全国各地的供水和废水公用事业业主都面临着巨大的压力 基础设施更换、升级和扩建项目。传统模式 美国的供水和废水资本设施 设计-投标-建造（D-B-B）模式。传统模式并不总是如此 满足业主特定的项目交付需求。因此，业主 考虑替代交付方法，包括设计-建造（D-B）， 设计-建造-运营（D-B-O）、设计-建造-维护（D-B-M）和施工 管理（CM）。每种备选项目交付方法都有 优势和劣势。而传统的设计-投标-建造模式 为水和废水处理行业提供了良好的服务， 显然还有改进的余地。本文的目的是提供 拥有“新的和改进的”项目交付模式的公用事业业主 协同设计-施工-运营（D-C-O）项目交付方法。这个 协作式D-C-O方法建立在长期以来被证明成功的 传统的设计-投标-建造方法，结合了 替代项目交付方法。协同D-C-O方法集成了 设计师、建造师和运营维护人员的专业知识 （O&M）人员参与设计过程，同时:维护业主的 参与和控制，以确保质量、可靠性、可操作性， 施工成本和生命周期成本适当平衡；保留 独立设计顾问的利益，代表业主的最佳利益 利益；以及保留竞争性招标，以确保业主支付合理的价格 该项目的价格公平合理。包括数字。

Water and wastewater utility owners across the country are facing significant infrastructure replacement, upgrade and expansion projects. The traditional model for delivering water and wastewater capital facilities in the United States has been the design-bid-build (D-B-B) model. The traditional model doesn't always meet the owner's specific project delivery needs. Therefore, owners are considering alternative delivery approaches, including design-build (D-B), design-build-operate (D-B-O), design-build-maintain (D-B-M), and construction management (CM). Each of these alternative project delivery methods have strengths and weaknesses. While the traditional design-bid-build model has served, and generally still does serve the water and wastewater industry well, there is clearly room for improvement. The purpose of this paper is to provide utility owners with a 'new and improved' project delivery model, the Collaborative Design-Construct-Operate (D-C-O) method of project delivery. The Collaborative D-C-O method builds on the long-time proven success of the traditional design-bid-build approach, by incorporating many of the strengths of alternative project delivery methods. The Collaborative D-C-O method integrates the expertise of the designer, the constructor and operations and maintenance (O&M) personnel into the design process, while: maintaining the owner's involvement and control to make sure issues of quality, reliability, operability, constructibility and life-cycle costs are properly balanced; retaining the benefits of an independent design consultant, representing the owner's best interests; and preserving competitive bidding to ensure that the owner pays a fair and reasonable price for the project. Includes figures.