Diquat
City of Peoria
Diquat is a herbicide used on potato crops and aquatic weeds.
86
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 | 3 | 0 | ND |
| 2015 | ND | 9 | 0 | ND |
| 2016 | ND | 35 | 0 | ND |
| 2017 | ND | 5 | 0 | ND |
| 2018 | ND | 2 | 0 | ND |
| 2019 | ND | 32 | 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 |
|---|---|---|
| 2014-01-17 | 4011487-01S | ND |
| 2014-01-23 | 4011943-01S | ND |
| 2014-02-27 | 4022138-01S | ND |
| 2015-01-05 | 5010201-01 | ND |
| 2015-01-07 | 5010504-01 | ND |
| 2015-03-19 | 5031670-01S | ND |
| 2015-06-05 | 5060626-01 | ND |
| 2015-06-12 | 5061244-01 | ND |
| 2015-08-20 | 5081923-01 | ND |
| 2015-08-27 | 5082527-01S | ND |
| 2015-10-28 | 5102800-01S | ND |
| 2015-12-14 | 5121262-01 | ND |
| 2016-01-04 | 6010144-01S | ND |
| 2016-01-05 | 6010305-01S | ND |
| 2016-01-21 | 6011843-01S | ND |
| 2016-01-21 | 6011842-01S | ND |
| 2016-01-21 | 6011840-01S | ND |
| 2016-01-28 | 6012411-01S | ND |
| 2016-01-28 | 6012409-01S | ND |
| 2016-01-28 | 6012405-01S | ND |
| 2016-02-04 | 6020544-01S | ND |
| 2016-02-04 | 6020542-01S | ND |
| 2016-02-04 | 6020543-01S | ND |
| 2016-02-09 | 6022581-01S | ND |
| 2016-02-18 | 6021795-01S | ND |
| 2016-02-25 | 6022383-01S | ND |
| 2016-03-16 | 6031476-01 | ND |
| 2016-04-20 | 6041795-01S | ND |
| 2016-04-28 | 6042448-01S | ND |
| 2016-07-26 | 6072334-01S | ND |
| 2016-07-26 | 6072331-01S | ND |
| 2016-08-09 | 6080918-01S | ND |
| 2016-08-22 | 6082034-01S | ND |
| 2016-08-22 | 6082033-01S | ND |
| 2016-08-22 | 6082032-02 | ND |
| 2016-08-22 | 6082019-01S | ND |
| 2016-08-23 | 6082147-01S | ND |
| 2016-08-23 | 6082147-01 | ND |
| 2016-08-24 | 6082288-01I | ND |
| 2016-08-24 | 6082287-01S | ND |
| 2016-08-24 | 6082285-01S | ND |
| 2016-08-30 | 6082681-01S | ND |
| 2016-08-30 | 6082679-01S | ND |
| 2016-08-30 | 6082672-01S | ND |
| 2016-08-31 | 6082807-01 | ND |
| 2016-08-31 | 6082802-01 | ND |
| 2016-11-10 | 6111045-01S | ND |
| 2017-02-27 | 7022361-03 | ND |
| 2017-03-15 | 7031383-03S | ND |
| 2017-03-21 | 7031852-01 | ND |
| 2017-03-21 | 7031845-03 | ND |
| 2017-04-25 | 7042401-02 | ND |
| 2018-03-27 | 18C2553-01 SOC | ND |
| 2018-09-11 | 18I0989-02 | ND |
| 2019-01-17 | 19A1957-01 SOC | ND |
| 2019-01-17 | 19A1954-01 SOC | ND |
| 2019-01-29 | 19A3026-01 SOC | ND |
| 2019-01-29 | 19A3025-01 SOC | ND |
| 2019-01-30 | 19A3163-01 SOC | ND |
| 2019-01-31 | 19A3306-01 SOC | ND |
| 2019-01-31 | 19A3305-01 SOC | ND |
| 2019-02-26 | 19B2690-01 SOC | ND |
| 2019-02-26 | 19B2685-01 SOC | ND |
| 2019-02-28 | 19B2956-01 SOC | ND |
| 2019-02-28 | 19B2953-01 SOC | ND |
| 2019-03-12 | 19C1206-01 SOC | ND |
| 2019-03-28 | 19C2983-01 SOC | ND |
| 2019-06-07 | 19F0858-01 SOC | ND |
| 2019-07-18 | 19G2328-02 SOC | ND |
| 2019-07-19 | 19G2462-01 | ND |
| 2019-07-23 | 19G2771-01 | ND |
| 2019-07-23 | 19G2770-01 | ND |
| 2019-07-24 | 19G2921-01 | ND |
| 2019-07-24 | 19G2920-01 | ND |
| 2019-07-25 | 19G3062-01 | ND |
| 2019-07-25 | 19G3060-02 | ND |
| 2019-07-26 | 19G3161-01 | ND |
| 2019-07-29 | 19G3296-01 | ND |
| 2019-07-30 | 19G3448-01 | ND |
| 2019-07-30 | 19G3439-02 | ND |
| 2019-07-31 | 19G3574-01 SOC | ND |
| 2019-08-02 | 19H0194-01 | ND |
| 2019-09-06 | 19I0732-01 | ND |
| 2019-10-31 | 19J3591-01 | ND |
| 2019-12-06 | 19L0869-02 SOC | ND |
| 2019-12-11 | 19L1502-01 | ND |