Protection of distribution networks water quality

Abstract

This paper presents a number of issues regarding the protection of drinking water quality in conveyance and distribution networks. Studies and research have shown that the physical and hydraulic integrity of the conveyance and distribution system influences the drinking water quality parameters. The stateof pipelines, tanks, and hydraulic installations’ physical integrity may influence the influx of contaminants into drinking water. The physical integrity factors considered in the research are: pipe material, geometric parameters, interior and exterior protection quality, corrosion, structural failure, degradation. The hydraulic integrity factors considered in the research are: variation of flow and pressure, velocity, sedimentation phenomenon, cavitation. Water integrity factors are: disinfectant dose, storage and movement time, physical and chemical reactions with the pipe, contaminant infiltration, age, biological stability. The case study forIaşi city confirms the evolution of water quality parameters along the pipe network.