4-Androstene-3,17-dione
City of Chicago
Human sex hormones are sometimes detected at low concentrations in drinking water. There are no current health guidelines to determine whether these exposures are safe, or if they could pose a risk to human health.
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 | 0.233 ppt | 6 | 2 | ND - 0.800 ppt |
| 2015 | ND | 2 | 0 | ND |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | N/A | 0 | 0 | N/A |
ppt = parts per trillion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-04-28 | 3015706 | ND |
| 2014-04-28 | 3015739 | ND |
| 2014-08-13 | 3081743 | 0.800 ppt |
| 2014-08-13 | 3081723 | 0.600 ppt |
| 2014-10-07 | 3118971 | ND |
| 2014-10-07 | 3118986 | ND |
| 2015-01-13 | 3169379 | ND |
| 2015-01-13 | 3169399 | ND |