Philip Reidy

Philip Reidy is senior water resources engineer and a principal consultant for Geosyntec based in Malayasia. He has more than 25 years of geotechnical and stormwater management experience, specializing in the design, construction, and technology development of innovative rainwater harvesting and stormwater management systems.

He is an authority on the implementation of remote sensing and active controls for distributed environmental management systems, and he is co-author of a method patent for integrating weather forecast information and real-time sensor networks for these and other applications.

Focusing primarily on the design and construction of commercial-scale rainwater harvesting systems, Mr. Reidy has designed and/or built over 100 such systems and pioneered the use of modular plastic vault systems as cistern storage. An expert in the use of these systems, he has been lead investigator for three litigation support projects involving collapsed underground structures.

Mr. Reidy’s geotechnical work focuses on foundation engineering for heavy construction projects, where he has performed and directed civil engineering analysis, design, and monitoring programs for large civil works projects.  He specialized in excavation support system design and construction in soft and unconsolidated soils.  His experience in this area includes a wide range of foundation design in materials from bedrock to soft soils, excavation support systems, construction dewatering and site drainage design, tunnels, landfills, dams and other municipal, commercial and industrial facilities.

Contact Philip Reidy by email at