Maricopa County Air Quality’s Open and Closed Solicitations are posted below. Please register or login to see details of all open opportunities.

In the spirit of continuous improvement and cost management, Maricopa County utilizes this bid system to post Request for Proposal (RFP) and bid opportunities. We strive to receive the best value for the goods and services purchased for the County’s needs. Maricopa County welcomes all vendors to register to the Arizona Purchasing Group. There is no charge to register, simply follow the registration path and select the "Limited Access" option. Maricopa County has a special arrangement where YOU WILL receive notifications of matching solicitations and addenda even when selecting the Free, Limited Access package.  To receive notifications Statewide, Federal or from other Purchasing Groups, select one of the other registration options or call the BidNet's Support Team at 800-835-4603 option 3 for assistance.