Surveys on Water Supply and Sewerage Water supply and sewerage Volume of water provided to the public supply network by Autonomous Communities and Cities, source type and period. Units: thousands of cubic metres 2020 2018 2016 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 National Total Volume of water provided to the public supply network 4,243,555 4,235,947 4,290,577 4,271,966 4,323,475 4,485,264 4,513,818 4,580,645 4,709,261 4,940,976 4,969,041 4,697,857 4,873,202 4,973,463 4,947,008 4,783,127 4,803,471 4,782,096 1. Volume of water metered and distributed 3,177,815 3,188,055 3,199,910 3,214,034 3,210,843 3,338,028 3,381,318 3,393,271 3,500,578 3,731,399 3,778,036 3,913,059 4,002,180 4,042,399 4,019,615 3,855,697 3,870,650 3,781,680 2. Volume of unmetered water 1,065,740 1,047,892 1,090,647 1,057,932 1,112,632 1,147,236 1,132,500 1,187,374 1,208,683 1,209,577 1,191,005 .. .. .. .. .. .. .. - Real water losses 651,826 652,841 701,087 651,061 678,064 710,942 776,896 802,502 791,029 820,398 790,169 784,798 871,022 931,064 927,393 927,430 932,821 1,000,416 - Apparent water losses 413,914 395,051 389,560 406,871 434,568 436,294 355,604 384,872 417,654 389,179 400,836 .. .. .. .. .. .. .. 01 Andalucía Volume of water provided to the public supply network 792,785 747,296 759,283 774,668 758,263 792,450 793,125 802,301 867,854 861,264 879,369 912,082 1,021,494 979,756 935,912 878,851 858,157 820,608 1. Volume of water metered and distributed 571,979 544,382 540,794 557,113 547,493 576,176 577,958 586,083 634,697 664,876 674,428 765,376 839,417 784,226 737,567 702,959 694,716 667,280 2. Volume of unmetered water 220,806 202,914 218,489 217,555 210,770 216,274 215,167 216,218 233,157 196,388 204,941 .. .. .. .. .. .. .. - Real water losses 129,604 123,777 157,749 151,636 142,059 125,439 143,965 136,217 146,889 135,508 127,445 146,706 182,077 195,530 198,345 175,892 163,441 153,328 - Apparent water losses 91,202 79,137 60,740 65,919 68,711 90,835 71,202 80,001 86,268 60,880 77,496 .. .. .. .. .. .. .. 02 Aragón Volume of water provided to the public supply network 143,772 138,598 134,182 136,307 140,605 148,707 136,287 153,825 160,377 165,151 153,218 138,892 152,341 145,919 163,861 160,506 160,117 172,024 1. Volume of water metered and distributed 97,701 101,723 102,785 97,052 95,406 106,036 97,449 104,256 108,516 113,256 101,814 111,741 115,627 113,896 125,300 116,030 108,990 110,567 2. Volume of unmetered water 46,071 36,875 31,397 39,255 45,199 42,671 38,838 49,569 51,861 51,895 51,404 .. .. .. .. .. .. .. - Real water losses 30,386 25,406 22,386 27,086 28,249 26,029 27,575 37,673 36,821 34,251 32,899 27,151 36,714 32,023 38,561 44,476 51,127 61,457 - Apparent water losses 15,685 11,469 9,011 12,169 16,950 16,642 11,263 11,896 15,040 17,644 18,505 .. .. .. .. .. .. .. 03 Asturias, Principado de Volume of water provided to the public supply network 103,915 104,933 120,402 114,172 116,005 115,033 120,245 121,519 123,506 128,172 132,891 121,227 120,886 128,458 116,928 109,460 116,221 108,870 1. Volume of water metered and distributed 70,895 76,093 83,733 78,790 74,885 77,558 82,647 86,698 86,457 98,830 103,151 109,556 106,063 103,528 95,943 92,108 93,788 83,173 2. Volume of unmetered water 33,020 28,840 36,669 35,382 41,120 37,475 37,598 34,821 37,049 29,342 29,740 .. .. .. .. .. .. .. - Real water losses 20,269 15,772 20,994 19,882 23,557 19,545 23,138 22,285 24,453 20,246 19,133 11,671 14,823 24,930 20,985 17,352 22,433 25,697 - Apparent water losses 12,751 13,068 15,675 15,500 17,563 17,930 14,460 12,536 12,596 9,096 10,607 .. .. .. .. .. .. .. 