Surveys on Water Supply and Sewerage
Indicators on water
C** Structural indicators of the water network by Autonomous Communities and Cities
Unidades: metre/resident m3/km/year

;2022;2020;2018;2016;2014;2013;2012;2011;2010;2009;2008;2007;2006;2005;2004;2003;2002;2001;2000;
Spain;
    1. Length of the supply network by resident (metres/resident);5,7;5,6;5,7;5,5;5,6;5,8;..;..;..;..;..;..;..;..;..;..;..;..;..;
    2. Length of the sewerage network per resident (metres/resident);4,5;3,1;3,1;3,1;3,2;3,2;..;..;..;..;..;..;..;..;..;..;..;..;..;
    3. Real losses per kilometre of the supply network (m3/km/year);2.543;2.448;2.476;2.728;2.503;2.492;..;..;..;..;..;..;..;..;..;..;..;..;..;
    4. Number of storm ponds;275;270;268;275;314;272;..;..;..;..;..;..;..;..;..;..;..;..;..;
Andalucía;
    1. Length of the supply network by resident (metres/resident);5,3;5,4;5,4;5,3;5,5;5,3;..;..;..;..;..;..;..;..;..;..;..;..;..;
    2. Length of the sewerage network per resident (metres/resident);4;3,8;3,6;3,7;3,8;3,7;..;..;..;..;..;..;..;..;..;..;..;..;..;
    3. Real losses per kilometre of the supply network (m3/km/year);3.054;2.833;2.734;3.559;3.281;3.208;..;..;..;..;..;..;..;..;..;..;..;..;..;
    4. Number of storm ponds;9;9;9;8;8;6;..;..;..;..;..;..;..;..;..;..;..;..;..;
Aragón;
    1. Length of the supply network by resident (metres/resident);4,2;4,1;3,9;4,1;3,9;3,7;..;..;..;..;..;..;..;..;..;..;..;..;..;
    2. Length of the sewerage network per resident (metres/resident);2,1;3,5;3,6;3,7;3,3;3;..;..;..;..;..;..;..;..;..;..;..;..;..;
    3. Real losses per kilometre of the supply network (m3/km/year);5.841;5.574;4.940;4.176;5.170;5.683;..;..;..;..;..;..;..;..;..;..;..;..;..;
    4. Number of storm ponds;12;9;9;12;12;9;..;..;..;..;..;..;..;..;..;..;..;..;..;
Asturias, Principado de;
    1. Length of the supply network by resident (metres/resident);8,7;8,6;8,1;8,6;8,1;9;..;..;..;..;..;..;..;..;..;..;..;..;..;
    2. Length of the sewerage network per resident (metres/resident);4,6;5;4,8;5;4,9;5,1;..;..;..;..;..;..;..;..;..;..;..;..;..;
    3. Real losses per kilometre of the supply network (m3/km/year);3.231;2.323;1.889;2.358;2.317;2.467;..;..;..;..;..;..;..;..;..;..;..;..;..;
    4. Number of storm ponds;1;1;1;0;0;0;..;..;..;..;..;..;..;..;..;..;..;..;..;
Balears, Illes;
    1. Length of the supply network by resident (metres/resident);4,1;3,4;3,6;3,6;3,7;3,8;..;..;..;..;..;..;..;..;..;..;..;..;..;
    2. Length of the sewerage network per resident (metres/resident);2,3;3,2;3,1;3,2;3,3;3,3;..;..;..;..;..;..;..;..;..;..;..;..;..;
    3. Real losses per kilometre of the supply network (m3/km/year);3.757;4.812;5.007;5.536;4.527;4.058;..;..;..;..;..;..;..;..;..;..;..;..;..;
    4. Number of storm ponds;0;0;0;0;0;0;..;..;..;..;..;..;..;..;..;..;..;..;..;
Canarias;
    1. Length of the supply network by resident (metres/resident);5,9;7,4;8,1;7,8;7,4;7,8;..;..;..;..;..;..;..;..;..;..;..;..;..;
    2. Length of the sewerage network per resident (metres/resident);2,2;2,4;2,8;2,5;2,6;3,9;..;..;..;..;..;..;..;..;..;..;..;..;..;
    3. Real losses per kilometre of the supply network (m3/km/year);3.262;3.083;2.859;3.110;2.650;2.691;..;..;..;..;..;..;..;..;..;..;..;..;..;
    4. Number of storm ponds;2;2;2;2;2;2;..;..;..;..;..;..;..;..;..;..;..;..;..;
Cantabria;
    1. Length of the supply network by resident (metres/resident);10,3;6,4;6,8;6,5;6,7;6,1;..;..;..;..;..;..;..;..;..;..;..;..;..;
