Nowadays, an important challenge to the health service is the need of a systematic and permanent drinking water systems risk assessment. The risk analysis methodology is not an easy understanding or applicable tool for the health service routine, so the purpose of this work is a suggestion for the hazard identification and risk categorization associated to the drinking water systems. The methodology proposed in the " Health Environmental Surveillance associated to Drinking Water Quality Manual" was used as reference. Hazard situations were identified also at the treatment exit as at distribution systems studied. The tools for hazard identification and risk categorization proposed are applicable and allowed a general vision of the system. They also are helpful for the planning and the definition of intervention priorities as a way to reduce health risks associated to the drinking water systems.
Surveillance; water quality; hazard identification; risk analysis