04 Balears, Illes Volume of water provided to the public supply network 111,137 113,624 125,540 111,288 109,278 106,795 101,573 98,771 107,954 113,558 111,967 118,920 114,468 120,070 99,365 93,538 86,852 87,460 1. Volume of water metered and distributed 82,743 87,576 94,235 85,556 84,969 81,979 74,509 73,902 81,702 88,749 86,057 95,743 91,401 92,477 77,408 71,792 65,706 67,421 2. Volume of unmetered water 28,394 26,048 31,305 25,732 24,309 24,816 27,064 24,869 26,252 24,809 25,910 .. .. .. .. .. .. .. - Real water losses 20,049 20,150 22,852 18,579 17,138 18,364 19,051 16,662 17,326 16,622 15,428 23,177 23,067 27,593 21,957 21,746 21,146 20,039 - Apparent water losses 8,345 5,898 8,453 7,153 7,171 6,452 8,013 8,207 8,926 8,187 10,482 .. .. .. .. .. .. .. 05 Canarias Volume of water provided to the public supply network 211,724 212,814 226,846 203,906 220,094 226,587 218,420 202,786 212,011 243,050 237,488 188,311 232,225 219,781 190,554 185,286 171,068 176,905 1. Volume of water metered and distributed 141,190 147,470 157,510 144,545 158,521 162,915 159,714 154,426 153,904 180,215 178,337 154,152 186,012 177,253 155,613 150,177 132,590 138,035 2. Volume of unmetered water 70,534 65,344 69,336 59,361 61,573 63,672 58,706 48,360 58,107 62,835 59,151 .. .. .. .. .. .. .. - Real water losses 51,585 50,896 52,254 41,315 44,394 43,934 46,378 43,040 49,196 51,525 48,881 34,159 46,213 42,528 34,941 35,109 38,478 38,870 - Apparent water losses 18,949 14,448 17,082 18,046 17,179 19,738 12,328 5,320 8,911 11,310 10,270 .. .. .. .. .. .. .. 06 Cantabria Volume of water provided to the public supply network 70,734 72,627 75,597 74,310 72,079 74,601 77,555 75,132 74,916 81,147 77,663 87,182 80,620 77,383 77,712 81,280 82,135 79,578 1. Volume of water metered and distributed 49,457 46,548 45,482 48,087 47,767 50,748 50,029 51,180 53,233 59,603 56,060 65,550 64,232 61,406 68,854 65,713 65,920 64,026 2. Volume of unmetered water 21,277 26,079 30,115 26,223 24,312 23,853 27,526 23,952 21,683 21,544 21,603 .. .. .. .. .. .. .. - Real water losses 14,449 18,156 23,068 18,645 18,745 18,605 21,746 19,880 15,059 14,004 13,827 21,632 16,388 15,977 8,858 15,567 16,215 15,552 - Apparent water losses 6,828 7,923 7,047 7,578 5,567 5,248 5,780 4,072 6,624 7,540 7,776 .. .. .. .. .. .. .. 07 Castilla y León Volume of water provided to the public supply network 249,301 246,976 267,380 298,613 290,043 296,003 310,311 320,536 291,917 292,443 290,794 278,719 296,803 320,497 337,720 323,775 322,689 340,193 1. Volume of water metered and distributed 187,076 185,204 192,215 228,279 213,035 212,398 227,831 221,573 200,351 207,324 198,864 230,402 239,186 254,701 286,555 260,522 247,080 264,330 2. Volume of unmetered water 62,225 61,772 75,165 70,334 77,008 83,605 82,480 98,963 91,566 85,119 91,930 .. .. .. .. .. .. .. - Real water losses 37,464 41,263 42,618 49,374 58,338 50,999 63,510 65,316 62,265 57,030 51,021 48,317 57,617 65,796 51,165 63,253 75,609 75,863 - Apparent water losses 24,761 20,509 32,547 20,960 18,670 32,606 18,970 33,647 29,301 28,089 40,909 .. .. .. .. .. .. .. 