Diquat
Fruitridge Vista Water Company
Diquat is a herbicide used on potato crops and aquatic weeds.
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 | 29 | 0 | ND |
2018 | ND | 1 | 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 |
---|---|---|
2017-01-19 | 5810-018-1300 | ND |
2017-01-19 | 5810-014-1520 | ND |
2017-01-19 | 5810-016-1055 | ND |
2017-01-19 | 5810-013-0805 | ND |
2017-01-19 | 5810-003-1427 | ND |
2017-01-19 | 5810-010-1015 | ND |
2017-01-19 | 5810-017-0940 | ND |
2017-01-19 | 5810-009-1126 | ND |
2017-01-19 | 5810-008-0730 | ND |
2017-01-19 | 5810-007-1235 | ND |
2017-01-19 | 5810-005-1345 | ND |
2017-01-19 | 5810-020-0838 | ND |
2017-01-19 | 5810-004-1453 | ND |
2017-01-23 | 5810-006-1012 | ND |
2017-01-23 | 5810-019-1105 | ND |
2017-04-13 | 5810-010-0955 | ND |
2017-04-13 | 5810-017-0920 | ND |
2017-04-13 | 5810-018-1205 | ND |
2017-04-13 | 5810-020-0840 | ND |
2017-04-13 | 5810-014-1348 | ND |
2017-04-13 | 5810-013-0800 | ND |
2017-04-13 | 5810-009-1035 | ND |
2017-04-13 | 5810-008-0720 | ND |
2017-04-13 | 5810-007-1145 | ND |
2017-04-13 | 5810-006-1426 | ND |
2017-04-13 | 5810-005-1226 | ND |
2017-04-13 | 5810-004-1330 | ND |
2017-04-13 | 5810-003-1310 | ND |
2017-07-13 | 5810-019-1327 | ND |
2018-01-11 | 5810-016-0955 | ND |