National Total Autonomous Communities and Cities Type of indicator Treatment Total Spain Chemical oxygen demand (COD) Before 586.8 Spain Chemical oxygen demand (COD) Afterwards 67.3 Spain Biochemistry oxygen demand (DBO5) Before 281.4 Spain Biochemistry oxygen demand (DBO5) Afterwards 21.5 Spain Solids in suspension Before 307.7 Spain Solids in suspension Afterwards 24.1 Spain Total nitrogen Before 40.2 Spain Total nitrogen Afterwards 15.5 Spain Total phosphorus Before 6.5 Spain Total phosphorus Afterwards 1.9 Spain Metals Before 1.0 Spain Metals Afterwards 0.4 Spain Andalucía Chemical oxygen demand (COD) Before 634.9 Spain Andalucía Chemical oxygen demand (COD) Afterwards 69.4 Spain Andalucía Biochemistry oxygen demand (DBO5) Before 331.7 Spain Andalucía Biochemistry oxygen demand (DBO5) Afterwards 18.8 Spain Andalucía Solids in suspension Before 324.8 Spain Andalucía Solids in suspension Afterwards 20.5 Spain Andalucía Total nitrogen Before 49.5 Spain Andalucía Total nitrogen Afterwards 29.8 Spain Andalucía Total phosphorus Before 10.1 Spain Andalucía Total phosphorus Afterwards 3.0 Spain Andalucía Metals Before 6.9 Spain Andalucía Metals Afterwards 2.5 Spain Aragón Chemical oxygen demand (COD) Before 472.3 Spain Aragón Chemical oxygen demand (COD) Afterwards 43.2 Spain Aragón Biochemistry oxygen demand (DBO5) Before 241.0 Spain Aragón Biochemistry oxygen demand (DBO5) Afterwards 8.6 Spain Aragón Solids in suspension Before 258.8 Spain Aragón Solids in suspension Afterwards 12.9 Spain Aragón Total nitrogen Before 27.5 Spain Aragón Total nitrogen Afterwards 10.9 Spain Aragón Total phosphorus Before 5.7 Spain Aragón Total phosphorus Afterwards 1.6 Spain Aragón Metals Before 0.0 Spain Aragón Metals Afterwards 0.0 Spain Asturias, Principado de Chemical oxygen demand (COD) Before 237.6 Spain Asturias, Principado de Chemical oxygen demand (COD) Afterwards 64.7 Spain Asturias, Principado de Biochemistry oxygen demand (DBO5) Before 269.4 Spain Asturias, Principado de Biochemistry oxygen demand (DBO5) Afterwards 70.3 Spain Asturias, Principado de Solids in suspension Before 258.2 Spain Asturias, Principado de Solids in suspension Afterwards 56.3 Spain Asturias, Principado de Total nitrogen Before 20.5 Spain Asturias, Principado de Total nitrogen Afterwards 15.1 Spain Asturias, Principado de Total phosphorus Before 3.1 Spain Asturias, Principado de Total phosphorus Afterwards 2.0 Spain Asturias, Principado de Metals Before 0.0 Spain Asturias, Principado de Metals Afterwards 0.0 Spain Balears, Illes Chemical oxygen demand (COD) Before .. Spain Balears, Illes Chemical oxygen demand (COD) Afterwards 48.9 Spain Balears, Illes Biochemistry oxygen demand (DBO5) Before 490.5 Spain Balears, Illes Biochemistry oxygen demand (DBO5) Afterwards 8.3 Spain Balears, Illes Solids in suspension Before 793.2 Spain Balears, Illes Solids in suspension Afterwards 12.6 Spain Balears, Illes Total nitrogen Before 19.0 Spain Balears, Illes Total nitrogen Afterwards 5.2 Spain Balears, Illes Total phosphorus Before 3.0 Spain Balears, Illes Total phosphorus Afterwards 0.9 