Dinoseb
Guilford Water Authority
Dinoseb is a herbicide that causes birth defects and reproductive difficulties. It has been banned in the U.S. since 1986.
20
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 |
|---|---|---|---|---|
| 2018 | ND | 3 | 0 | ND |
| 2019 | ND | 1 | 0 | ND |
| 2020 | ND | 6 | 0 | ND |
| 2021 | N/A | 0 | 0 | N/A |
| 2022 | N/A | 0 | 0 | N/A |
| 2023 | ND | 10 | 0 | ND |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
EPA Maximum Contaminant
Level (MCL): 7 ppb
The legal limit for dinoseb, established in 1992, was based on toxicity studies conducted in laboratory animals in the 1970s and 1980s.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2018-05-29 | 8055384-01 | ND |
| 2018-09-04 | 8091925-01 | ND |
| 2018-12-11 | 8122846-01 | ND |
| 2019-03-05 | 9032320-01 | ND |
| 2020-06-09 | 22559587.00 | ND |
| 2020-06-09 | 22559557.00 | ND |
| 2020-06-09 | 22559527.00 | ND |
| 2020-09-09 | 23136529.00 | ND |
| 2020-09-09 | 23136552.00 | ND |
| 2020-09-09 | 23136582.00 | ND |
| 2023-05-17 | 29053232.00 | ND |
| 2023-05-17 | 29053248.00 | ND |
| 2023-05-17 | 29053264.00 | ND |
| 2023-05-24 | 29053422.00 | ND |
| 2023-05-24 | 29053389.00 | ND |
| 2023-07-18 | 29651142.00 | ND |
| 2023-07-18 | 29651234.00 | ND |
| 2023-07-18 | 29651154.00 | ND |
| 2023-08-01 | 29651262.00 | ND |
| 2023-08-01 | 29651209.00 | ND |