The Maricopa County Voluntary Vehicle Repair and Retrofit Program has been suspended due to current economic circumstances that have resulted in a loss of funding for the Program. While the Program is unable to provide financial assistance for vehicle emission repairs, the Air Quality Department recommends that the necessary repair work be completed by ASE (Automotive Service Excellence) certified professionals at an Arizona Green Business repair facility. From its introduction in January 1999 through June 2009, the Voluntary Vehicle Repair and Retrofit Program had been funded by the State of Arizona. From July 2009 through November 2010, the program was funded by an Energy Efficiency and Conservation Block Grant from the U.S. Department of Energy. The Program provided monetary assistance to qualifying owners of older, high-emitting vehicles that had failed a required emissions test. Over the years, the program helped over 11,700 vehicles meet Arizona emissions standards, resulting in the reduction of over 2,100 tons of pollution.

During a fiscal year, employment sites are processed by the Trip Reduction Program. The TRP produces a detailed statistical summary report for each employment and student site. In addition, the TRP Task Force, along with the TRP staff, reviewed and approve Trip Reduction plans. The report tracks and analyzes the commuting habits of employees and students in Maricopa County.

Maricopa County experiences exceptionally high temperatures that contributes to a high number of deaths. To track these deaths, the Maricopa County Department of Public Health created a novel and effective approach for surveillance of heat-associated deaths and has continued to use this system annually. The enhanced heat surveillance season usually begins in May and ends in October.

Provides health status information for cities and towns in Maricopa County recognized by the U.S. Census Bureau. This includes both incorporated and unincorporated cities and towns with a population of at least 1,000 people at the time of the 2000 U.S. Census. It includes data for 76 diseases and health indicators as well as information on the size and age distribution of the population.