A new-ish but under-used industry Code will be written into more policies as the frequency and severity of water damage incidents on construction sites increases.  Recognising the need for robust risk management, experts from both the insurance and engineering industries have developed a Joint Code of Practice for Escape of Water (EoW) Prevention and Management on Construction Sites and Buildings Undergoing Refurbishment. The Code applies across the supply chain to both permanent and temporary water systems and puts in place a collaborative risk-based approach that addresses the root causes of EoW during pre-construction and construction phases and mitigates the effect when it occurs. The focus on prevention includes the incorporation of modern technology to detect anomalous flow rates and then automatically isolate pipework and inform the planned emergency response. EoW incidents can lead to costly claims due to delayed handovers, damaged materials and wasted resources but they can also adversely impact a project's environmental and sustainability goals to monitor and reduce water consumption. Risk management is key and insurers should write in Code compliance to ensure that good practice is stringently followed.