| Water and Environmental Health at London and Loughborough | www.lboro.ac.uk/well/ |
| Water for Life, 2005-2015: international decade of action | www.un.org/waterforlifedecade |
| Water in the School | www.waterintheschool.co.uk |
| Water in the south east | www.waterinthesoutheast.com |
| Water Industry Commission for Scotland | www.watercommissioner.co.uk |
| Water Regulations Advisory Scheme (WRAS) | www.wras.co.uk |
| Water Research Centre (WRc) | www.wrcplc.co.uk |
| Water Research Commission South Africa | www.wrc.org.za |
| Water Services Association of Australia | www.wsaa.asn.au |
| Water Services Regulatory Authority (Ofwat) | www.ofwat.gov.uk |
| Water Supply and Sanitation Collaborative Council | www.wsscc.org |
| Water Technology | www.water-technology.net |
| WaterAid | www.wateraid.org |
| Watermark | www.watermark.gov.uk |
| The Waterways Trust | www.thewaterwaystrust.com |
| Waterwise | www.waterwise.org.uk |
| Welsh Assembly Government | new.wales.gov.uk |
| Wales Tourism Alliance | www.tourismalliance.org.uk |
| Wessex Water Services Ltd | www.wessexwater.co.uk |
| Wildfowl & Wetlands Trust (The WWT) | www.wwt.org.uk |
| The Wildlife and Countryside Directorate | www.defra.gov.uk/wildlife-countryside |
| Wildlife Trusts | www.wildlifetrusts.org |
| Women's Environmental Network | www.wen.org.uk |
| World Health Organisation | www.who.int |
| World Water Council | www.worldwatercouncil.org |
| WWF | www.wwf-uk.org |
| Yorkshire Water Services Ltd | www.yorkshirewater.com |