08 Castilla - La Mancha Volume of water provided to the public supply network 209,258 203,968 201,973 200,063 213,752 203,867 212,842 205,723 209,883 214,187 220,255 207,653 211,013 206,968 218,511 194,652 208,574 206,325 1. Volume of water metered and distributed 143,427 143,020 149,899 147,301 160,503 150,879 156,224 142,725 149,213 158,675 163,626 168,806 173,256 168,897 175,685 159,438 172,358 172,367 2. Volume of unmetered water 65,831 60,948 52,074 52,762 53,249 52,988 56,618 62,998 60,670 55,512 56,629 .. .. .. .. .. .. .. - Real water losses 44,852 41,749 34,403 38,041 35,642 41,331 50,390 51,028 50,356 41,634 32,670 38,847 37,757 38,071 42,826 35,214 36,216 33,958 - Apparent water losses 20,979 19,199 17,671 14,721 17,607 11,657 6,228 11,970 10,314 13,878 23,959 .. .. .. .. .. .. .. 09 Cataluña Volume of water provided to the public supply network 598,753 602,061 617,843 592,090 616,236 648,762 655,712 672,603 666,180 720,433 776,156 697,384 651,999 691,245 736,346 772,319 780,275 824,762 1. Volume of water metered and distributed 454,227 467,324 465,434 457,383 461,504 504,301 509,837 514,872 510,990 547,907 613,298 591,939 541,377 576,186 618,368 632,718 661,254 657,130 2. Volume of unmetered water 144,526 134,737 152,409 134,707 154,732 144,461 145,875 157,731 155,190 172,526 162,858 .. .. .. .. .. .. .. - Real water losses 85,852 82,484 89,616 66,545 71,950 88,895 94,819 102,525 100,873 108,691 120,341 105,445 110,622 115,059 117,978 139,601 119,021 167,632 - Apparent water losses 58,674 52,253 62,793 68,162 82,782 55,566 51,056 55,206 54,317 63,835 42,517 .. .. .. .. .. .. .. 10 Comunitat Valenciana Volume of water provided to the public supply network 503,786 554,234 486,313 488,956 481,587 506,726 485,022 507,658 527,108 608,573 585,086 546,001 518,726 562,567 543,550 476,998 488,331 526,315 1. Volume of water metered and distributed 389,668 407,669 368,952 381,995 364,059 369,422 356,403 363,797 395,768 438,975 421,075 421,497 393,009 422,820 389,367 351,382 363,360 368,606 2. Volume of unmetered water 114,118 146,565 117,361 106,961 117,528 137,304 128,619 143,861 131,340 169,598 164,011 .. .. .. .. .. .. .. - Real water losses 76,640 99,944 84,734 77,119 85,678 102,978 100,323 113,650 102,445 128,894 131,350 124,504 125,717 139,747 154,183 125,616 124,971 157,709 - Apparent water losses 37,478 46,621 32,627 29,842 31,850 34,326 28,296 30,211 28,895 40,704 32,661 .. .. .. .. .. .. .. 11 Extremadura Volume of water provided to the public supply network 92,347 101,366 112,047 104,601 111,935 115,719 110,105 115,490 113,708 123,973 137,120 136,498 140,350 145,585 136,376 116,740 112,347 98,864 1. Volume of water metered and distributed 61,740 67,141 73,179 67,890 69,626 75,522 74,042 78,298 79,683 90,963 98,774 111,253 108,617 114,719 114,108 97,182 95,105 81,855 2. Volume of unmetered water 30,607 34,225 38,868 36,711 42,309 40,197 36,063 37,192 34,025 33,010 38,346 .. .. .. .. .. .. .. - Real water losses 20,005 24,026 28,478 25,147 26,319 27,736 23,585 24,353 20,075 22,117 20,446 25,245 31,733 30,866 22,268 19,558 17,242 17,009 - Apparent water losses 10,602 10,199 10,390 11,564 15,990 12,461 12,478 12,839 13,950 10,893 17,900 .. .. .. .. .. .. .. 