Do I need a permit?
 

The Industrial Pretreatment Section uses the following criteria to determine if your facility will need a discharge permit.  This criteria can be found in Mesa City Code and the Federal Code of Regulations, Part 403.

• Your facility is subject to any categorical standard.
  
  
• Contributes a process wastewater that makes up five percent or more of the average dry-weather hydraulic capacity of any of the treatment plants.
  
  
• Discharges an average of 25,000 gallons per day or more of process wastewater, excluding sanitary wastewater and boiler blowdown.
  
  
• Designated by the Utilities Manager upon a finding that the facility has a reasonable potential for adversely affecting Mesa's treatment/collection operations or violating any pretreatment standard or requirement.
   
• Discharges any pollutants from groundwater that is subject to a remedial action plan that has been approved by an appropriate regulatory agency.
   
• Discharges any substances defined in Mesa City Code Title 8, Chapter 4, Section 15.
   
• Has a discharge that is either domestic in nature, or has no discharge at all, but such facility does have significant quantities of pollutants that, if discharged, would be regulated.