Where does the city's water go? This chart shows us how much water is used in each of the city's consumer classes between 1985 and 2014*. Since 2007 single-family residential demand has fallen from 261,530 Af to 208,678 Af. Multi-family residential has fallen from 187,059 to 169,192. More importantly, Residential per capita has fallen from 106 gallons per capita daily to 86. *Supply shown in 'water years' (October thru September).