Diquat
Fort Wayne - 3 Rivers Filtration Plant
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 | 5 | 0 | ND |
| 2015 | ND | 5 | 0 | ND |
| 2016 | ND | 3 | 0 | ND |
| 2017 | ND | 5 | 0 | ND |
| 2018 | ND | 3 | 0 | ND |
| 2019 | ND | 4 | 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 |
|---|---|---|
| 2014-02-11 | 311534RS28-1401 | ND |
| 2014-05-13 | 317428RS28-1402 | ND |
| 2014-08-12 | 323087RS-1403 | ND |
| 2014-08-12 | 323087RS28-1403 | ND |
| 2014-11-12 | 328984RS28-1404 | ND |
| 2015-02-10 | 333846RS28-1501 | ND |
| 2015-05-12 | 3240908RS28-1502 | ND |
| 2015-08-13 | 346566RS28-1503 | ND |
| 2015-08-20 | 347225RS28-1503 | ND |
| 2015-11-10 | 352603RS28-1504 | ND |
| 2016-05-10 | 3445471RS28-1602 | ND |
| 2016-08-10 | 3519395RS28-1603 | ND |
| 2016-11-16 | 3588021RS28-1604 | ND |
| 2017-02-13 | 3637236RS28-1701 | ND |
| 2017-02-13 | 382666RS28-1701 | ND |
| 2017-05-10 | 3691990RS28-1702 | ND |
| 2017-08-17 | 395990RS28-1703 | ND |
| 2017-11-15 | 402969RS28-1704 | ND |
| 2018-05-15 | 416665RS28-1802 | ND |
| 2018-08-15 | 426216RS28-1803 | ND |
| 2018-11-13 | 436087RS28-1804 | ND |
| 2019-02-13 | 443413RS28-1901 | ND |
| 2019-05-14 | 452294RS28-1902 | ND |
| 2019-08-13 | 461756 | ND |
| 2019-11-13 | 470991RS28-1904 | ND |