The solution achieves full-cycle data connectivity from “design–construction–operation–management” and deeply integrates three core types of data: Digital delivery data (e.g., BIM models, design drawings, equipment ledgers), OT production operation data (e.g., SCADA real-time process parameters, PLC device status, energy consumption indicators), IT information business data (e.g., work order management, inventory, financial reports). This “all-domain data integration” not only resolves the traditional fragmentation of “control, management, and business systems operating independently,” but also provides standardized, reliable, and shareable data support for upper-layer applications such as process optimization, intelligent O&M, and scheduling decision-making, establishing the “infrastructure” for water digital transformation.