    2. Length of the sewerage network per resident (metres/resident);6,7;4;4;4,2;4,2;4,4;..;..;..;..;..;..;..;..;..;..;..;..;..;
    3. Real losses per kilometre of the supply network (m3/km/year);3.038;3.861;4.626;6.116;4.761;5.187;..;..;..;..;..;..;..;..;..;..;..;..;..;
    4. Number of storm ponds;10;10;9;6;6;4;..;..;..;..;..;..;..;..;..;..;..;..;..;
Castilla y León;
    1. Length of the supply network by resident (metres/resident);6,7;6,8;6,6;6,8;6,6;7,3;..;..;..;..;..;..;..;..;..;..;..;..;..;
    2. Length of the sewerage network per resident (metres/resident);5,3;4,1;4,4;4;4,3;4,1;..;..;..;..;..;..;..;..;..;..;..;..;..;
    3. Real losses per kilometre of the supply network (m3/km/year);2.734;2.294;2.579;2.578;3.000;3.189;..;..;..;..;..;..;..;..;..;..;..;..;..;
    4. Number of storm ponds;10;6;5;6;2;2;..;..;..;..;..;..;..;..;..;..;..;..;..;
Castilla-La Mancha;
    1. Length of the supply network by resident (metres/resident);3,4;6,8;7,2;7;6,7;7,3;..;..;..;..;..;..;..;..;..;..;..;..;..;
    2. Length of the sewerage network per resident (metres/resident);7;4,1;4,1;4;3,9;4,3;..;..;..;..;..;..;..;..;..;..;..;..;..;
    3. Real losses per kilometre of the supply network (m3/km/year);2.812;3.217;2.863;2.512;2.738;2.346;..;..;..;..;..;..;..;..;..;..;..;..;..;
    4. Number of storm ponds;6;6;6;6;6;7;..;..;..;..;..;..;..;..;..;..;..;..;..;
Cataluña;
    1. Length of the supply network by resident (metres/resident);4,3;5,1;5,2;5,4;5,4;5,6;..;..;..;..;..;..;..;..;..;..;..;..;..;
    2. Length of the sewerage network per resident (metres/resident);21,7;1,9;1,9;1,9;1,9;1,9;..;..;..;..;..;..;..;..;..;..;..;..;..;
    3. Real losses per kilometre of the supply network (m3/km/year);2.191;2.207;2.124;2.272;1.669;1.739;..;..;..;..;..;..;..;..;..;..;..;..;..;
    4. Number of storm ponds;19;19;19;19;16;8;..;..;..;..;..;..;..;..;..;..;..;..;..;
Comunitat Valenciana;
    1. Length of the supply network by resident (metres/resident);6,7;7,9;8,1;6,9;7,6;8,6;..;..;..;..;..;..;..;..;..;..;..;..;..;
    2. Length of the sewerage network per resident (metres/resident);2,2;2,6;3,1;3,1;2,9;3,2;..;..;..;..;..;..;..;..;..;..;..;..;..;
    3. Real losses per kilometre of the supply network (m3/km/year);2.297;1.922;2.531;2.508;2.043;2.002;..;..;..;..;..;..;..;..;..;..;..;..;..;
    4. Number of storm ponds;9;9;9;9;9;6;..;..;..;..;..;..;..;..;..;..;..;..;..;
Extremadura;
    1. Length of the supply network by resident (metres/resident);8,2;7,8;7,8;7,4;6,4;7;..;..;..;..;..;..;..;..;..;..;..;..;..;
    2. Length of the sewerage network per resident (metres/resident);3,7;3,6;3,6;3;3;3,2;..;..;..;..;..;..;..;..;..;..;..;..;..;
    3. Real losses per kilometre of the supply network (m3/km/year);2.807;2.407;2.903;3.559;3.594;3.448;..;..;..;..;..;..;..;..;..;..;..;..;..;
    4. Number of storm ponds;5;5;5;5;2;1;..;..;..;..;..;..;..;..;..;..;..;..;..;
Galicia;
    1. Length of the supply network by resident (metres/resident);2,7;6,1;5,6;5,9;5,8;6,4;..;..;..;..;..;..;..;..;..;..;..;..;..;
    2. Length of the sewerage network per resident (metres/resident);7,1;4,5;4,5;4,8;4,9;5;..;..;..;..;..;..;..;..;..;..;..;..;..;
    3. Real losses per kilometre of the supply network (m3/km/year);3.090;2.391;2.620;3.550;2.504;2.525;..;..;..;..;..;..;..;..;..;..;..;..;..;
    4. Number of storm ponds;54;54;54;62;54;54;..;..;..;..;..;..;..;..;..;..;..;..;..;
Madrid, Comunidad de;
    1. Length of the supply network by resident (metres/resident);5,1;2,7;2,8;2,8;2,8;2,8;..;..;..;..;..;..;..;..;..;..;..;..;..;