12 Galicia Volume of water provided to the public supply network 242,880 236,572 258,671 243,137 247,402 260,696 240,918 252,478 278,831 291,140 283,261 275,924 282,564 295,173 291,997 313,451 318,596 295,788 1. Volume of water metered and distributed 177,892 176,868 187,900 186,405 184,559 189,873 182,743 188,948 197,023 206,568 213,865 229,631 235,015 239,245 236,681 261,066 270,868 255,670 2. Volume of unmetered water 64,988 59,704 70,771 56,732 62,843 70,823 58,175 63,530 81,808 84,572 69,396 .. .. .. .. .. .. .. - Real water losses 39,235 39,934 55,556 39,769 44,556 48,868 40,723 49,554 40,086 53,280 44,413 46,293 47,549 55,928 55,316 52,385 47,728 40,118 - Apparent water losses 25,753 19,770 15,215 16,963 18,287 21,955 17,452 13,976 41,722 31,292 24,983 .. .. .. .. .. .. .. 13 Madrid, Comunidad de Volume of water provided to the public supply network 500,916 491,816 490,951 504,814 509,232 526,020 553,894 550,816 563,438 561,529 573,119 513,849 562,280 592,053 608,389 562,789 574,261 558,887 1. Volume of water metered and distributed 436,216 421,750 418,022 406,951 414,258 429,556 446,421 440,375 450,493 460,768 465,111 450,694 489,181 510,612 522,697 487,808 495,169 482,722 2. Volume of unmetered water 64,700 70,066 72,929 97,863 94,974 96,464 107,473 110,441 112,945 100,761 108,008 .. .. .. .. .. .. .. - Real water losses 19,846 10,353 13,564 23,194 30,059 31,968 36,743 36,445 44,049 48,365 55,560 63,155 73,099 81,441 85,692 74,981 79,092 76,165 - Apparent water losses 44,854 59,713 59,365 74,669 64,915 64,496 70,730 73,996 68,896 52,396 52,448 .. .. .. .. .. .. .. 14 Murcia, Región de Volume of water provided to the public supply network 128,941 124,763 128,559 125,414 123,666 132,644 134,015 135,131 143,650 148,200 145,630 140,936 140,320 145,789 121,499 124,215 123,985 93,211 1. Volume of water metered and distributed 105,007 103,322 103,973 100,916 99,241 106,673 107,581 106,829 113,497 112,893 114,106 120,262 123,073 117,347 102,649 102,426 100,637 73,847 2. Volume of unmetered water 23,934 21,441 24,586 24,498 24,425 25,971 26,434 28,302 30,153 35,307 31,524 .. .. .. .. .. .. .. - Real water losses 14,657 14,536 16,718 16,953 15,632 18,959 21,387 20,094 20,805 21,890 19,431 20,674 17,247 28,442 18,850 21,789 23,348 19,364 - Apparent water losses 9,277 6,905 7,868 7,545 8,793 7,012 5,047 8,208 9,348 13,417 12,093 .. .. .. .. .. .. .. 15 Navarra, Comunidad Foral de Volume of water provided to the public supply network 71,561 66,192 61,124 60,487 62,056 73,004 77,043 69,909 74,522 69,428 65,571 66,507 64,641 60,252 76,963 68,335 67,624 66,930 1. Volume of water metered and distributed 55,632 51,586 49,495 48,367 48,260 55,849 60,083 55,605 58,411 56,060 53,535 57,292 55,298 52,128 63,801 59,694 55,870 57,124 2. Volume of unmetered water 15,929 14,606 11,629 12,120 13,796 17,155 16,960 14,304 16,111 13,368 12,036 .. .. .. .. .. .. .. - Real water losses 13,218 11,896 9,323 10,641 11,092 11,322 13,171 12,301 11,439 8,957 7,772 9,215 9,343 8,124 13,162 8,641 11,754 9,806 - Apparent water losses 2,711 2,710 2,306 1,479 2,704 5,833 3,789 2,003 4,672 4,411 4,264 .. .. .. .. .. .. .. 