Umwelt: Zeitreihen Land
| Jahr | Insgesamt | Schmutz- wasser | Fremd- wasser | Niederschlags- wasser |
|---|---|---|---|---|
| 1.000 m3 | ||||
| 1991 | 393.252 | 209.520 | 87.403 | 96.329 |
| 1995 | 472.676 | 208.705 | 105.799 | 158.172 |
| 1998 | 473.957 | 223.717 | 94.933 | 155.307 |
| 2001 | 561.549 | 231.003 | 117.536 | 213.010 |
| 2004 | 475.484 | 230.477 | 99.332 | 145.675 |
| 2007 | 514.557 | 225.024 | 103.497 | 186.036 |
| 2010 | 525.371 | 227.328 | 111.750 | 186.293 |
| 2013 | 545.785 | 232.401 | 119.660 | 193.724 |
| 2016 | 533.913 | 230.120 | 108.702 | 195.091 |
| 2019 | 497.118 | 225.813 | 93.154 | 178.151 |
| 1 Ab 2010 ohne Kleinkläranlagen. | ||||