Spain Balears, Illes Metals Before 0.0 Spain Balears, Illes Metals Afterwards 0.0 Spain Canarias Chemical oxygen demand (COD) Before 905.1 Spain Canarias Chemical oxygen demand (COD) Afterwards 229.8 Spain Canarias Biochemistry oxygen demand (DBO5) Before 565.1 Spain Canarias Biochemistry oxygen demand (DBO5) Afterwards 146.7 Spain Canarias Solids in suspension Before 349.9 Spain Canarias Solids in suspension Afterwards 69.0 Spain Canarias Total nitrogen Before 64.3 Spain Canarias Total nitrogen Afterwards 15.5 Spain Canarias Total phosphorus Before 5.0 Spain Canarias Total phosphorus Afterwards 1.7 Spain Canarias Metals Before 0.0 Spain Canarias Metals Afterwards 0.0 Spain Cantabria Chemical oxygen demand (COD) Before 312.4 Spain Cantabria Chemical oxygen demand (COD) Afterwards 56.6 Spain Cantabria Biochemistry oxygen demand (DBO5) Before 126.3 Spain Cantabria Biochemistry oxygen demand (DBO5) Afterwards 14.0 Spain Cantabria Solids in suspension Before 50.9 Spain Cantabria Solids in suspension Afterwards 6.8 Spain Cantabria Total nitrogen Before 29.5 Spain Cantabria Total nitrogen Afterwards 8.2 Spain Cantabria Total phosphorus Before 21.1 Spain Cantabria Total phosphorus Afterwards 1.2 Spain Cantabria Metals Before 0.1 Spain Cantabria Metals Afterwards 0.1 Spain Castilla y León Chemical oxygen demand (COD) Before 312.4 Spain Castilla y León Chemical oxygen demand (COD) Afterwards 56.6 Spain Castilla y León Biochemistry oxygen demand (DBO5) Before 280.0 Spain Castilla y León Biochemistry oxygen demand (DBO5) Afterwards 18.5 Spain Castilla y León Solids in suspension Before 274.4 Spain Castilla y León Solids in suspension Afterwards 17.8 Spain Castilla y León Total nitrogen Before 41.2 Spain Castilla y León Total nitrogen Afterwards 17.5 Spain Castilla y León Total phosphorus Before 6.9 Spain Castilla y León Total phosphorus Afterwards 2.1 Spain Castilla y León Metals Before 0.0 Spain Castilla y León Metals Afterwards 0.0 Spain Castilla-La Mancha Chemical oxygen demand (COD) Before 875.7 Spain Castilla-La Mancha Chemical oxygen demand (COD) Afterwards 122.6 Spain Castilla-La Mancha Biochemistry oxygen demand (DBO5) Before 445.7 Spain Castilla-La Mancha Biochemistry oxygen demand (DBO5) Afterwards 29.7 Spain Castilla-La Mancha Solids in suspension Before 404.9 Spain Castilla-La Mancha Solids in suspension Afterwards 29.3 Spain Castilla-La Mancha Total nitrogen Before 48.9 Spain Castilla-La Mancha Total nitrogen Afterwards 8.8 Spain Castilla-La Mancha Total phosphorus Before 7.2 Spain Castilla-La Mancha Total phosphorus Afterwards 1.6 Spain Castilla-La Mancha Metals Before 0.0 Spain Castilla-La Mancha Metals Afterwards 0.0 Spain Cataluña Chemical oxygen demand (COD) Before 606.2 Spain Cataluña Chemical oxygen demand (COD) Afterwards 78.3 Spain Cataluña Biochemistry oxygen demand (DBO5) Before 287.3 Spain Cataluña Biochemistry oxygen demand (DBO5) Afterwards 20.4 Spain Cataluña Solids in suspension Before 323.7 Spain Cataluña Solids in suspension Afterwards 31.9 Spain Cataluña Total nitrogen Before 54.6 Spain Cataluña Total nitrogen Afterwards 