* The average monthly single-family household water use is 15 CCF. Please see your bill for your appropriate CCF usage. Water use may be lower in winter, higher in summer. SMWD measures consumption in Hundred Cubic Feet (CCF). 1 CCF = 748 Gallons.
** Irrigable area (square feet) can be retrieved on your current SMWD water bill.
**** Consult your SMWD bill to find what power zone you are in, if applicable.
***** Your outdoor budget will adjust with the weather; in summer the outdoor budget will be greater than in winter. This calculator uses the annual monthly average evapotranspiration rate of 4". For more information on how the District uses weather information please visit our weather page.
Disclaimer of Warranties / Accuracy of Data
Although an effort is made to assure the accuracy and completeness of the information provided on the Santa Margarita Water District (District) web site, the District makes no express or implied warranty as to the accuracy, adequacy, completeness, legality, reliability or usefulness of the web site's information. The District provides this information and all online services on an "as is" basis. While there may be changes to District information on topics covered on the web site, these changes may or may not be made available on the web site.
While the District uses reasonable efforts to provide accurate and up-to-date information, some of the information provided is gathered by third parties and has not been independently verified by the District. You agree that all use of these services is at your own risk, and that the District will not be held liable for any errors or omissions contained in the content of its services.
This simple calculator uses irrigable area to calculate an average monthly bill for residential lots. For the sake of this simple calculator, generalized irrigable areas for residential groups have been grouped as such:
Lot Size (sq.ft.)
Irrigable Area (sq.ft.)
0 – 4,000
4,001 – 8,000
8,001 – 15,000
15,001 – 50,000
This calculator also assumes a 30-day read cycle and uses historical average monthly evapotranspiration (a weather factor) to calculate outdoor budgets.