| American Water Works Association | www.awwa.org |
| American Water Works Association Research Foundation | www.awwarf.com |
| Austrian Association for Gas and Water Industries (OVGW) | www.ovgw.at |
| Australian Water Association | www.wateraus.net.au |
| Belgian Federation for the Water Sector | www.belgaqua.be |
| Eureau | www.eureau.org |
| European Commission | europa.eu.int/comm |
| European Crop Protection Association (ECPA) | www.ecpa.be |
| European Environment Agency | www.eea.eu.int |
| European Union | www.europa.eu |
| European Water Association (EWA) | www.ewaonline.de |
| Finnish Water and Waste Water Works Association | www.vvy.fi |
| International Water Association (IWA) | www.iwahq.org.uk |
| Italy - FederUtility | www.federutility.it |
| Portuguese Water and Wastewater Association | www.apda.pt |
| Scotland Europa | www.scotlandeuropa.com |
| Spanish Association of Water and Sewerage Service Providers | www.aeas.es |
| Stockholm International Water Institute | www.siwi.org |
| Swiss Gas and Water Industry Association (SVGW) | www.svgw.ch |
| Tearfund | www.tearfund.org |
| United Nations Educational Scientific and Cultural Organization (UNESCO) Water Portal | www.unesco.org/water |
| Water Research Commission South Africa | www.wrc.org.za |
| Water Services Association of Australia | www.wsaa.asn.au |
| Water Supply and Sanitation Collaborative Council | www.wsscc.org |
| WaterAid | www.wateraid.org |
| World Health Organization | www.who.int |
| World Water Council | www.worldwatercouncil.org |
