Diquat
Avion Water Company - Avion
Diquat is a herbicide used on potato crops and aquatic weeds.
25
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 | 4 | 0 | ND |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | ND | 8 | 0 | ND |
| 2017 | ND | 5 | 0 | ND |
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | ND | 8 | 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 |
|---|---|---|
| 2014-06-24 | B4F241001-S | ND |
| 2014-06-24 | B4F241101-S | ND |
| 2014-09-22 | B4I220901-S | ND |
| 2014-09-23 | B4I231101-S | ND |
| 2016-02-23 | 1609186-S | ND |
| 2016-08-24 | 1650944-S | ND |
| 2016-08-25 | 1651971-S | ND |
| 2016-09-07 | 1654246-S | ND |
| 2016-09-13 | 1655622-S | ND |
| 2016-10-04 | 1660498-S | ND |
| 2016-11-09 | 1668630-S | ND |
| 2016-12-21 | 1675573-S | ND |
| 2017-06-07 | 1730377-S | ND |
| 2017-06-13 | 1731571-S | ND |
| 2017-07-31 | 1742194-S | ND |
| 2017-08-24 | 1748436-S | ND |
| 2017-08-24 | 1748431-S | ND |
| 2019-02-20 | 1911473-S | ND |
| 2019-03-26 | 1920362-S | ND |
| 2019-04-09 | 1924429-S | ND |
| 2019-04-25 | 1929191-S | ND |
| 2019-05-09 | 1932771-S | ND |
| 2019-09-11 | 1966990-S | ND |
| 2019-09-12 | 1967778-S | ND |
| 2019-10-14 | 1976522-S | ND |