Dalapon
City of Tomball
The herbicide dalapon has not been used in the U.S. since 1999. In animal studies, exposure to dalapon harms the kidneys.
16
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 | ND | 4 | 0 | ND |
| 2015 | ND | 2 | 0 | ND |
| 2016 | ND | 2 | 0 | ND |
| 2017 | ND | 4 | 0 | ND |
| 2018 | ND | 2 | 0 | ND |
| 2019 | ND | 2 | 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 |
|---|---|---|
| 2014-01-13 | AC38615 | ND |
| 2014-01-13 | AC38609 | ND |
| 2014-05-12 | AC53900 | ND |
| 2014-05-12 | AC53862 | ND |
| 2015-06-25 | AC97551 | ND |
| 2015-06-25 | AC97522 | ND |
| 2016-09-12 | AD49036 | ND |
| 2016-09-12 | AD49034 | ND |
| 2017-02-02 | AD68484 | ND |
| 2017-02-02 | AD68485 | ND |
| 2017-05-12 | AD84187 | ND |
| 2017-05-12 | AD84158 | ND |
| 2018-06-06 | AE28791 | ND |
| 2018-06-06 | AE28792 | ND |
| 2019-05-16 | AE66800 | ND |
| 2019-05-16 | AE66799 | ND |