Pima County Logo


Sabino CreekPima County Department of Environmental Quality (PDEQ), committed to providing effective and efficient service, is responsible for regulating and enforcing four major program established to protect and enhance our surface water and groundwater resources. These programs include Wastewater Systems, Drinking Water Systems, Stormwater Management (pollution prevention), and Private Well Monitoring near the TIAA Superfund Site.

PDEQ’s regulatory and enforcement authority is established pursuant to applicable provisions of the Arizona Revised Statutes, Arizona Administrative Code, Pima County Code, federal environmental statutes and by delegation of specified state functions and duties from the Arizona Department of Environmental Quality.

Special Notice: Starting June 20, 2016, PDEQ will begin a new procedure for invoicing plans received by the department for review. The updated plan review procedure affects submittals for sewer projects, water projects, and the approval of sanitary facilities for subdivision projects.

Special Notice: Starting July 25, 2016, PDEQ will only accept electronic submittals for water, sewer and Approval of Sanitary Facility projects. Applications must be submitted electronically in PDF format by either emailing all forms and plans to PDEQER@pima.gov, providing an FTP download link in the application email, or by having a USB flash drive or CD delivered to PDEQ’s office. Please note that the PDEQER inbox will only accept files less than 20 MB in size, so anything larger must be submitted using one of the alternate methods.

Drinking Water

Public Water Systems

PDEQ has the authority from Arizona Department of Environmental Quality (ADEQ) to enforce specific requirements of the Arizona Administrative Code (A.A.C.) Title 18, Chapters 4 and 5 relating to Public Water Systems (PWS).    A PWS is defined as a water system that serves 15 or more connections, or 25 or more people, for more than 60 days a year. PDEQ is responsible for approximately 180 PWS located in Pima County.

This authority enables PDEQ to review and approve PWS Plans, issue PWS Authorizations and Approvals to Construct, conduct inspections of certain PWS, and determine PWS monitoring and reporting compliance by the system operator.

Stormwater Management Program

Stormwater comes from rain flowing across the ground and pavement. The water can evaporate, seep into the ground or flow into pipelines leading to a wash. All substances flowing with the stormwater remain with the water and are never treated. The Stormwater Management Program keeps our stormwater clean by applying best management practices in homes and businesses such as construction sites and industrial facilities.

Well Monitoring at Superfund Site

PDEQ began the well monitoring program in 1994 at the request of the U.S. Environmental Protection Agency. The request was prompted by the Agency for Toxic Substances and Disease Registry to have private well-water quality data for a public health assessment. Initially 14 wells were sampled. Currently six private wells are operational and are sampled for trichloroethylene (TCE), chromium and 1,4-dioxane.
Follow UsShare this page

Department of Environmental Quality

33 N. Stone Ave., Suite 700
Tucson, AZ 85701

Phone: (520) 724-7400
Fax: (520) 838-7432

Department Home Page
Department News
Department Hours
Department Directory
Department Feedback Form
Report a problem
Department Calendar
Boards, Commissions and Committees
Rules and Regulations
Reports and Publications
Department Forms