Assessments of Roof-Harvested Rainwater in Disctrict Dir Lower, Khyber Pakhtunkhwa Pakistan

The main objective of this study was to assess the quality and quantity roof-harvested rainwater overcome water shortage problem in area. We also aimed find health hazards associated with For purpose, samples were collected from five sites analyzed using standard methods World Health Organization American Public Association a laboratory. analysis showed that all physicochemical parameters within permissible limits WHO’s guidelines except pH, turbidity, some trace metals such as iron (Fe) lead (Pb). mean values pH range 5.18 6.26, indicating slight acidity, while highest turbidity found at 5.77 NTU. Similarly, concentrations Fe Pb 0.95 mg/L 0.056 mg/L, respectively, which above limit for drinking water. annual rainwater-harvesting potential assessed formula rainfall × roof area× runoff coefficient. area 56.803 L per household. At same time, average monthly 4733 This shows A risk assessment heavy is safe does not pose any risk. concludes suitable other domestic consumption if proper care taken clean storage system divert first flush system.