Dalapon
Guilford Water Authority
The herbicide dalapon has not been used in the U.S. since 1999. In animal studies, exposure to dalapon harms the kidneys.
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): 200 ppb
The legal limit for dalapon, established in 1992, was based on a toxicity study in laboratory animals published in 1960.
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 | 22559578.00 | ND |
| 2020-06-09 | 22559548.00 | ND |
| 2020-06-09 | 22559518.00 | ND |
| 2020-09-09 | 23136520.00 | ND |
| 2020-09-09 | 23136546.00 | ND |
| 2020-09-09 | 23136576.00 | ND |
| 2023-05-17 | 29053230.00 | ND |
| 2023-05-17 | 29053246.00 | ND |
| 2023-05-17 | 29053262.00 | ND |
| 2023-05-24 | 29053420.00 | ND |
| 2023-05-24 | 29053387.00 | ND |
| 2023-07-18 | 29651136.00 | ND |
| 2023-07-18 | 29651227.00 | ND |
| 2023-07-18 | 29651148.00 | ND |
| 2023-08-01 | 29651255.00 | ND |
| 2023-08-01 | 29651201.00 | ND |