Dalapon
West Monroe Water System
The herbicide dalapon has not been used in the U.S. since 1999. In animal studies, exposure to dalapon harms the kidneys.
26
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 |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | 4.59 ppb | 12 | 10 | ND - 9.04 ppb |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | ND | 12 | 0 | ND |
| 2018 | ND | 2 | 0 | ND |
| 2019 | N/A | 0 | 0 | N/A |
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 |
|---|---|---|
| 2014-03-17 | AD89858 | 9.04 ppb |
| 2014-03-17 | AD89857 | 9.04 ppb |
| 2014-03-17 | AD89858 | 9.04 ppb |
| 2014-03-17 | AD89857 | 9.04 ppb |
| 2014-09-02 | AD96405 | 3.15 ppb |
| 2014-09-02 | AD96404 | 3.15 ppb |
| 2014-09-02 | AD96405 | 3.15 ppb |
| 2014-09-02 | AD96406 | 3.15 ppb |
| 2014-09-02 | AD96404 | 3.15 ppb |
| 2014-09-02 | AD96406 | 3.15 ppb |
| 2014-09-04 | AD96494 | ND |
| 2014-09-04 | AD96494 | ND |
| 2017-03-15 | 35301204006 | ND |
| 2017-03-15 | 35301204006 | ND |
| 2017-03-22 | 35302309005 | ND |
| 2017-03-22 | 35302309005 | ND |
| 2017-09-05 | 35334988002 | ND |
| 2017-09-05 | 35334988003 | ND |
| 2017-09-05 | 35334988001 | ND |
| 2017-09-05 | 35334988001 | ND |
| 2017-09-05 | 35334988002 | ND |
| 2017-09-05 | 35334988003 | ND |
| 2017-09-18 | 35337315002 | ND |
| 2017-09-18 | 35337315002 | ND |
| 2018-07-16 | 35405319001 | ND |
| 2018-07-16 | 35405319001 | ND |