Dalapon
Riviera Beach Utility District
The herbicide dalapon has not been used in the U.S. since 1999. In animal studies, exposure to dalapon harms the kidneys.
19
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 | 1 | 0 | ND |
| 2015 | ND | 3 | 0 | ND |
| 2016 | 1.04 ppb | 4 | 4 | 0.890 ppb - 1.20 ppb |
| 2017 | 0.683 ppb | 6 | 1 | ND - 4.10 ppb |
| 2018 | 1.10 ppb | 3 | 2 | ND - 2.40 ppb |
| 2019 | 0.490 ppb | 2 | 2 | 0.0900 ppb - 0.890 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 |
|---|---|
| 2014-06-18 | ND |
| 2015-06-18 | ND |
| 2015-09-22 | ND |
| 2015-12-16 | ND |
| 2016-03-14 | 1.10 ppb |
| 2016-06-20 | 1.20 ppb |
| 2016-09-21 | 0.980 ppb |
| 2016-12-13 | 0.890 ppb |
| 2017-03-06 | ND |
| 2017-03-16 | ND |
| 2017-06-19 | 4.10 ppb |
| 2017-09-18 | ND |
| 2017-11-13 | ND |
| 2017-12-05 | ND |
| 2018-03-20 | ND |
| 2018-06-15 | 2.40 ppb |
| 2018-10-29 | 0.890 ppb |
| 2019-03-12 | 0.890 ppb |
| 2019-06-07 | 0.0900 ppb |