-
Water quality surveillance
01.10.1982
-
Process aids for slow sand filtration
01.10.1983
-
Water use in the Andes
01.01.1992
The Andean region is, like many highland areas, experiencing the effects of environmental degradation, both of its own and others' making. This has put increased pressures on water resources in many highland areas. This issue of Waterlines looks at some of the ways these problems can be addressed. -
Using biotic indicators to assess water quality in Peru
01.01.1992
The contaminants that make polluted water unsafe for humans are even more fatal to the organisms that live in the river. Marlene Guerrero and Barry Lloyd explain how the presence or absence of these crucial organisms can help us monitor water quality. -
Multi-stage surface water treatment for community water supply in Colombia
01.01.1992
Using a multi-barrier treatment for drinking-water greatly increases the potential of slow sand filters. Gerardo Galvis, Jan teun Visscher, and Barry Lloyd describe how this treatment process contributes to a remarkable overall improvement in water quality. -
Catchment surveillance for water resource management
01.07.1997
As water resources deteriorate and demand increases, should governments even attempt to manage and protect micro-catchments? A project in the eastern Caribbean concludes that they can and should — with a little help from state-of-the-art surveillance techniques, and practical grassroots action.