Endrin
Danbury Water Department
Endrin is a banned organochlorine insecticide that is persistent and bioaccumulative. Endrin damages the nervous, immune and reproductive systems in people. It also harms fish, birds and other wildlife.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2018 | ND | 2 | 0 | ND |
| 2019 | ND | 4 | 0 | ND |
| 2020 | ND | 2 | 0 | ND |
| 2021 | ND | 2 | 0 | ND |
| 2022 | ND | 4 | 0 | ND |
| 2023 | ND | 4 | 0 | ND |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
EWG Health Guideline: 0.3 ppb
The EWG Health Guideline of 0.3 ppb for endrin was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against change to the heart and blood vessels.
EPA Maximum Contaminant
Level (MCL): 2 ppb
The legal limit for endrin, established in 1992, was based on a toxicity study in laboratory animals conducted in the 1960s.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2018-10-11 | SOCR 200508919 | ND |
| 2018-10-11 | SOCR 200508918 | ND |
| 2019-06-20 | SOC 200537240 | ND |
| 2019-06-20 | SOC 200537278 | ND |
| 2019-12-04 | SOC 200558922 | ND |
| 2019-12-04 | SOC 200558921 | ND |
| 2020-03-19 | SOCR 200569997 | ND |
| 2020-03-19 | SOCR 200569998 | ND |
| 2021-04-15 | SOCR 200613293 | ND |
| 2021-04-15 | SOCR 200613290 | ND |
| 2022-08-11 | 292975 | ND |
| 2022-08-11 | 292977 | ND |
| 2022-11-03 | 300312 | ND |
| 2022-11-03 | 300311 | ND |
| 2023-01-12 | 304532 | ND |
| 2023-01-12 | 304533 | ND |
| 2023-10-11 | CP24524 | ND |
| 2023-10-11 | CP24526 | ND |