-01-17 | BA17065-03 | ND |
| 2019-01-17 | BA17065-02 | ND |
| 2019-01-17 | BA17065-01 | ND |
| 2019-04-15 | BD15046-04 | ND |
| 2019-04-15 | BD15046-03 | ND |
| 2019-04-15 | BD15046-02 | ND |
| 2019-04-15 | BD15046-01 | ND |
| 2019-08-19 | BH19055-04 | ND |
| 2019-08-19 | BH19055-03 | ND |
| 2019-08-19 | BH19055-02 | ND |
| 2019-08-19 | BH19055-01 | ND |
| 2019-10-14 | BJ15010-01 | ND |
| 2019-10-14 | BJ15010-04 | ND |
| 2019-10-14 | BJ15010-03 | ND |
| 2019-10-14 | BJ15010-02 | ND |