Diquat
Rio Rancho Water and Waterworks Services
Diquat is a herbicide used on potato crops and aquatic weeds.
32
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 | 22 | 0 | ND |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | ND | 9 | 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 |
|---|---|---|
| 2014-02-26 | 2014006929 | ND |
| 2014-02-26 | 2014006934 | ND |
| 2014-02-26 | 2014006927 | ND |
| 2014-02-26 | 2014006930 | ND |
| 2014-02-26 | 2014006926 | ND |
| 2014-02-26 | 2014006928 | ND |
| 2014-02-26 | 2014006931 | ND |
| 2014-02-26 | 2014006933 | ND |
| 2014-02-26 | 2014006932 | ND |
| 2014-05-01 | 2014014727 | ND |
| 2014-05-01 | 2014014732 | ND |
| 2014-05-01 | 2014014730 | ND |
| 2014-05-01 | 2014014728 | ND |
| 2014-05-01 | 2014014733 | ND |
| 2014-05-01 | 2014014726 | ND |
| 2014-05-01 | 2014014731 | ND |
| 2014-05-01 | 2014014729 | ND |
| 2014-09-11 | 2014029140 | ND |
| 2014-09-11 | 2014029139 | ND |
| 2014-09-11 | 2014029138 | ND |
| 2014-10-23 | 2014033294 | ND |
| 2014-10-23 | 2014033295 | ND |
| 2017-02-08 | 2017003708 | ND |
| 2017-02-08 | 2017003709 | ND |
| 2017-02-08 | 2017003711 | ND |
| 2017-02-08 | 2017003710 | ND |
| 2017-02-08 | 2017003712 | ND |
| 2017-02-08 | 2017003713 | ND |
| 2017-02-08 | 2017003714 | ND |
| 2017-10-27 | 2017030985 | ND |
| 2017-10-27 | 2017030986 | ND |
| 2018-08-16 | 2018022997 | ND |