Dalapon
City of Port St. Joe
The herbicide dalapon has not been used in the U.S. since 1999. In animal studies, exposure to dalapon harms the kidneys.
10
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 | 0.367 ppb | 3 | 1 | ND - 1.10 ppb |
| 2015 | 0.800 ppb | 2 | 1 | ND - 1.60 ppb |
| 2016 | ND | 1 | 0 | ND |
| 2017 | ND | 2 | 0 | ND |
| 2018 | 1.70 ppb | 1 | 1 | 1.70 ppb |
| 2019 | 1.30 ppb | 1 | 1 | 1.30 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 |
|---|---|
| 2014-06-11 | ND |
| 2014-08-27 | ND |
| 2014-10-08 | 1.10 ppb |
| 2015-06-10 | 1.60 ppb |
| 2015-10-14 | ND |
| 2016-10-20 | ND |
| 2017-05-10 | ND |
| 2017-10-11 | ND |
| 2018-10-03 | 1.70 ppb |
| 2019-10-17 | 1.30 ppb |