Industrial Pretreatment



  • Water Protection Specialist
  • 1505 Sundog Ranch Rd

  • (928) 777-1615


The main objective of this EPA / ADEQ mandated program is to protect each of the following: the wastewater collection system, the wastewater treatment facilities and staff, surface waters and the groundwater, which receives recharge from the City of Prescott (COP) facilities. These goals will be achieved by permitting, monitoring, and sampling discharge from Industrial and Commercial users, in conjunction with educating industrial, commercial and residential users about substances that are harmful to the wastewater system and its processes. The Arizona Department of Environmental Quality (ADEQ) issued an official approval for the City of Prescott Pretreatment Program on October 1, 2013. We welcome your feedback via email to submit questions or comments about the Program.

The City of Prescott requests your help! We are conducting an on-going survey to help us understand the types of waste that are discharged into City sewers. This survey is a necessary component of the Pretreatment Program. The City requests that all businesses complete the Sewer Use Questionnaire. We suggest that you print out the .pdf document (below) that best fits your business type. Questionnaires may be emailed or completed online using the following link:  Take Online Sewer Use Survey. For the online survey, you must complete every question and click on “submit” at the end in order for the survey to be recorded. If you exit the survey or lose your internet connection, you will need to restart the survey and complete all questions from the beginning.

Survey User Questionnaires

Except for reporting required by the State and Federal regulatory agencies and specific information identified by public record disclosure laws, the City will not disclose any information that is provided in the Sewer Use Questionnaire to third parties.  Public support and participation will ensure that the City implements a pretreatment program that is representative of all businesses within the City’s service area. Thank you for taking the time to complete the sewer usage questionnaire. We greatly appreciate your participation. Please contact Water Protection at 928-777-1630 if you have any questions on the Sewer Use Questionnaire.


The General Pretreatment Regulations, Code of Federal Regulations 40 CFR Part 403, require the City of Prescott (City) to control wastewater discharges from significant industrial users (SIUs) through permits or similar means to ensure compliance with pretreatment standards and requirements. The regulations also specify that individual control mechanisms, in the form of Industrial Wastewater Discharge Permits (IWDP), be issued to SIUs and be enforceable by the City.
The City’s legal authority to issue an IWDP is described in City Code, Title II, Chapter 2-1, Section 2-1-65-2.  Each SIU is responsible for obtaining an IWDP from the City’s Public Works Director prior to discharging wastewater to the Publicly Owned Treatment Works (POTWs).


The Fats, Oils Grease (FOG) Prevention Program is derived from the City Code and is designed to integrate the use of Best Management Practices (BMP’s), grease interceptors, and regular maintenance of the interceptors to prevent FOG from entering the public sewer system.

BMPs for Fats, Oils Grease Prevention
FOG causes many problems in the sewer system and the FOG Prevention Program (FPP) helps outline strategies to reduce FOG problems. This prevents sewer overflows, prevents escalating sewer rates, assists in regulatory compliance, and protects the City from civil lawsuits and regulatory fines. The FPP protects the environment, improves the quality of life in Prescott, and guards the City’s liability.

Additional Information