History of Sanitary Surveys
Drinking-water supply surveillance is necessary to identify and evaluate factors that may pose a risk to drinking water safety. This effort requires a systematic evaluation of all aspects of the drinking-water supply, from catchment to consumer (WHO, 1976). Sanitary surveys are an essential part of a surveillance program. Qualified individuals inspect and evaluate actual and potential sources of contamination in the water supply. (WHO, 1997). Sanitary surveys are a comprehensive inspection, primarily by observation, of all aspects of a water supply system, which includes the water source, facilities, equipment, and operation and maintenance.