Dieldrin
Chelmsford Water District
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.
11
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 | 8 | 0 | ND |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | ND | 3 | 0 | ND |
ppb = parts per billion
All test results
| Date | Result |
|---|---|
| 2016-02-01 | ND |
| 2016-02-01 | ND |
| 2016-02-01 | ND |
| 2016-05-26 | ND |
| 2016-08-02 | ND |
| 2016-08-02 | ND |
| 2016-08-02 | ND |
| 2016-08-03 | ND |
| 2019-02-05 | ND |
| 2019-02-05 | ND |
| 2019-02-05 | ND |