    2. Length of the sewerage network per resident (metres/resident);3,3;2,2;2,3;2,3;2,2;1,9;..;..;..;..;..;..;..;..;..;..;..;..;..;
    3. Real losses per kilometre of the supply network (m3/km/year);274;1.086;570;775;1.295;1.695;..;..;..;..;..;..;..;..;..;..;..;..;..;
    4. Number of storm ponds;65;63;63;63;63;64;..;..;..;..;..;..;..;..;..;..;..;..;..;
Murcia, Región de;
    1. Length of the supply network by resident (metres/resident);10,4;7,5;7,7;7,6;7,5;7,4;..;..;..;..;..;..;..;..;..;..;..;..;..;
    2. Length of the sewerage network per resident (metres/resident);6;4,2;4,2;4,3;4,1;4;..;..;..;..;..;..;..;..;..;..;..;..;..;
    3. Real losses per kilometre of the supply network (m3/km/year);1.084;1.286;1.282;1.489;1.535;1.439;..;..;..;..;..;..;..;..;..;..;..;..;..;
    4. Number of storm ponds;10;10;10;10;10;9;..;..;..;..;..;..;..;..;..;..;..;..;..;
Navarra, Comunidad Foral de;
    1. Length of the supply network by resident (metres/resident);6,2;5,6;5,2;5,2;4,8;4,3;..;..;..;..;..;..;..;..;..;..;..;..;..;
    2. Length of the sewerage network per resident (metres/resident);7,1;5,9;5,9;4,9;5,2;5,2;..;..;..;..;..;..;..;..;..;..;..;..;..;
    3. Real losses per kilometre of the supply network (m3/km/year);3.123;3.609;3.530;2.812;3.470;4.042;..;..;..;..;..;..;..;..;..;..;..;..;..;
    4. Number of storm ponds;21;21;21;21;21;11;..;..;..;..;..;..;..;..;..;..;..;..;..;
País Vasco;
    1. Length of the supply network by resident (metres/resident);3,9;5,9;6;5,9;5,6;6,1;..;..;..;..;..;..;..;..;..;..;..;..;..;
    2. Length of the sewerage network per resident (metres/resident);2,5;1,8;1,8;1,9;2,1;2,3;..;..;..;..;..;..;..;..;..;..;..;..;..;
    3. Real losses per kilometre of the supply network (m3/km/year);2.837;1.523;1.532;1.103;1.350;954;..;..;..;..;..;..;..;..;..;..;..;..;..;
    4. Number of storm ponds;46;46;46;46;28;28;..;..;..;..;..;..;..;..;..;..;..;..;..;
Rioja, La;
    1. Length of the supply network by resident (metres/resident);5,6;3,7;3,6;3;3,4;3,4;..;..;..;..;..;..;..;..;..;..;..;..;..;
    2. Length of the sewerage network per resident (metres/resident);3,3;3,8;3,3;2,7;3;3,4;..;..;..;..;..;..;..;..;..;..;..;..;..;
    3. Real losses per kilometre of the supply network (m3/km/year);4.519;7.776;6.528;6.949;4.539;5.820;..;..;..;..;..;..;..;..;..;..;..;..;..;
    4. Number of storm ponds;0;0;0;0;0;0;..;..;..;..;..;..;..;..;..;..;..;..;..;
Ceuta and Melilla;
    1. Length of the supply network by resident (metres/resident);3,6;2,4;2,3;2,4;2,3;2,3;..;..;..;..;..;..;..;..;..;..;..;..;..;
    2. Length of the sewerage network per resident (metres/resident);1,8;1,8;1,7;1,8;1,7;1,7;..;..;..;..;..;..;..;..;..;..;..;..;..;
    3. Real losses per kilometre of the supply network (m3/km/year);6.594;12.036;13.012;15.325;14.954;14.724;..;..;..;..;..;..;..;..;..;..;..;..;..;
    4. Number of storm ponds;0;0;0;0;0;0;..;..;..;..;..;..;..;..;..;..;..;..;..;
Notas:
In the national total, the data relating to the autonomous cities of Ceuta and Melilla are included.

 The values of the variables 'Lengths of supply and sewerage networks' and 'Real losses per km of network' in each Autonomous Community are considered to be advance data until a representative time series is established that allows an estimate to be made that is not affected by the variability of the survey's expanded factors.

 C* - Table modified on 05/19/2023
Fuente: National Statistics Institute