ADEQ: Arizona Department of Environmental Quality, Arizona's Official Web Site
Our mission is to protect and enhance public health and the environment
Water Quality Division: Permits: Aquifer Protection Permits (APP)

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General Information

You need to obtain an Aquifer Protection Permit, or APP if you own or operate a facility that discharges a pollutant either directly to an aquifer, to the land surface, or the vadose zone in such a manner that there is a reasonable probability that the pollutant will reach an aquifer.

  • See A.R.S. § 49-201(12) for statutory definition of discharge
  • A.R.S. §§ 49-241 through 49-252, and A.A.C. R18-9-101 through R18-9-403 for statutes and rules related to APP

The following facilities are considered to be "discharging" and require permits, unless exempted, or the director determines that the facility will be designed, constructed and operated so there will be no migration of pollutants directly to the aquifer or to the vadose zone:

  1. Surface impoundments, pits, ponds, and lagoons
  2. Solid waste disposal facilities, except for mining overburden and wall rock that has not been subject to mine leaching operations
  3. Injection wells
  4. Land treatment facilities
  5. Facilities adding pollutants to a salt dome, salt beds, or salt formations, drywells, underground caves, or mines
  6. Mine tailings piles and ponds
  7. Mine leaching operations
  8. Septic tank systems
  9. Underground water storage facilities (if wastewater-effluent is used)
  10. Sewage or wastewater treatment facilities
  11. Wetlands designed and constructed to treat municipal and domestic wastewater for underground storage

ADEQ issues both general and individual APPs. ADEQ will help you determine if the facility qualifies for a general permit or an exemption upon request.



There are currently 24 types of facilities specified under A.R.S. § 49-250 as exempt from requiring an APP. In addition, there are four class exemptions and two activities to which the program does not apply.


"Clean closure" means implementation of all actions specified as closure requirements in a permit and elimination to the greatest degree practicable, of any reasonable probability of further discharge from the facility and of exceeding aquifer water quality standards at the applicable point of compliance. Clean closure also means post-closure monitoring and maintenance are unnecessary.

  • Clean Closure Application -- (PDF)

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LEAN Effort

Since the mid 2000's, many environmental agencies have been using Lean continuous improvement philosophy to improve their operations and to more efficiently protect human health and the environment. Process improvements using Lean help agencies improve the effectiveness, efficiency, and transparency of their programs and services by identifying waste and by eliminating non-value added activities (e.g., waiting, rework, doing unnecessary work, handoffs).

In May, 2012, the Water Quality Division began process improvement efforts with the Individual Aquifer Protection Permit Program. In an exercise involving staff and customers, the permit process was examined in detail and non-value added process steps were eliminated.Additionally, tools that will assist customers in preparing complete applications and aid staff in condensing the time necessary to develop and issue permits have been developed and are described below.

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Individual Permits (A.R.S. § 49-241)

ADEQ encourages applicants to have a pre-application meeting to discuss issues relevant to permitting such as groundwater monitoring, design, operations, and closures. A pre-application meeting will help the applicant finish the Individual Permit Application and prepare supporting documentation (e.g., hydrologic review, BADCT documents, financial assurance demonstrations). A thorough, complete application may result in faster processing times and lower processing fees.

ADEQ developed a number of tools to assist both the applicant and staff such as application forms, meeting agendas and checklists. ADEQ encourages applicants to use checklists in preparing the application packet as staff will use the same forms when reviewing the application.

ADEQ offers an optional administrative completeness review (ACR) meeting where the project management team meets with the applicant to assess the completeness of the application packet. The Administrative Completeness Checklist will aid the applicant in preparing a complete submittal. At the end of the meeting, ADEQ will either accept the application as "administratively complete" or return it to the applicant with an explanation of the problems. Applications that are administratively complete will go to the substantive review phase. This may save 4-6 weeks of processing time.

To view the most updated permit applications, visit our new website at and

Applications, Checklists, Documents, and Publications
  Permitting Process Flow Chart
  Pre-Application Meeting
  Administrative Review Meeting Agenda
  Substantive Review Agenda
  Individual Framework
Checklists used by ADEQ Staff
  Hydrology Technical Review - WWTP, Mining, and Industrial
  Engineering Technical Review - WWTP
  Engineering Technical Review - Mining and Industrial
  Closure and Post-closure Plan and Cost Estimate Checklist
ADEQ Guidance Documents
  Blaney-Criddle   Spreadsheet (Excel)   Explanation and Use (PDF)
ADEQ Statutes and Rules
  Point of Compliance
  Aquifer Water Quality Standards
  Aquifer Protection Permit Rules (R18-9)

There are numerous requirements specified in 18 A.A.C. 9, Article 2, however, special attention should be paid to the following items:

  1. Best Available Demonstrated Control Technology (BADCT, pronounced "bad cat"). The applicant must show that the best demonstrated control technology will be used by the facility.
  2. The applicant must show that Aquifer Water Quality Standards (AWQS) will not be exceeded in the aquifer at the point of compliance as a result of discharge from the facility. If the level of a pollutant in the aquifer already exceeds the AWQS at the time of permit issuance, the aquifer must not be further degraded as a result of the discharge.
  3. The applicant must show that they have the financial and technical capability to operate in accordance with the permit.

Permit Duration

In most cases, individual permits are issued for the operational life of the facility.

