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WATER DEMAND CALCULATOR

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Overview

This Water Demand Calculator estimates the supply demand for residential buildings including single- and multi-family dwellings, as well as cold and hot water branches and risers for indoor water use.

Estimating Plumbing Sizing for Water Demand

Design a better plumbing system to deliver water effectively while conserving water and maximizing comfort. 

Watch Practically Perfect Plumbing Part 1 and Part 2 (CEU webinars) for further guidance. 

Access the We Stand Water Demand Calculator

Related Resources

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Contractor Toolkit: Attracting Business Using Search Engine Optimization (SEO)

Download the Contractor Toolkit to improve your local visibility and help you attract customers online.

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BPA: Building Science Principles Course: A Free Resource for Educators

This introductory course, presented in slideshow format, is designed to be a starting point for those interested in any career in residential energy efficiency. The course provides learners with basic information on how homes work through the lens of building science.

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BPA: Nevada Contractor Meeting Series – Summer 2025

Join BPA's contractor roundtables for Nevada on Zoom this summer to discuss the status of initiatives such as Home Energy Rebates, relevant tax credits, and incentives.