The collaborative development of a standard methodology for designing storage volume requirements for use across the UK water industry. Ensuring resilience by balancing operational and emergency volume requirements with water quality compliance.
current guidance, regulation, methods, parameters and variables used by the industry
step by step design process in collaboration with industry experts
clear and transparent service reservoir volume design guidance
There are multiple factors, requirements and constraints that need to be considered when designing current and future water storage volume. Reservoir design needs to balance supply, demand and hydraulics as well as the need to ensure there is no detriment to the quality of the water being stored. There is a need for a standard approach to service reservoir design that encompasses all the various facets of demand, hydraulics, resilience, water quality, maintenance and regulation.
A standard methodology designed by industry specialists will assist companies in the decision-making process for designing potable water storage assets that ensures all drivers are considered and assessed. This design methodology provides the justification required to investment managers, regulators and for decisions made in the initial design process. It also allows a direct comparison of designs and associated costs for each asset.
This project was delivered under the WRc collaborative Portfolio Research programme. It was supported by nine water utilities, who together supply 50% of the UK population, providing over 9,000 ML/day of potable water supplies.
The guidance has been presented as a flow diagram showing the overall approach and key steps required to calculate volumetric capacity for reservoirs. A specific requirement for the guidance was to include a basic or core volume calculation onto which other components can be added for items such as resilience, growth, unusual demand etc. The guidance includes the derivation of the inputs to be used in existing volume calculations.
Robin Pratt, Strategic Planner
Scottish Water
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