http://www.who.int/

http://www.who.int/water_sanitation_health/dwq/dwqtraining/en/index.html [Accessed: 07.10.2010]

These training materials (collection of PDF-files) cover a wide range of topics and include 23 sessions - both presentations and practical sessions. Each presentation in the materials includes a session plan, a background paper and overhead transparencies. Each practical session provides guidance as to how such sessions might be delivered and the materials required.