1. Introduction
  1.1 Significance of Water Efficiency in Buildings
  1.2 Objectives of the Study
2. Water Consumption Patterns in Buildings
  2.1 Analysis of Indoor and Outdoor Water Use
  2.2 Factors Affecting Water Demand in Different Building Types
3. Technologies for Water Efficiency
  3.1 Low-Flow Fixtures and Water-Saving Devices
  3.2 Greywater Recycling Systems
  3.3 Rainwater Harvesting and Reuse
4. Design Strategies for Water Efficiency
  4.1 Site Planning and Landscape Design
  4.2 Plumbing System Optimization
  4.3 Water-Efficient Appliance and Fixture Selection
5. Policy and Regulatory Approaches
  5.1 Building Codes and Standards for Water Conservation
  5.2 Incentive Programs and Rebates
  5.3 Water Pricing and Metering Policies