Year Settlements with a public sewerage network Dwellings connected to a public sewerage network Length of public sewerage, km Length of public sewerage network per one km water-conduit network, m
total in % of all settlements total in % of all dwellings of
total towns villages
1990 429 14.0 1,616,714 41.6 64.8 3.2 11,964 228
1991 437 14.2 1,648,703 42.1 65.3 3.4 12,524 231
1992 447 14.5 1,679,988 42.7 65.7 3.7 12,933 234
1993 456 14.7 1,701,977 43.0 65.8 3.9 13,815 245
1994 460 14.8 1,724,746 43.4 65.5 4.4 14,902 260
1995 514 16.4 1,761,471 44.2 66.1 5.6 15,683 266
1996 547 17.5 1,801,687 44.9 66.4 6.9 16,974 284
1997 647 20.7 1,855,322 46.0 66.9 8.5 18,472 304
1998 724 23.1 1,925,604 47.6 67.0 11.5 20,922 342
1999 794 25.4 1,992,516 49.1 68.1 14.0 22,732 367
2000 854 27.2 2,078,762 51.0 69.8 16.6 24,683 396
2001 992 31.6
2,181,239a
 53.4 69.9 20.2 27,233 435
2002 1,156 36.9
2,299,383a
 56.0 72.2 23.2 30,536 484
2003 1,302 41.9
2,441,796a
 59.1 74.7 27.4 33,268 522
2004 1,392 44.2
2,595,717a
 62.2 76.9 31.9 35,447 551
2005 1,469 46.7
2,733,936a
 64.9 79.0 34.7 36,863 570
2006 1,545 49.1 2,856,674 67.4 81.1 36.7 38,744 597
2007 1,607 51.0 2,979,885 69.8 83.2 39.7 40,530 621
2008 1,669 53.0 3,054,956 71.0 84.0 41.1 41,897 643
2009 1,725 54.7 3,119,437 72.0 84.7 42.3 42,438 651
2010 1,741 55.2 3,144,228 72.3 84.7 43.2 43,200 655
2011 1,763 55.9
3,169,206a
 72.7 84.7 43.4 41,786 633
2012 1,833 58.1 3,258,172 74.0 85.0 46.7 42,958 657
2013 1,860 59.0 3,305,776 75.0 85.8 47.9 43,524 668
2014 1,900 60.2 3,383,559 76.6 86.8 50.2 44,699 683
2015 1,998 63.3 3,472,513 78.6 88.0 54.0 47,819 723
2016 2,095 66.4 3,571,061 80.7 89.0 58.7 49,851 752
2017 2,100 66.6 3,612,720 81.4 89.7 59.6 50,211 755
2018 2,098 66.5 3,654,562 82.0 90.1 61.0 50,510 756
2019 2,106 66.8 3,705,596 82.8 90.8 61.8 50,922 761
2020 2,113 67.0 3,734,329 83.0 90.8 62.5 52,499 782
2021 2,144 68.0 3,771,138 83.5 90.9 63.7 52,959 784
2022b 2,156 68.3 3,814,270 83.2 90.0 64.7 53,389 789
2023 2,178 69.0
3,849,021a
83.6a
90.2a
65.9a
 53,691 791
2024
2,202a
69.8a
 3,885,637 84.2 90.5 67.1 54,083 792

Footnotes

aOn 5 November 2025 a data correction was made on data.
bThe break in the time series is due to the difference between the housing stock carried forward from previous years and the housing stock of the 2022 Census.

Explanation of symbols

green number
Revised datum.
.