Diquat
Epcor Water New Mexico Inc Clovis
Diquat is a herbicide used on potato crops and aquatic weeds.
43
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 |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | ND | 19 | 0 | ND |
| 2015 | ND | 3 | 0 | ND |
| 2016 | ND | 5 | 0 | ND |
| 2017 | ND | 12 | 0 | ND |
| 2018 | N/A | 0 | 0 | N/A |
| 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 |
|---|---|---|
| 2014-05-12 | 1405632-005A | ND |
| 2014-05-12 | 1405628-005A | ND |
| 2014-05-12 | 1405645-005A | ND |
| 2014-05-12 | 1405625-005A | ND |
| 2014-05-12 | 1405622-004A | ND |
| 2014-06-17 | 1406949-005A | ND |
| 2014-06-17 | 1406948-005A | ND |
| 2014-06-17 | 1406945-005A | ND |
| 2014-06-17 | 1406947-005A | ND |
| 2014-09-02 | 1409173-001A | ND |
| 2014-09-02 | 1409175-002A | ND |
| 2014-09-02 | 1409177-001A | ND |
| 2014-09-02 | 1409180-002A | ND |
| 2014-09-02 | 1409179-002A | ND |
| 2014-09-02 | 1409178-001A | ND |
| 2014-09-17 | 1409988-001A | ND |
| 2014-09-17 | 1409899-001A | ND |
| 2014-09-17 | 1409989-005A | ND |
| 2014-10-07 | 1410484-001A | ND |
| 2015-09-21 | 1509A49-005A | ND |
| 2015-11-10 | 1511478-007A | ND |
| 2015-11-10 | 1511483-002A | ND |
| 2016-03-21 | 1603C17-003A | ND |
| 2016-03-21 | 1603C19-005A | ND |
| 2016-05-09 | 1605537-002A | ND |
| 2016-07-26 | 1607E75-001A | ND |
| 2016-10-18 | 1610A17-002 | ND |
| 2017-03-13 | 2017007277 | ND |
| 2017-03-13 | 2017007278 | ND |
| 2017-04-26 | 2017012833 | ND |
| 2017-04-26 | 2017012831 | ND |
| 2017-04-26 | 2017012832 | ND |
| 2017-06-06 | 2017016944 | ND |
| 2017-07-24 | 2017021821 | ND |
| 2017-07-24 | 2017021813 | ND |
| 2017-07-24 | 2017021820 | ND |
| 2017-10-17 | 2017030179 | ND |
| 2017-10-17 | 2017030178 | ND |
| 2017-10-17 | 2017030174 | ND |
| 2019-04-02 | 1904125-003 | ND |
| 2019-06-03 | 2019015190 | ND |
| 2019-07-15 | 2019019647 | ND |
| 2019-07-15 | 2019019648 | ND |