Dieldrin
North Point Johnson Lake
Dieldrin is a highly toxic insecticide that was banned in the 1970s due to its persistence in the environment and toxicity to people and wildlife.
8
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 | ND | 3 | 0 | ND |
| 2017 | ND | 2 | 0 | ND |
| 2018 | ND | 1 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2016-09-06 | ND | |
| 2016-09-06 | ND | |
| 2016-11-22 | ND | |
| 2017-03-20 | ND | |
| 2017-05-22 | ND | |
| 2018-04-09 | 543627 | ND |
| 2019-04-15 | 604252 | ND |
| 2019-08-26 | 619506 | ND |