Dalapon
Sjra The Woodlands
The herbicide dalapon has not been used in the U.S. since 1999. In animal studies, exposure to dalapon harms the kidneys.
18
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 | N/A | 0 | 0 | N/A |
| 2016 | 0.589 ppb | 9 | 4 | ND - 1.40 ppb |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | ND | 9 | 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 |
|---|---|---|
| 2016-05-03 | AD35023 | ND |
| 2016-05-03 | AD35184 | ND |
| 2016-05-03 | AD35188 | 1.10 ppb |
| 2016-05-03 | AD35186 | 1.40 ppb |
| 2016-05-03 | AD35195 | 1.40 ppb |
| 2016-05-03 | AD35183 | ND |
| 2016-05-03 | AD35185 | ND |
| 2016-05-03 | AD35191 | 1.40 ppb |
| 2016-11-02 | AD56538 | ND |
| 2019-03-21 | AE59568 | ND |
| 2019-03-21 | AE59560 | ND |
| 2019-03-21 | AE59564 | ND |
| 2019-03-21 | AE59571 | ND |
| 2019-03-21 | AE59557 | ND |
| 2019-03-21 | AE59563 | ND |
| 2019-03-21 | AE59562 | ND |
| 2019-03-21 | AE59561 | ND |
| 2019-08-19 | AE79234 | ND |