A building's water consumption is shaped by its use and occupants' needs. Maintenance, detecting leaks and managing outdoor irrigation affect the outcome alongside tap and flushing fixture choices. Water efficiency should therefore extend from product selection to operational monitoring. The project team's objective is to use appropriate solutions where they are needed and track how those solutions perform in operation.
Where is water being used?
Start by identifying the building's water-using areas and systems. Everyday occupant needs, landscaping and building-specific technical uses form parts of the same consumption picture. A new project is assessed using expected use, while meter and maintenance records help establish the starting point for an existing building.
This distinction helps identify priorities. Changes may not deliver the expected benefit if the team has not established whether an issue concerns equipment, leakage or operating practices. EPA's WaterSense at Work resource for commercial and institutional buildings also considers water management alongside monitoring, maintenance and different uses. EPA — Water management practices.
Matching fixtures to user needs
When selecting taps, showers and flushing fixtures, consider performance alongside water consumption. Product information helps explain the conditions under which equipment operates. Understanding the operating team's maintenance and spare-part needs also matters for the selection's long-term value.
The WaterSense program in the United States is one example of an approach to identifying water-efficient products. Selection must also reflect local rules and the acceptance requirements of the relevant certification system. A label alone does not demonstrate that every requirement for a particular project has been met. EPA — WaterSense.
Monitoring meter data regularly
The main meter records total consumption; separate measurement at appropriate points helps explain different uses. Keeping regular records makes unusual increases easier to identify. The measurement plan should also specify who checks the data and which team investigates a deviation.
Comparisons should account for occupancy, operating patterns and conditions during the relevant period. A consumption difference should not be presented directly as a saving before its causes have been examined. A design calculation describes expected use, while an operating record describes actual consumption. Keeping these forms of information distinct and understandable helps assess the effect of an improvement.
Landscaping and suitable water sources
Landscape water needs should be assessed alongside climate, plant species, soil and irrigation. Regionally appropriate planting and irrigation matched to demand should also suit the maintenance plan. Discussing landscaping early makes it easier to coordinate irrigation lines with other work around the building.
Rainwater or other suitable sources may also be considered for reuse where project conditions allow. Water quality, intended use, treatment needs and local rules must be assessed together. Reuse does not mean that every source can be used directly for every purpose; operational and maintenance responsibilities must also be defined.
Connecting with certification objectives
LEED provides a framework addressing indoor and outdoor water use and metering. Water forms part of EDGE's resource efficiency approach. YeS-Int (YeS-TR) building assessment includes the “Su ve Atık Yönetimi” module, meaning Water and Waste Management. Applicable requirements should be read in the context of the project's selected system and scope. USGBC — LEED design and construction guide, IFC — EDGE scope, Ministry of Environment, Urbanisation and Climate Change — Public buildings guide, in Turkish.
Preparing as a project team
Fixture schedules, the landscape approach, measurement arrangements and any existing consumption records provide useful starting information. They help clarify responsibilities across design and operating teams. Keeping the selected solutions in implementation documents and tracking changes supports continuity of the objective through construction.
Through AECO's LEED, EDGE and YeS-Int consulting, water efficiency decisions can be considered alongside certification objectives. Sharing the project stage, intended use and available information helps define the necessary calculation and documentation scope.