| Madrid | MADRID | www.aqualogy.net/es | |
| Murcia | MURCIA | www.esamur.com | |
| Paterna | VALENCIA | www.dam-aguas.es | |
| Zaragoza | ZARAGOZA | www.ecociudad-zaragoza.es | |
| Madrid | MADRID | www.fcc.es | |
| Laracha (A) | CORUÑA | www.pmaresiduos.es | |
| Pamplona/Iruña | NAVARRA | www.nilsa.com | |
| Barcelona | BARCELONA | | |
| Valencia | VALENCIA | www.emarsa.com | |
| Ortuella | VIZCAYA | www.ansareo.com | |
| Madrid | MADRID | | |
| Mataró | BARCELONA | www.web.simmar.cat | |
| Alicante/Alacant | ALICANTE | www.emarasa.es | |
| Alfaro | RIOJA (LA) | www.aemaservicios.com | |
| Palmas de Gran Canaria (Las) | PALMAS (LAS) | | |
| Barcelona | BARCELONA | www.clabsa.es | |
| Barcelona | BARCELONA | www.heraholding.com | |
| Girona | GERONA | | |
| Granollers | BARCELONA | www.ccbserveis.cat | |
| Madrid | MADRID | | |
| Palma de Mallorca | BALEARES | | |
| Granollers | BARCELONA | www.besos.cat | |
| Vic | BARCELONA | www.depuradoresosona.cat | |
| Vigo | PONTEVEDRA | www.gesecoaguas.es | |
| Igualada | BARCELONA | | |
| Sant Llorenç des Cardassar | BALEARES | www.santllorenc.cat | |
| Chipiona | CÁDIZ | www.newater.es | |
| Oviedo | ASTURIAS | | |
| Ciudad Real | CIUDAD REAL | www.fcc.es | |
| Plasencia | CÁCERES | www.ambling.es | |
| Santa Fe | GRANADA | www.bpeninsular.com | |
| San Mateo de Gállego | ZARAGOZA | | |
| Realejos (Los) | SANTA CRUZ DE TENERIFE | www.hernandezbellosl.com | |
| Barcelona | BARCELONA | www.aqualyt.com | |
| Alhama de Aragón | ZARAGOZA | | |
| Alhama de Aragón | ZARAGOZA | www.acciona.com | |
| Tarancón | CUENCA | www.rayzar.com | |
| Málaga | MÁLAGA | www.pepenunez.com | |
| Sant Joan les Fonts | GERONA | www.olotnet.cat | |
| Manlleu | BARCELONA | www.neida.cat | |
| Barakaldo | VIZCAYA | www.desatascosisurbide.com | |
| Puente Genil | CÓRDOBA | www.gesthidro.com | |
| Sant Fruitós de Bages | BARCELONA | www.peinaje.com | |
| Llanera | ASTURIAS | www.astgrupo.com | |
| Gandia | VALENCIA | www.aguasdevalencia.es | |
| Barcelona | BARCELONA | www.heraholding.com | |
| Mairena del Aljarafe | SEVILLA | www.conlima.es | |
| Móstoles | MADRID | www.hydrocombus.es | |
| Burgo de Ebro (El) | ZARAGOZA | www.aqlara.com | |
| Barcelona | BARCELONA | www.cesmedambiental.es | |