Dieldrin
San Francisco City Water System
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.
12
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 | N/A | 0 | 0 | N/A |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | ND | 12 | 0 | ND |
| 2019 | N/A | 0 | 0 | N/A |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2018-01-11 | 9590-007-1115 | ND |
| 2018-03-06 | 9590-004-1031 | ND |
| 2018-03-06 | 9590-008-0914 | ND |
| 2018-03-08 | 9590-006-0925 | ND |
| 2018-06-12 | 9590-004-1058 | ND |
| 2018-06-12 | 9590-006-1012 | ND |
| 2018-06-12 | 9590-008-0930 | ND |
| 2018-07-17 | 9590-007-0519 | ND |
| 2018-09-18 | 9590-004-0855 | ND |
| 2018-09-18 | 9590-006-0945 | ND |
| 2018-09-18 | 9590-008-1025 | ND |
| 2018-10-17 | 9590-007-0730 | ND |