Diquat
Kingman Municipal Water
Diquat is a herbicide used on potato crops and aquatic weeds.
31
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 | N/A | 0 | 0 | N/A |
| 2015 | ND | 12 | 0 | ND |
| 2016 | ND | 2 | 0 | ND |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | ND | 15 | 0 | ND |
| 2019 | ND | 2 | 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 |
|---|---|---|
| 2015-02-09 | 550-39973-1 | ND |
| 2015-02-09 | 550-39972-1 | ND |
| 2015-02-09 | 550-39970-1 | ND |
| 2015-02-17 | 550-40405-1 | ND |
| 2015-02-17 | 550-40404-1 | ND |
| 2015-02-17 | 550-40403-1 | ND |
| 2015-08-17 | 550-49709-1 | ND |
| 2015-08-17 | 550-49708-1 | ND |
| 2015-08-17 | 550-49707-1 | ND |
| 2015-08-17 | 550-49706-1 | ND |
| 2015-08-17 | 550-49705-1 | ND |
| 2015-08-17 | 550-49703-1 | ND |
| 2016-02-16 | 550-59042-1 | ND |
| 2016-07-12 | 550-66385-1S | ND |
| 2018-02-26 | 550-98566-1 SOC | ND |
| 2018-02-26 | 550-98567-1 SOC | ND |
| 2018-03-06 | 550-99028-1 SOC | ND |
| 2018-03-06 | 550-99016-1 SOC | ND |
| 2018-03-13 | 550-99583-1 SOC | ND |
| 2018-03-26 | 680-150420-1 | ND |
| 2018-03-26 | 680-150418-1 SOC | ND |
| 2018-07-17 | 550-106341-1 | ND |
| 2018-07-17 | 550-106339-1 | ND |
| 2018-07-24 | 550-106642-1 SOC | ND |
| 2018-07-24 | 550-106641-1 | ND |
| 2018-07-24 | 550-106638-1 | ND |
| 2018-07-31 | 550-107012-1 | ND |
| 2018-07-31 | 550-107010-1 | ND |
| 2018-10-08 | 550-111363-1 | ND |
| 2019-01-29 | 50-117151-1 | ND |
| 2019-07-09 | 550-125781-1 | ND |