​​​​​​​Industrial Pretreatment

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1. Under wh​at authority does the city of Phoenix require a wastewater discharge permit?

• Chapter 28 of the city of Phoenix Code gives the Water Services Department specific authority to issue permits to control the quantity and quality of wastewater discharged to our sanitary sewer collection system. The entire Chapter 28 can be reviewed from this link:   Click here.

2. Does my business need a permit?

• See the flowchart at the Permitting Information link for an overview of permitting requirements.

• If you have any questions please contact us at 602-495-5926 or IPP.PlanReview@phoenix.gov.

3. What is the city of Phoenix permitting process?

• Refer to the Permitting Information link at:   Click here.

4. How long does the permit process take, and how long are permits valid?

• A business intending to start any new industrial discharge(s), or any additional industrial discharge(s) not already allowed under an existing permit, must apply for a new or amended permit at least ninety days prior to initiating such discharge(s) are issued permits.  Permits are valid for up to a five-year period.

5. What are 'one-time' temporary discharge permits, and how do I get one?

• One-time temporary discharge permits may be issued for the disposal of contaminated groundwater and other one-time discharges into the city of Phoenix sanitary sewer system.

• Requests for one-time temporary discharge permits must use the ​Discharge Request Form found at the following link:  Click here.  This should be submitted at least 10 work days prior to the requested dischard start date. Additional considerations may required up to 30 days' notice. 

• Email completed form to ask.water@phoenix.gov or fax to 602-534-7151.