Dalapon
City of Manassas
The herbicide dalapon has not been used in the U.S. since 1999. In animal studies, exposure to dalapon harms the kidneys.
9
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 | N/A | 0 | 0 | N/A |
| 2015 | ND | 2 | 0 | ND |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | 0.333 ppb | 3 | 1 | ND - 1.000 ppb |
| 2019 | ND | 4 | 0 | ND |
ppb = parts per billion
State and national drinking water standards and health guidelines
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 |
|---|---|---|
| 2015-09-14 | 460013-JAMES R. | ND |
| 2015-10-27 | 460013-JAMES R. | ND |
| 2018-06-11 | 18-11193-CAH | 1.000 ppb |
| 2018-09-11 | 18091228-01A | ND |
| 2018-12-17 | 18122134-01A | ND |
| 2019-03-15 | 19032076-01A | ND |
| 2019-06-07 | 19061010-02A | ND |
| 2019-09-05 | 19090768-01A | ND |
| 2019-12-17 | 7312111001-CAH | ND |