Diquat
West Escambia Utilities Inc.
Diquat is a herbicide used on potato crops and aquatic weeds.
28
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 | 2 | 0 | ND |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | ND | 12 | 0 | ND |
| 2017 | ND | 2 | 0 | ND |
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | ND | 12 | 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 |
|---|---|---|
| 2014-03-20 | 140321022-1 | ND |
| 2014-06-16 | 140617019-1 | ND |
| 2016-03-24 | 160325010-2 | ND |
| 2016-03-24 | 160325010-4 | ND |
| 2016-03-24 | 160325010-1 | ND |
| 2016-03-24 | 160325010-3 | ND |
| 2016-03-24 | 160325010-5 | ND |
| 2016-06-20 | 160621027-1 | ND |
| 2016-06-20 | 160621027-5 | ND |
| 2016-06-20 | 160621027-4 | ND |
| 2016-06-20 | 160621027-2 | ND |
| 2016-06-20 | 160621027-3 | ND |
| 2016-06-20 | 160621027-6 | ND |
| 2016-09-22 | 160923021-1 | ND |
| 2017-03-21 | 170322045-1 | ND |
| 2017-06-19 | 170620031-001 | ND |
| 2019-03-18 | 19030539-002H | ND |
| 2019-03-18 | 19030539-005H | ND |
| 2019-03-18 | 19030539-001H | ND |
| 2019-03-18 | 19030539-003H | ND |
| 2019-03-18 | 19030539-004H | ND |
| 2019-03-18 | 19030539-006H | ND |
| 2019-07-22 | 20113945001_ISOC | ND |
| 2019-07-22 | 20113945002_ISOC | ND |
| 2019-07-22 | 20113945003_ISOC | ND |
| 2019-12-17 | 20135289002_ISOC | ND |
| 2019-12-17 | 20135289001_ISOC | ND |
| 2019-12-17 | 20135289003_ISOC | ND |