20.9 Spain Cataluña Total phosphorus Before 8.7 Spain Cataluña Total phosphorus Afterwards 3.0 Spain Cataluña Metals Before 0.0 Spain Cataluña Metals Afterwards 0.0 Spain Comunitat Valenciana Chemical oxygen demand (COD) Before 540.7 Spain Comunitat Valenciana Chemical oxygen demand (COD) Afterwards 45.7 Spain Comunitat Valenciana Biochemistry oxygen demand (DBO5) Before 275.3 Spain Comunitat Valenciana Biochemistry oxygen demand (DBO5) Afterwards 15.9 Spain Comunitat Valenciana Solids in suspension Before 265.0 Spain Comunitat Valenciana Solids in suspension Afterwards 16.2 Spain Comunitat Valenciana Total nitrogen Before 46.2 Spain Comunitat Valenciana Total nitrogen Afterwards 19.6 Spain Comunitat Valenciana Total phosphorus Before 6.5 Spain Comunitat Valenciana Total phosphorus Afterwards 1.8 Spain Comunitat Valenciana Metals Before 0.0 Spain Comunitat Valenciana Metals Afterwards 0.0 Spain Extremadura Chemical oxygen demand (COD) Before 593.8 Spain Extremadura Chemical oxygen demand (COD) Afterwards 53.8 Spain Extremadura Biochemistry oxygen demand (DBO5) Before 298.9 Spain Extremadura Biochemistry oxygen demand (DBO5) Afterwards 14.8 Spain Extremadura Solids in suspension Before 386.9 Spain Extremadura Solids in suspension Afterwards 14.1 Spain Extremadura Total nitrogen Before 51.9 Spain Extremadura Total nitrogen Afterwards 17.1 Spain Extremadura Total phosphorus Before 1.0 Spain Extremadura Total phosphorus Afterwards 0.1 Spain Extremadura Metals Before 0.0 Spain Extremadura Metals Afterwards 0.0 Spain Galicia Chemical oxygen demand (COD) Before 323.2 Spain Galicia Chemical oxygen demand (COD) Afterwards 77.5 Spain Galicia Biochemistry oxygen demand (DBO5) Before 168.2 Spain Galicia Biochemistry oxygen demand (DBO5) Afterwards 24.9 Spain Galicia Solids in suspension Before 206.7 Spain Galicia Solids in suspension Afterwards 52.8 Spain Galicia Total nitrogen Before 24.7 Spain Galicia Total nitrogen Afterwards 11.6 Spain Galicia Total phosphorus Before 4.8 Spain Galicia Total phosphorus Afterwards 0.8 Spain Galicia Metals Before 0.4 Spain Galicia Metals Afterwards 0.3 Spain Madrid, Comunidad de Chemical oxygen demand (COD) Before 607.2 Spain Madrid, Comunidad de Chemical oxygen demand (COD) Afterwards 45.7 Spain Madrid, Comunidad de Biochemistry oxygen demand (DBO5) Before 318.0 Spain Madrid, Comunidad de Biochemistry oxygen demand (DBO5) Afterwards 10.1 Spain Madrid, Comunidad de Solids in suspension Before 304.3 Spain Madrid, Comunidad de Solids in suspension Afterwards 13.1 Spain Madrid, Comunidad de Total nitrogen Before 0.1 Spain Madrid, Comunidad de Total nitrogen Afterwards 0.0 Spain Madrid, Comunidad de Total phosphorus Before 0.0 Spain Madrid, Comunidad de Total phosphorus Afterwards 0.0 Spain Madrid, Comunidad de Metals Before 0.0 Spain Madrid, Comunidad de Metals Afterwards 0.0 Spain Murcia, Región de Chemical oxygen demand (COD) Before 852.1 Spain Murcia, Región de Chemical oxygen demand (COD) Afterwards 44.6 Spain Murcia, Región de Biochemistry oxygen demand (DBO5) Before 473.7 Spain Murcia, Región de Biochemistry oxygen