Dalapon
Canon City
The herbicide dalapon has not been used in the U.S. since 1999. In animal studies, exposure to dalapon harms the kidneys.
15
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 | 2 | 0 | ND |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | 1.43 ppb | 4 | 2 | ND - 3.50 ppb |
| 2018 | ND | 5 | 0 | ND |
| 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 | Result |
|---|---|
| 2014-04-14 | ND |
| 2014-10-13 | ND |
| 2017-01-11 | ND |
| 2017-04-05 | 3.50 ppb |
| 2017-07-06 | 2.20 ppb |
| 2017-10-03 | ND |
| 2018-01-09 | ND |
| 2018-04-10 | ND |
| 2018-07-05 | ND |
| 2018-11-13 | ND |
| 2018-11-13 | ND |
| 2019-01-08 | ND |
| 2019-04-02 | ND |
| 2019-07-10 | ND |
| 2019-10-08 | ND |