Water Audit Services

Advancing Building Water Efficiency and Sustainable Management Through International ASHRAE Standards

As corporate sustainability governance and water-related risk management continue to gain importance, Water Audits have become a critical tool for hotels, commercial buildings, and large-scale facilities seeking to improve water management and efficiency.Following the international ASHRAE 191 Water Efficiency Standard, RCI Sustainability Group provides professional Water Audit services to help building owners comprehensively assess water use performance, establish water baselines, and support ongoing improvements and sustainable management strategies.

RCI Sustainability Group notes that a Water Audit goes beyond simple water consumption tracking. It is an integrated service combining data analysis, on-site inspections, and system diagnostics, enabling owners to gain a clear understanding of how water is used across different spaces and building systems, and to develop practical, actionable management and improvement measures.。

A Whole-Building Approach to Systematic Water Use Analysis

RCI Sustainability Group’s Water Audit services adopt a whole-building operational perspective, analyzing water use characteristics across different functional areas. In hotel buildings, this typically includes:

• Guestrooms and public areas (such as guestroom water use, public restrooms, and swimming pools)

• Food service and back-of-house operations (kitchens, cleaning, and maintenance activities)

• Mechanical and HVAC systems (water use associated with HVAC equipment)

• Landscape and irrigation systems (planting, irrigation, and decorative water features)

By consolidating historical water bills, meter data, system drawings, and equipment information, RCI Sustainability Group develops a comprehensive profile of building water use distribution and effectively identifies anomalies or inefficiencies to support further improvement evaluations.

International Project Experience in Operational Environments

RCI Sustainability Group has also applied its Water Audit services in the operational environment of a well-known international hotel chain in Japan.Following the ASHRAE 191 international standard, the project team conducted water data consolidation, system inventory reviews, and on-site inspections covering major water-use categories including guestrooms, public facilities, food service operations, mechanical systems, and landscape irrigation. This process supported the establishment of a building water baseline and provided a valuable reference for subsequent water management and sustainability strategy planning.

Alignment with ASHRAE 191 to Strengthen Compliance and Sustainability Foundations

Water Audit services delivered by RCI Sustainability Group are fully aligned with the ASHRAE 191 Water Efficiency Standard, helping building owners to:

• Evaluate whether building water use aligns with international water efficiency principles

• Establish water baselines to support ESG reporting and sustainability performance disclosure

• Respond to the water management and compliance expectations of international hotel brands and corporate stakeholders

RCI Sustainability Group emphasizes that through standardized audit processes, water management can transition from experience-based judgment to data-driven decision-making, reducing operational risk and enhancing management transparency.

From Operational Optimization to Investment Evaluation: Actionable Recommendations

Beyond water use assessment alone, RCI Sustainability Group’s Water Audit services deliver comprehensive evaluation outcomes, including:

• Identification of abnormal water use and potential sources of waste

• Low-cost, immediately implementable operational and management improvement recommendations

• Medium- to long-term investment guidance for equipment and system upgrades

• Prioritization of improvement actions and implementation sequencing

  
  

Supporting Water Resilience and a Sustainable Future for Buildings

RCI Sustainability Group emphasizes that Water Audits are not merely water-saving measures, but a critical foundation for building water resilience, addressing ESG requirements, and supporting long-term sustainable operations.Through systematic audit methodologies aligned with international standards, building owners and operators can more confidently respond to water cost fluctuations and the long-term challenges posed by climate change.