Survey of Corrosion and Precipitation Potential in Dual Water Distribution System in Kharanagh District of Yazd Province

Corrosion and precipitation in drinking and sanitary water in distribution systems leads to economic and health damages. The goal of this study was to survey the chemical quality of water in Kharanagh ward in Yazd province and to predict the potential of corrosion and precipitation in these waters.

For determining the chemical quality of water, some cross-sectional samples with 2-4L of water volume were taken. All of the samples were collected, stored and preserved in glass or polyethylene containers and were analyzed based on standard methods. The potential of corrosion and precipitation in waters was calculated by Langelier Saturation Index (LSI), Risnar Index (RI) and decision was made based on calcium carbonate résistance.

Based on the values of LSI, drinking and sanitary waters showed precipitative properties. Based on RI, the waters showed a corrosive quality from the point of corrosion and precipitation potential. Based on calcium carbonate résistance parameter, the waters had precipitative quality.

The chemical quality of water in Kharanagh district is non-balanced that leads to precipitation in water distribution and other equipments thus planning water quality stabilization for the elimination of economics damages is necessary.