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Water Use & Efficiency

In the United States, per-capita water use has been declining since the 1980s, largely due to efficiency improvements from product standards, codes, and third-party certification programs. Federal and state regulations also impact water use. The Energy Policy Act of 1992 restricted water use in common household fixtures and appliances to save energy. The recent drought in California resulted in Senate Bill 606 and Assembly Bill 1668, which limit indoor water use to 55 gallons per person per day until 2025.

Water efficiency is an important way to increase a utilities’ water supply reliability, decrease the capital costs of building a new supply, and ultimately reduce treatment and distribution costs. Because water use trends will continue to change, utilities should be aware of and track the drivers of water use so they can plan appropriately for their service area. In addition, integrating water loss control activities and plans with broader institutional goals and objectives can further enhance water supply reliability, increase revenue generation, and accurately account for water usage.

For more information, contact Sydney Samples.

Topic Overview (PDF)
35 Projects 2 Web Tools 4 Case Studies 1 Webcast
Customer Relations & Stakeholder Engagement
Pressure Management
Water Demand & Forecasting
Water Loss Control
Project 5057

Level 1 Water Audit Validation Guidance Manual, Second Edition

$10,000
2021
Completed

Project Highlights

Water audit validation is the process of examining water audit inputs to improve the water audit’s accuracy and document the uncertainty associated with water audit data. This project developed guidance on Level 1 water audit validation using version 6 of...

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Deprecated Principal Investigator
Reinhard
Sturm
Senior Account Manager
Maureen Hodgins

Recent Updates

Project 5242
Residential End Uses of Water, Version 3: A Single-Family and...

Reporting Period: December 2024 – May 2025

Project Update
07/16/2025
Project 5265
Evaluating Changes in Peak Water Demand and How That May Affect the...

Reporting Period: February – August 2024

Project Update
09/04/2024
Project 5265
Evaluating Changes in Peak Water Demand and How That May Affect the...

Reporting Period: August 2024 – February 2025

Project Update
04/04/2025
Project 5238
Best Practices to Attract and Retain a Diverse Water Workforce: Regional...

Reporting Period: July 2024 – December 2024

Project Update
06/17/2025
Project 5197
Unlocking the Nationwide Potential of the Water Reuse EPA...
Project Update
01/25/2024

Resources

Subscriber

Water Conservation: Customer Behavior and Effective Communications

Executive Summary
07/30/2010
Subscriber

Water Conservation: Customer Behavior and Effective Communications

Report
DRPT-4012
07/30/2010
Subscriber

Residential End Uses of Water

Report
DRPT-90781
01/01/2000
View all Water Use & Efficiency Resources

News

Keeping Our Finger on the Pulse of Water

By Julia Dinmore, The Water Research Foundation
09/25/2024

How WRF Prepares the Water Sector to Seize Opportunities & Meet Challenges When it comes to water research, The Water Research Foundation (WRF) is a world leader. But how do...

Water Demand: Improving the Effectiveness of Forecasts and Management

06/06/2019

Water utilities employ demand forecasting at different time scales and for different purposes. Weekly demand forecasts are used for distribution system operations; forecasts a few years into the future are...

Developing Tools and Strategies for Improved Water Utility Energy Efficiency and Integrated Water-Energy Planning

06/06/2019

Energy is usually the second-highest cost item of a water utility’s operating budget. Many opportunities exist for the design and operational optimization of electricity use for water supply and treatment...

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Related Topics

Link

Water Demand & Forecasting

Link

Water Loss Control

Link

Pressure Management

Link

Customer Relations & Stakeholder Engagement

Link

Utility Management

Link

Water Supply Planning

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