ADAPTABILITY OF PRECIPITATION RESERVOIRS FOR EMERGENCY WATER SUPPLIES

Abstract

 After comparing the water quality of precipitation storage (SW), precipitation (P), tap water, lake water (LW), and river water (RW), and assessing the usability of SW as an emergency water supply, we studied seasonal changes in SW quality. Component concentrations of SW were higher than those of P. Results show that the dry deposits on the roof during fine weather were discharged into the storage tank during rainfalls. However, the pH data of SW are around 7 and neutrality, and the total dissolved solids and the concentrations of ions were stable and not so inferior. Since SW is easier to access during emergencies than P, LW and RW, SW is indicated prospective and useful as an emergency supply.