Environmental Department

Main Office: 435-716-9755
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Logan City Environmental
153 N 1400 W
Logan, UT 84321

Wastewater Treatment & Pretreatment


Wastewater TreatmentSewage Lagoons

The Environmental Department operates a regional wastewater treatment plant which consists of 460 acres of lagoons, and 240 acres of wetlands to treat and further polish the wastewater. The treatment plant receives approximately 13 million gallons per day as an annual average. The sources of the wastewater received include wastewater from residences, businesses and large industries.

Our wastewater treatment system services the communities of:

  • Logan
  • Smithfield
  • Hyde Park
  • North Logan
  • River Heights
  • Providence
  • Nibley
  • Utah State University

Logan City is in the process of updating the lagoons to a mechanical plant in order to accommodate more stringent ammonia and phosphorous standards as well as future total nitrogen limits. At this time, the City hopes to have construction completed and the plant operational by the end of the year 2020. To view the most current master plan see below. For any questions regarding this project please contact Jim Harps at 435-716-9797.

WWTP Master Plan
2016 Master Plan 

2010 TMDL Study

The State of Utah Division of Water Quality concluded the Bear River/Cutler Reservoir TMDL study in 2010. This study is the reason for our new phosphorous discharge limits and our treatment facility upgrade. Please feel free to look at the completed study.

2010 TMDL Study

Logan City & USU Partnership
Logan City's Environmental Department and USU's Sustainable Waste-to-Biproducts Engineering Center have partnered to research ways to better deal with our solid waste and wastewater. Be sure to check out the website that details this partnership.  http://swbec.usu.edu/

Click here to see a video about how Biological Engineering students and faculty at Utah State University transform wastewater into biofuels and other bio-products:



About Pretreatment Regulations
The first pretreatment regulations were established in 1972 under the Federal Water Pollution Control Act and in 1977 under the Clean Water Act. These regulations set forth standards mainly for the protection of publicly owned treatment works (POTW). In 1978, the U.S. Environmental Protection Agency (EPA) developed the General Pretreatment Regulations which established mechanisms and procedures for use by state and local pretreatment programs.

Purposes of the Pretreatment Program

  • Regulate the disposal of wastewater into the sanitary sewer system.
  • Protect the physical structures of the collection system and the safety of operation and maintenance personnel of the wastewater collection system.
  • Protect Logan City wastewater treatment facility and the receiving water.
  • Comply with all the federal, state and local pretreatment regulations assure the health and safety of the public and the environment.

Permitted Businesses
Categorical businesses (as listed in 40 CFR regulations), Significant Industrial Users (as defined in 40 CFR regulations), Restaurants, Auto Repair shops, Car washes, Auto-body Shops, Radiator Shops, Hospitals, Clinics, Dental Offices, Photo Processors, Labs and other such business. These types of business should apply for a Wastewater Discharge Permit from Logan City pretreatment program and the permit will be renewed annually. Permitted industries are also subject to quarterly or monthly inspections, sampling and reporting as required in their permit. The purpose of inspection is to obtain information concerning operations, water usage, waste disposal methods, waste streams, chemical usage and storage, spill control and any other pertinent information.

Enforcement Response Plan
If enforcement is necessary, the City will follow their Enforcement Response Plan (ERP) for all pretreatment users. A copy of the ERP is available for review by calling Jim Harps at (435) 716-9797 or by coming to the Environmental Department Building at 153 North 1400 West in Logan.