The Pretreatment Department sets forth uniform requirements for Users of the Publicly Owned Treatment Works (POTW) for the City and enables the City to comply with all applicable State and Federal laws, including the Clean Water Act and the Federal General Pretreatment Regulations (Title 40 of the CFR Part 403). 

General duties of the Pretreatment Department include, but are not limited to:

• The prevention of pollutants into the POTW and the stormwater system that will interfere with its operation. 
• The prevention of pollutants into the POTW and the stormwater system that will pass through the POTW and stormwater system, inadequately treated, into receiving waters, or otherwise be incompatible with the POTW and stormwater system.
• To protect both POTW and stormwater system personnel who may be affected by wastewater, sludge, and stormwater in the course of their employment, as well as the general public.
• To promote reuse and recycling of industrial wastewater and sludge from the POTW.
• To enable the City to comply with its NPDES permit conditions, sludge use and disposal requirements, and any other Federal or State laws to which the POTW and stormwater system is subject. 

Frequently Asked Pretreatment Questions: 

•  What is an Industrial User or Significant Industrial User?
  • An industrial user is any non-residential user that discharges non-domestic wastewater to the City of Sioux City's sanitary sewer system.  A significant industrial user (SIU) are permitted through the City's Pretreatment Program and discharges an average of 25,000 gallons per day or more of process wastewater, or contributes a process waste stream which makes up 5% or more of the average dry weather hydraulic or organic capacity of the treatment plant.  An industrial user may be designated as an SIU if there is a potential for adversely affecting the operation of the City's wastewater treatment plant. 

• What steps are required to be completed in order to be a regulated industrial industry?
  • If the industry meets the above definition of a SIU, they then must apply for a permit to discharge wastewater into the City of Sioux City's sewer system. The application must be filled out and returned to the Pretreatment Program located at 3100 S. Lewis Blvd, Sioux City, IA  51106. 

• What are some industries that require a wastewater review?

•  How long do I have in order to report a slug discharge or permit noncompliance?
  • Any permitted facility that experiences an upset in operations that places the facility in a temporary state of noncompliance with the provisions of either the permit or with chapter 13 of the municipal code, must immediately telephone and notify the Pretreatment Office of the incident.

• When are monthly self-monitoring reports or additional sample testing paperwork due?
  • Paperwork for permit monitoring or additional testing that is obtained at the designated sampling location must be received by the Pretreatment Department by the 10th of the month.  E-mailed copies are not acceptable for compliance.

• Where is the current rate structure for surcharge billing located at?
  • Guidelines and fee rates for the industrial surcharge program may be accessed through the City of Sioux City Municipal Code located here.   

Hauled Waste:

Any new hauler or industry requesting to discharge industrial waste, septic waste or grease traps to the WWTP must fill out a Hauled Waste Application before any loads may be hauled into the plant for disposal.  The information received from the application will allow the authority to determine whether the waste being hauled is acceptable to discharge at the WWTP.  When requesting to discharge at the WWTP:

• Completed Intent to Discharge Application with W9 of party responsible for payment
• Any lab data or testing results from the waste stream you are requesting to discharge
• A 1 liter sample of the waste requesting to be discharged
• Completed Hauled Waste Transport Application with Certificate of Liability Insurance

Remit all documents to:

Pretreatment Manager
cbell@sioux-city.org
Questions, please call 712-279-6987

Odor Control: 

To report an odor, please click on the following link or contact us directly by calling 712-202-3160 at any time. 

If the odor is in your home, the simple solution is to periodically pour water (one or two cups) into the drain to refill the trap. As a property owner, you are responsible for maintaining the private sewer line from the house to the city sewer main. If the odor continues in your home, you may want to reach out to a licensed plumber. 

REPORT AN ODOR HERE 

Frequently Used Forms:

• Application for Industrial User Permit
• Enforcement Response Plan (ERP)
• Hauled Waste Carrier Application
• Hauled Waste Disposal Form
• Pretreatment Chain of Custody Form
• Self Monitoring Template for Industries
• Septic Hauler Permit Application
• Slug Control Plan Template
• SPCC Requirements
• Title 13 Sewer Use Ordinance
• WWTP Discharge Policy