Download Water Demand Calculator
Provisions for using the WDC are published in the 2018 UPC and 2017 WE•Stand appendices. Both documents contain a download link for the WDC.
The Water Demand Calculator is a Microsoft Office Excel file and requires a compatible version of Excel 2009 or later to prevent loss of functionality. This file also uses active content (macros). When downloading this file, Microsoft Office has security features causing a message bar to appear warning that the active content may contain viruses and other security hazards that could harm your computer or your organization’s network and that the macros have been disabled. This does not mean that viruses have been detected. It only means that active content has been detected and the user is being warned. Since the source file comes from IAPMO, the file can be trusted and the macros can be enabled. You may need to change the settings in the Trust Center on your computer (find this in the Options section of Microsoft Office applications). Once the file is trusted, the warning will no longer appear.
Although care has been taken to ensure the accuracy, completeness and reliability of the Water Demand Calculator (“Calculator”), IAPMO makes no warranties, express or implied, or representations as to the accuracy of the Calculator. IAPMO assumes no liability or responsibility for any error or omissions in the information contained in or output by the Calculator. IAPMO assumes no responsibility for the consequences of use of such information, nor for any infringement of third party intellectual property rights which may result from its use.