Diquat
South Alabama Utilities Water System
Diquat is a herbicide used on potato crops and aquatic weeds.
76
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 | 3 | 0 | ND |
| 2015 | ND | 20 | 0 | ND |
| 2016 | ND | 14 | 0 | ND |
| 2017 | ND | 2 | 0 | ND |
| 2018 | ND | 22 | 0 | ND |
| 2019 | ND | 15 | 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 |
|---|---|---|
| 2014-02-18 | 140219048-1 | ND |
| 2014-02-18 | 140219048-2 | ND |
| 2014-04-23 | 140424029-1 | ND |
| 2015-01-26 | 150270017-1 | ND |
| 2015-01-26 | 150270017-2 | ND |
| 2015-01-26 | 150270017-3 | ND |
| 2015-05-28 | 150529010-3 | ND |
| 2015-05-28 | 150529010-1 | ND |
| 2015-05-28 | 150529004-2 | ND |
| 2015-05-28 | 150529010-5 | ND |
| 2015-05-28 | 150529010-2 | ND |
| 2015-05-28 | 150529010-4 | ND |
| 2015-05-28 | 150529004-4 | ND |
| 2015-05-28 | 150529004-1 | ND |
| 2015-05-28 | 150529004-3 | ND |
| 2015-12-09 | 151210004-2 | ND |
| 2015-12-09 | 151210002-2 | ND |
| 2015-12-09 | 151210002-1 | ND |
| 2015-12-09 | 151210004-6 | ND |
| 2015-12-09 | 151210004-5 | ND |
| 2015-12-09 | 151210004-4 | ND |
| 2015-12-09 | 151210004-3 | ND |
| 2015-12-09 | 151210004-1 | ND |
| 2016-02-16 | 160217079-4 | ND |
| 2016-02-16 | 160217079-3 | ND |
| 2016-02-16 | 160217079-2 | ND |
| 2016-02-16 | 160217079-1 | ND |
| 2016-02-16 | 160217079-6 | ND |
| 2016-02-16 | 160217079-5 | ND |
| 2016-02-18 | 160219016-1 | ND |
| 2016-06-02 | 160602083-6 | ND |
| 2016-06-02 | 160602083-2 | ND |
| 2016-06-02 | 160602083-5 | ND |
| 2016-06-02 | 160602083-1 | ND |
| 2016-06-02 | 160602083-3 | ND |
| 2016-06-02 | 160602083-4 | ND |
| 2016-06-02 | 160602087-1 | ND |
| 2017-02-27 | 170228004-1 | ND |
| 2017-06-01 | 170602037-1 | ND |
| 2018-01-31 | 180210046-1 | ND |
| 2018-01-31 | 180201046-2 | ND |
| 2018-01-31 | 180210046-2 | ND |
| 2018-01-31 | 180201046-1 | ND |
| 2018-03-23 | 180326015-1 | ND |
| 2018-03-23 | 180326015-7 | ND |
| 2018-03-23 | 180326015-5 | ND |
| 2018-03-23 | 180326015-4 | ND |
| 2018-03-23 | 180326015-6 | ND |
| 2018-03-23 | 180326015-3 | ND |
| 2018-03-23 | 180326015-2 | ND |
| 2018-07-23 | 180724033-001 | ND |
| 2018-07-23 | 180724033-002 | ND |
| 2018-07-31 | 18080026-002 | ND |
| 2018-07-31 | 18080026-003 | ND |
| 2018-07-31 | 18080026-001 | ND |
| 2018-09-24 | 18090663-002H | ND |
| 2018-09-24 | 18090663-001H | ND |
| 2018-09-24 | 18090663-003H | ND |
| 2018-09-24 | 18090663-004H | ND |
| 2018-09-24 | 18090663-005H | ND |
| 2018-10-30 | 18100655-001H | ND |
| 2019-01-09 | 19010305-006H | ND |
| 2019-01-09 | 19010305-005H | ND |
| 2019-01-09 | 19010305-002H | ND |
| 2019-01-09 | 19010305-004H | ND |
| 2019-01-09 | 19010305-001H | ND |
| 2019-01-09 | 19010305-003H | ND |
| 2019-01-28 | 19010680-001H | ND |
| 2019-08-01 | 20115315006_ISOC | ND |
| 2019-08-01 | 20115315005_ISOC | ND |
| 2019-08-01 | 20115315004_ISOC | ND |
| 2019-08-01 | 20115315003_ISOC | ND |
| 2019-08-01 | 20115315002_ISOC | ND |
| 2019-08-01 | 20115315001_ISOC | ND |
| 2019-09-23 | 20122690001_ISOC | ND |
| 2019-11-18 | 20131103001_ISOC | ND |