demand (DBO5) Afterwards 8.8 Spain Murcia, Región de Solids in suspension Before 389.5 Spain Murcia, Región de Solids in suspension Afterwards 10.5 Spain Murcia, Región de Total nitrogen Before 75.1 Spain Murcia, Región de Total nitrogen Afterwards 25.4 Spain Murcia, Región de Total phosphorus Before 9.9 Spain Murcia, Región de Total phosphorus Afterwards 2.6 Spain Murcia, Región de Metals Before 0.8 Spain Murcia, Región de Metals Afterwards 0.0 Spain Navarra, Comunidad Foral de Chemical oxygen demand (COD) Before 512.8 Spain Navarra, Comunidad Foral de Chemical oxygen demand (COD) Afterwards 42.9 Spain Navarra, Comunidad Foral de Biochemistry oxygen demand (DBO5) Before 409.0 Spain Navarra, Comunidad Foral de Biochemistry oxygen demand (DBO5) Afterwards 10.9 Spain Navarra, Comunidad Foral de Solids in suspension Before 244.9 Spain Navarra, Comunidad Foral de Solids in suspension Afterwards 14.5 Spain Navarra, Comunidad Foral de Total nitrogen Before 36.3 Spain Navarra, Comunidad Foral de Total nitrogen Afterwards 18.8 Spain Navarra, Comunidad Foral de Total phosphorus Before 6.0 Spain Navarra, Comunidad Foral de Total phosphorus Afterwards 3.0 Spain Navarra, Comunidad Foral de Metals Before 0.0 Spain Navarra, Comunidad Foral de Metals Afterwards 0.0 Spain País Vasco Chemical oxygen demand (COD) Before 641.0 Spain País Vasco Chemical oxygen demand (COD) Afterwards 65.7 Spain País Vasco Biochemistry oxygen demand (DBO5) Before 336.0 Spain País Vasco Biochemistry oxygen demand (DBO5) Afterwards 12.3 Spain País Vasco Solids in suspension Before 429.4 Spain País Vasco Solids in suspension Afterwards 18.4 Spain País Vasco Total nitrogen Before 63.0 Spain País Vasco Total nitrogen Afterwards 3.6 Spain País Vasco Total phosphorus Before 2.5 Spain País Vasco Total phosphorus Afterwards 1.4 Spain País Vasco Metals Before 0.1 Spain País Vasco Metals Afterwards 0.1 Spain Rioja, La Chemical oxygen demand (COD) Before 409.0 Spain Rioja, La Chemical oxygen demand (COD) Afterwards 21.5 Spain Rioja, La Biochemistry oxygen demand (DBO5) Before 217.0 Spain Rioja, La Biochemistry oxygen demand (DBO5) Afterwards 8.1 Spain Rioja, La Solids in suspension Before 220.0 Spain Rioja, La Solids in suspension Afterwards 7.7 Spain Rioja, La Total nitrogen Before 42.0 Spain Rioja, La Total nitrogen Afterwards 15.0 Spain Rioja, La Total phosphorus Before 5.8 Spain Rioja, La Total phosphorus Afterwards 1.6 Spain Rioja, La Metals Before 0.0 Spain Rioja, La Metals Afterwards 0.0 Ceuta y Melilla Chemical oxygen demand (COD) Before 290.0 Ceuta y Melilla Chemical oxygen demand (COD) Afterwards 45.0 Ceuta y Melilla Biochemistry oxygen demand (DBO5) Before 280.0 Ceuta y Melilla Biochemistry oxygen demand (DBO5) Afterwards 20.0 Ceuta y Melilla Solids in suspension Before 300.0 Ceuta y Melilla Solids in suspension Afterwards 25.0 Ceuta y Melilla Total nitrogen Before 8.1 Ceuta y Melilla Total nitrogen Afterwards 4.1 Ceuta y Melilla Total phosphorus Before 16.3 Ceuta y Melilla Total phosphorus Afterwards 10.9 Ceuta y Melilla Metals Before 0.0 Ceuta y Melilla Metals Afterwards 0.0