Activities of the Wastewater Collection Maintenance Division are supported by the Sewer Fund as a part of the sewer utility bill. The goal of this organization is to insure the uninterrupted flow of wastewater in order to protect the city’s populace from water bourn disease exposure and toxic contamination.
All wastewater generated within the City of Westerville is treated by the City of Columbus or the Delaware County Sewage District by contractual agreement. The City of Westerville is involved in cooperative efforts with these two agencies for an Industrial Pre-Treatment Program.
Waste Water Collection System Maintenance
The Department of Public Service schedules internal inspection of the Waste Water System by use of closed circuit cameras. The tapes of these inspections are reviewed and the findings are cataloged. Any needed repairs are made from the findings from the tapes.
Every manholes structure (3109) is inspected two times a year. The inspection is performed to check flow levels and sewer conditions. Many partial blockages to the sewer system are found and removed prior a full stoppage of the flow.
Every section of pipe 12 inch and smaller is cleaned once a year.
The lift station at Mariners Cove is inspected monthly under a contract with EC Babbert Inc.
The Department of Public Service has taken on the responsibility for maintaining a GIS mapping program for the Water Distribution, Waste Water Collection and Storm Water Collection Systems. One full-time and one part-time employee are assigned to input information to the base maps as the system is improved or when new areas are added. These maps are updated as the changes are accepted by the City. Maps are updated on the City’s internal mapping system on a quarterly basis.
As a part of the GIS mapping program and the management of daily activities records are kept for all activities to maintain the infrastructure of the City. A work order program is in place and is utilized to track all of these activities. Reports can be generated to indicate cost of maintenance. The records can be used to develop future maintenance programs. Maintenance Records of all assets are tracked on a regular basis.
The City of Westerville is in contract with the Franklin County Board of Health to inspect storm water outfalls for illicit discharges. If a discharge indicates a potential waste water contamination follow up work is performed to determine the source of the problem. The Department of Public Service works with the property owner involved to ensure a proper connection is installed to the collection system.
As a part of the City of Westerville contract with the City of Columbus industrial pre-treatment is perform by Columbus. The City of Westerville will provide cooperative effort on an as need basis.
Sanitary Sewer Overflows
In 1977 the City of Westerville received a Federal Government Grant to upgrade the Waste Water Collection System. Two collector sewers were installed and the existing system was upgraded. As a part of that program all known overflows are permanently blocked. To date, no additional overflows have been found.
The capacity of future extensions to the waste water collection system is established by the size of the piping system in place and the ability of the Treatment Facilities to handle the additional loads. The owners of the treatment facilities are included in the plan review process for any new developments which are tributary to their collection systems.
Presently there are no areas of the City of Westerville collection system that are operating at design capacity.