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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 Onsite Wastewater Treatment Facilities (septic systems), Public Water Systems, Sewer Collection Systems, Approval of Sanitary Facilities for Subdivisions and Stormwater Management.

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.

Public Water Systems (Drinking Water)

PDEQ, acting in accordance with delegated authority from the Arizona Department of Environmental Quality (ADEQ), enforces specific requirements of the Arizona Administrative Code Title 18, Chapters 4 and 5 relating to monitoring and reporting requirements, construction, and operation requirements for a Public Water Systems (PWS).

A PWS is defined as a water system which serves 15 or more connections, or 25 or more people, for more than 60 days a year. There are approximately 180 PWS in Pima County that PDEQ is responsible for conducting plan reviews and approvals for construction projects, sanitary surveys, and enforcing the monitoring and reporting requirements to ensure the construction and operation of the PWS is in accordance with ADEQ's Safe Drinking Water rules.

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.
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Department of Environmental Quality

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

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

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