Dalapon
Chowan County Water System
The herbicide dalapon has not been used in the U.S. since 1999. In animal studies, exposure to dalapon harms the kidneys.
13
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 | ND | 2 | 0 | ND |
| 2015 | ND | 1 | 0 | ND |
| 2016 | ND | 1 | 0 | ND |
| 2017 | ND | 2 | 0 | ND |
| 2018 | ND | 3 | 0 | ND |
| 2019 | ND | 4 | 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 |
|---|---|---|
| 2014-05-21 | 8045-052114-E01S | ND |
| 2014-07-09 | 8045-070914-E01S | ND |
| 2015-04-15 | ND | |
| 2016-04-13 | 8045-041316-E01S | ND |
| 2017-04-05 | 8045-040517-E01S | ND |
| 2017-08-16 | 8045-081617-E01S | ND |
| 2018-04-11 | 8045-041118-E01S | ND |
| 2018-09-19 | 8045-091918-E01S | ND |
| 2018-10-24 | 8045-102418-E01S | ND |
| 2019-01-16 | 8045-011619-E01S | ND |
| 2019-05-29 | 8045-052919-E01S | ND |
| 2019-07-17 | 8045-071719-E01S | ND |
| 2019-10-09 | 8045-100919-E01S | ND |