California Affordable Quantity and Quality Water Resources Projects Act of 2003 - Amends the Federal Water Pollution Control Act and the Safe Water Drinking Act to increase the authorizations of appropriations for Environmental Protection Agency (EPA) conservation grant programs, including the national nonpoint source program, the state nonpoint source management program, state pollution control grants, state water quality cooperative agreements, the clean water state revolving fund, and the drinking water state revolving fund.
Authorizes expedited feasibility studies for 22 water projects in California. Requires the Secretaries of the Army and the Interior to give priority to studies that would provide environmental or other benefits, or examine the use of nonstructural or low-impact alternatives to achieving project goals. Lists required components of qualifying studies.