Iran is facing the problem of the water crisis; however, rainwater harvesting can be a solution to manage sustainable water resources in this country. This study aims to investigate the technical feasibility of rainwater harvesting system (RWHS) implementation in 7 cities located in the north of Iran. The analysis conducted on a particular scenario of rainwater demand based on water balance concept and analysis of the rainwater tank capacity compatibility. Results indicate that RWHS implementation is technically feasible in the majority of houses of the residential sector of all the seven cities, while a few numbers of apartments can implement the system for the scenario. Therefore, the influence of the roof area variation on the potential for potable water savings in the apartment sector was evaluated to find a more efficient design of RWHS for future construction. The main conclusion drawn from the research is that the potential for potable water savings in order to investigate the technical feasibility for implementing RWHS, be evaluated for each location, as it depends extremely on potable water demand. An inconsistent result with Ghisi et al. (2007) was found by this research that shows cities with higher potable water demand require larger tank capacity.

伊朗正面临水危机的问题；但是，雨水收集可以成为管理该国可持续水资源的解决方案。这项研究旨在调查伊朗北部7个城市实施雨水收集系统（RWHS）的技术可行性。基于水平衡概念对雨水需求的特定情景进行了分析，并分析了雨水箱的容量。结果表明，在所有七个城市的住宅部门的大多数房屋中，实施RWHS在技术上都是可行的，而少数公寓可以实施此方案。因此，评估了屋顶面积变化对公寓部门节水潜力的影响，以找到更有效的RWHS设计，以用于未来施工。从研究中得出的主要结论是，为了调查实施RWHS的技术可行性，可在每个地点评估饮用水的节约潜力，因为这在很大程度上取决于饮用水的需求。与Ghisi等人的结果不一致。（2007年）的这项研究表明，饮用水需求较高的城市需要更大的水箱容量。与Ghisi等人的结果不一致。（2007年）的这项研究表明，饮用水需求较高的城市需要更大的水箱容量。与Ghisi等人的结果不一致。（2007年）的这项研究表明，饮用水需求较高的城市需要更大的水箱容量。