Diquat
Deming Municipal Water System
Diquat is a herbicide used on potato crops and aquatic weeds.
29
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 | ND | 15 | 0 | ND |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | ND | 11 | 0 | ND |
| 2018 | ND | 3 | 0 | ND |
| 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 |
|---|---|---|
| 2014-03-19 | 1403923-005A | ND |
| 2014-06-25 | 1406D27-001A | ND |
| 2014-08-14 | 1408956-005A | ND |
| 2014-08-14 | 1408951-005A | ND |
| 2014-08-14 | 1408958-005A | ND |
| 2014-08-14 | 1408955-005A | ND |
| 2014-08-14 | 1408942-005A | ND |
| 2014-08-14 | 1408944-005A | ND |
| 2014-08-14 | 1408946-005A | ND |
| 2014-08-14 | 1408949-005A | ND |
| 2014-09-10 | 1409598-005A | ND |
| 2014-09-10 | 1409600-005A | ND |
| 2014-09-10 | 1409601-005A | ND |
| 2014-10-28 | 1410E14-001A | ND |
| 2014-12-08 | 1412554-005A | ND |
| 2017-05-15 | 1705978-005 | ND |
| 2017-05-15 | 1705979-005 | ND |
| 2017-05-15 | 1705975-005 | ND |
| 2017-05-15 | 1705976-005 | ND |
| 2017-05-16 | 1705980-005 | ND |
| 2017-05-16 | 1705981-005 | ND |
| 2017-05-16 | 1705982-005 | ND |
| 2017-05-16 | 1705983-005 | ND |
| 2017-08-15 | 1708A78-005 | ND |
| 2017-09-27 | 1709H63-005 | ND |
| 2017-10-17 | 1710A61-001 | ND |
| 2018-05-08 | 1805594-005 | ND |
| 2018-05-08 | 1805596-001 | ND |
| 2018-05-08 | 1805597-001 | ND |