16 País Vasco Volume of water provided to the public supply network 150,256 154,531 167,276 184,827 192,243 198,951 229,222 235,356 231,951 247,885 238,194 216,821 231,532 235,659 243,878 261,094 273,271 265,069 1. Volume of water metered and distributed 117,282 122,753 136,487 146,602 154,091 154,880 176,180 183,420 187,875 203,974 195,794 189,224 202,899 214,180 213,770 195,723 202,231 187,378 2. Volume of unmetered water 32,974 31,778 30,789 38,225 38,152 44,071 53,042 51,936 44,076 43,911 42,400 .. .. .. .. .. .. .. - Real water losses 19,802 19,819 14,070 16,475 12,552 23,798 39,251 36,965 34,380 36,007 36,037 27,597 28,633 21,479 30,108 65,371 71,040 77,691 - Apparent water losses 13,172 11,959 16,719 21,750 25,600 20,273 13,791 14,971 9,696 7,904 6,363 .. .. .. .. .. .. .. 17 Rioja, La Volume of water provided to the public supply network 41,781 43,933 36,170 34,245 39,022 37,274 38,848 40,179 41,266 48,623 41,452 35,956 34,404 36,164 33,229 46,957 42,163 45,694 1. Volume of water metered and distributed 25,032 27,290 21,173 22,051 23,896 24,366 28,550 27,987 29,478 32,398 30,870 30,081 28,795 29,181 25,594 39,447 35,377 40,405 2. Volume of unmetered water 16,749 16,643 14,997 12,194 15,126 12,908 10,298 12,192 11,788 16,225 10,582 .. .. .. .. .. .. .. - Real water losses 8,978 7,345 6,574 4,798 6,332 6,481 8,277 7,681 7,426 10,708 6,772 5,875 5,609 6,983 7,635 7,510 6,786 5,289 - Apparent water losses 7,771 9,298 8,423 7,396 8,794 6,427 2,021 4,511 4,362 5,517 3,810 .. .. .. .. .. .. .. Ceuta and Melilla Volume of water provided to the public supply network 19,708 19,643 20,400 20,068 19,977 21,425 18,681 20,432 20,189 22,220 19,807 14,995 16,536 10,144 14,218 12,881 16,805 14,613 1. Volume of water metered and distributed 10,651 10,336 8,642 8,751 8,770 8,897 13,117 12,297 9,287 9,365 9,271 9,860 9,722 9,597 9,655 9,512 9,631 9,744 2. Volume of unmetered water 9,057 9,307 11,758 11,317 11,207 12,528 5,564 8,135 10,902 12,855 10,536 .. .. .. .. .. .. .. - Real water losses 4,935 5,335 6,130 5,862 5,772 5,691 2,864 6,833 7,086 10,669 6,743 5,135 6,814 547 4,563 3,369 7,174 4,869 - Apparent water losses 4,122 3,972 5,628 5,455 5,435 6,837 2,700 1,302 3,816 2,186 3,793 .. .. .. .. .. .. .. Notes: 1) Up to the year 2006 (included), the questionnaire of the Survey on Water Supply and Treatment: -The variable 'total water volume registered and supplied by type of user' was asked as 'total water volume controlled and supplied to users'. -The variabe 'Real losses' was asked in the questionnaire with the literal 'Water volume losses in the distribution network (leaks,breakdowns, ...)'. -The variable 'Apparent losses' was not asked in the survey questionnaire. -The variable 'water volume supplied to the public supply network' was not asked in the questionnaire. Its estimation was made summing the variables: 'total water volume controlled and supplied to users' and 'Water volume losses in the distribution network (leaks, breakdowns, ...)'. This methodological changes must be taken into account when comparing data and indicators of the 2000-2006 series with the infomation from 2007 onwards. Source: National Statistics Institute