Sewer Plant

Waste Water Plant Profile

The City of London Wastewater Treatment Plant was constructed for treating all the wastewater generated by the citizens, businesses, and industries of the City, as well as several surrounding areas and in order to protect this vital natural resource of water. Skilled technicians, using sophisticated treatment processes, work around the clock in order to preserve and protect the local streams. The employees of the City of London Wastewater Treatment Plant invite you to enjoy our local water resource and to come tour our facility so that you can have a better understanding of the process of keeping our water clean.

london oh sewer plantMission Statement - The dedicated staff of the City of London’s Wastewater Treatment Department will safeguard the environment and public health by maintaining the highest level of treatment at the lowest attainable cost to our customers. This stewardship will be accomplished through sound fiscal management, the use of advanced technology, staff education and training, and the application of "Best Management Practices" of the industry.

The City of London Ohio Wastewater Treatment department located at 501 S. Main Street can be reached at (740) 852-0279. The Department is staffed by five dedicated employees; The Department operates and maintains the wastewater treatment facilities and the collection system comprised of approximately 44.9 miles of sanitary sewer lines and several sewerage pumping stations located throughout the collection system. The Department prides itself in professional standards and collaboration. In 2009 alone, the Department successfully treated over 743 million gallons of water and returned it to the environment for recreation and reuse for local streams and creek. 

The City of London wastewater facilities were originally constructed in 1936 in the existing location. The plant was upgraded in 1973 and 1986, and the latest upgrade was in December 2005.

The upgrade in 1986 expanded the plant to a 2.9 MGD design average with a peak flow of 3.8 MGD. In 2005, the plant expansion increased the design flow from 2.9 MGD to 5.8 MGD, with the peak flow to 17.1 MGD.

Industrial Pretreatment Program (IPP)

The purpose of the Industrial Pretreatment Program is to protect the City of London’s sanitary sewer system, the Wastewater Treatment Plant’s processes and equipment, and the Oak Creek from potential harmful discharges of pollutants from industrial and commercial sources. This is accomplished by regulating and monitoring the discharges from industrial and commercial sources to ensure that it meets the limits established.

london oh sewer ariationThe pretreatment program is mandated under the federal Clean Water Act and the U.S. EPA has delegated the program to Ohio for implementation. At Ohio EPA, the Pretreatment Unit is responsible for implementing the pretreatment program. Since local sewer control is best handled at the local level, Ohio EPA delegates program responsibilities to local governments, but also directly regulates industries when local government is unable to perform the role effectively or mandated to have an approved pretreatment program.

The authority of the Industrial Pretreatment Program can be found in chapter 1049 of City of London codified ordinance. Upon identifying a new industrial customer, this customer is sent an Industrial Waste Questionnaire to be completed and returned to the City for review. Upon completing the review of the Industrial Waste Questionnaire, an inspection may be scheduled for the facility. Once this process is complete, the City will determine if a discharge permit is required for the industrial customer.

If more information regarding the Industrial Pretreatment Program is desired, please contact Dan Leavitt at 740-852-0279 or email at