Groundwater
Colorado River
Treated Wastewater
Other Surface Water
80%
17%
2.9%
1993
Total Volume (Acre Feet):280,496
40%
54%
5%
0.6%
2019
Total Volume (Acre Feet):303,509
Note: The Central Arizona Project, which brings Colorado River water to Tucson, was declared substantially complete in 1993.