Dieldrin
City of Houston Willow Chase
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 | ND | 3 | 0 | ND |
| 2016 | ND | 1 | 0 | ND |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | ND | 3 | 0 | ND |
| 2019 | ND | 1 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2015-05-29 | AC93939 | ND |
| 2015-05-29 | AC93940 | ND |
| 2015-05-29 | AC93937 | ND |
| 2016-03-03 | AD27013 | ND |
| 2018-04-11 | AE22132 | ND |
| 2018-04-11 | AE22133 | ND |
| 2018-04-11 | AE22129 | ND |
| 2019-05-20 | AE67245 | ND |