Diquat
Yuma Lakes Resort
Diquat is a herbicide used on potato crops and aquatic weeds.
12
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 | 12 | 0 | ND |
| 2018 | N/A | 0 | 0 | N/A |
| 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 |
|---|---|---|
| 2017-02-01 | 201702020177AS | ND |
| 2017-02-01 | 201702020177BS | ND |
| 2017-02-01 | 201702020177CS | ND |
| 2017-04-12 | 201704130602AS | ND |
| 2017-04-12 | 201704130602BS | ND |
| 2017-04-12 | 201704130602CS | ND |
| 2017-07-19 | 201707200496BS | ND |
| 2017-07-19 | 201707200496CS | ND |
| 2017-07-19 | 201707200496DS | ND |
| 2017-11-09 | 201711100053SA | ND |
| 2017-11-09 | 201711100053SB | ND |
| 2017-11-09 | 201711100053SC | ND |