Dalapon
Port Buena Vista
The herbicide dalapon has not been used in the U.S. since 1999. In animal studies, exposure to dalapon harms the kidneys.
9
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 | 1.20 ppb | 4 | 2 | ND - 2.60 ppb |
| 2017 | 5.00 ppb | 1 | 1 | 5.00 ppb |
| 2018 | 2.70 ppb | 2 | 1 | ND - 5.40 ppb |
| 2019 | 2.75 ppb | 2 | 1 | ND - 5.50 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 |
|---|---|
| 2016-03-31 | ND |
| 2016-06-30 | ND |
| 2016-09-30 | 2.60 ppb |
| 2016-10-04 | 2.20 ppb |
| 2017-03-23 | 5.00 ppb |
| 2018-03-21 | ND |
| 2018-12-11 | 5.40 ppb |
| 2019-03-27 | 5.50 ppb |
| 2019-09-30 | ND |