IWR-MAIN是一种帮助水资源规划者分析城市水资源需求并制定最佳长期需求管理计划的工具。版本6.0是以面向对象的方式开发的，因此每个软件模块都正确地使用了当今已知的最佳可用软件技术。IWR-MAIN 6.0的模块化特性将允许扩展地理信息系统、与非城市用水技术的潜在联系，以及在未来的软件版本中对废水流量进行建模。

IWR-MAIN is a tool to help water planners analyze urban water demand and develop optimal, long-term demand management programs. Version 6.0 was developed in an object-oriented fashion, such that each software module makes proper use of the best available software technology known today. The modular character of IWR-MAIN 6.0 will allow extensions to Geographic Information Systems, potential links to non-urban water consumption technologies, and modeling of wastewater flows in future software versions.