Dalapon
Walsenburg, City of
The herbicide dalapon has not been used in the U.S. since 1999. In animal studies, exposure to dalapon harms the kidneys.
7
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 | 1.000 ppb | 1 | 1 | 1.000 ppb |
| 2016 | 1.000 ppb | 1 | 1 | 1.000 ppb |
| 2017 | ND | 1 | 0 | ND |
| 2018 | ND | 1 | 0 | ND |
| 2019 | 2.33 ppb | 3 | 3 | 1.30 ppb - 4.30 ppb |
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 |
|---|---|
| 2015-08-19 | 1.000 ppb |
| 2016-07-13 | 1.000 ppb |
| 2017-07-19 | ND |
| 2018-08-01 | ND |
| 2019-06-19 | 4.30 ppb |
| 2019-07-17 | 1.40 ppb |
| 2019-07-17 | 1.30 ppb |