Area-Wide Individual Permits (A.R.S. § 49-243(P))

Area-wide permits may be issued instead of several individual permits to cover facilities under common ownership in a contiguous geographic area. Discharge reduction in the pollutant management area and the demonstration that aquifer water quality standards will not be violated or further degraded can be evaluated collectively for existing facilities. This type of permit is most applicable to large mining and industrial sites with multiple discharging facilities. An applicant must complete an Individual Permit Application.

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General Permits

There are currently 45 general permits ranging from permits requiring department notification to permits authorized by simply meeting the criteria specified in rule.

Most permit conditions are listed under 18 A.A.C. 9, Article 3. However, A.R.S. § 49-245.01 and 49-245.02 list specific permit conditions for:

  • Facilities that manage stormwater regulated by the Clean Water Act
  • Certain vadose zone injection wells, subsurface discharges, and point source discharges to waters of the United States from man-made bodies of water associated with golf courses, parks and residential common areas containing groundwater, stormwater, reclaimed wastewater or a combination of these.

Types of General Permits

The following Type 2, 3, and 4 General Permits are available to download in PDF format.

  • Type 1 General Permits. No notification is required, however, best management practices (BMPs) must be followed to reduce or prevent the discharge of pollutants.

  • Type 2 General Permits require a Notice of Intent (NOI) and a Supplemental Notice of Intent
  • Type 3 General Permits require a Notice of Intent and a Supplemental Notice of Intent
  • Type 4 General Permits require a Notice of Intent

  • Agricultural General Permits. No notification is required; however, BMPs must be followed to reduce or prevent the discharge of pollutants.

General Permit Renewal and Permit Transfer

Type 2 and 3 general permits need to be periodically renewed (See Discharge Authorization Renewal Form below for details). Type 4 general permits are valid for the operational life of the facility.

Permit Renewal Forms

  • Type 2 Discharge Authorization Renewal Form (Revised June 2015) -- (PDF)
  • Type 3 Discharge Authorization Renewal Form (Revised March 2014) -- (PDF)

Permit Transfer Forms (to be completed by the buyer)

  • Notice of Transfer for a Sewage Treatment Facility operating under a 1.09 general permit -- (PDF)
  • Notice of Transfer for a Type 2, 3 general permit -- (PDF)
  • Notice of Transfer for an Onsite Wastewater Treatment Facility (Type 4.02 to 4.23 General Permits) -- (PDF)

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Notices of Intent (NOIs), Supplemental NOIs and Fees

Type 2 General Permits

  • Notice of Intent for Type 2 General Permits -- (PDF)
  • Supplemental NOIs
    • 2.01 General Permit for Drywells that Drain Areas Where Hazardous Substances are Used, Stored, Loaded or Treated -- (PDF)
    • 2.02 General Permit for Intermediate Stockpiles at Mining Sites -- (PDF)
    • 2.03 General Permit for Hydrologic Tracer Studies -- (PDF)
    • 2.04 General Permit for Drywells that Drain Areas at Motor Fuel Dispensing Facilities Where Motor Fuels are Used, Stored or Loaded -- (PDF)
    • 2.05 General Permit for Capacity, Management, Operation, and Maintenance of a Sewage Collection System -- (PDF)
    • 2.06 General Permit for Fish Hatchery Discharge to a Perennial Surface Water -- (PDF)
  • Checklists
  • Type 3 General Permits

  • Notice of Intent for Type 3 General Permits -- (PDF)
  • Supplemental NOIs
    • 3.01 General Permit for Lined Impoundments -- (PDF)
    • 3.02 General Permit for Process Water Discharges from Water Treatment Facilities -- (PDF)
    • 3.03 General Permit for Vehicle and Equipment Washes -- (PDF)
    • 3.04 General Permit for Non-Storm Water Impoundments at Mining Sites -- (PDF)
    • 3.05 General Permit for Disposal Wetlands -- (PDF)
    • 3.06 General Permit for Constructed Wetlands to Treat Acid Rock Drainage at Mining Sites -- (PDF)
    • 3.07 General Permit for Tertiary Treatment Wetlands -- (PDF)
  • Checklists
    • Type 3 Administrative Checklist -- (PDF)
    • 3.01 Checklist -- (PDF)
    • 3.02 Checklist -- (PDF)
    • 3.03 Checklist -- (PDF)
    • 3.04 Checklist -- (PDF)

    Type 4 General Permits - Engineering Review (ER) Program

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    Temporary Permits and Emergency Waivers

    Temporary Permits (A.A.C. R18-9-A210) and Emergency Waivers (A.R.S. § 49-251) are available under specific circumstances.

    Guidance and Forms

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    Related Statutes and Rules

    View state statutes relating to the Aquifer Protection Permit (APP) Program: Arizona Revised Statutes (ARS)

    • § 49-107 - Power and delegation of state authority
    • § 49-109 - Certificate of disclosure of violations; definition; remedies
    • § 49-111 - Permit application; plan approval; notice to counties, cities or towns
    • § 49-241.01 - Groundwater protection permit facilities; schedule; definition
    • § 49-242 - Procedural requirements for individual permits; annual registration of permittees; fee
    • § 49-243 - Information and criteria for issuing individual permit; definition
    • § 49-243.01 - Presumptive best available demonstrated control technology
    • § 49-244 - Point of compliance
    • § 49-245 - Criteria for issuing general permit
    • § 49-246 - Criteria for developing best management practices
    • § 49-250 - Exemptions
    • § 49-251 - Temporary emergency waiver
    • § 49-261 - Compliance orders; appeal; enforcement

    View state rules relating to the Aquifer Protection Permit (APP) Program: Arizona Administrative Code (A.A.C.)