This volume of Guidelines for drinking-water quality describes the methods employed in the surveillance of drinking-water quality in the light of the special problems of small-community supplies, particularly those of developing countries, and outlines the strategies necessary to ensure that surveillance is effective. It is also concerned with the linkage between surveillance and remedial action and with the form that remedial action should take.
WHO (1997): Guidelines for Drinking-water Quality. Second Edition, Volume 3. Surveillance and Control of Community Supplies. Geneva: World Health Organization (WHO) URL [Accessed: 04.04.2012]