The Operations Division maintains the sewer collections system that converys sewage from Springfield to the regional treatment plant. The Division responds to a wide variety of customer service requests each year. We inspect and clean the collection system to prevent blockages and issues under ground that could cause a pipe to break or collapse, making repairs as needed. Operations also works with the Environmental Services Division to address fats, oils and greases (FOGs), which can cause major backups. Operations updates the GIS maps and database.
The Operations Division maintains 225 miles of sanitary sewer lines, varying from 6" to 60" in diameter.
Maintenance activities include:
* Pipeline cleaning
* TV inspections
* Pipeline locating
* Manhole inspections
* Pipeline repair
* Smoke testing |
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Note:
* Residents are responsible for their private sewer line to the public right-of-way.
* The City is responsible for maintaining the collection system within the public right-of-way. |
Infiltration & Inflow (I & I)
Removing rainwater from the sewer system is important to reduce overflows at the regional treatment plant. Much of the excess water comes from downspouts, sump pumps and area drains improperly connected to the sanitary sewer. Flow monitoring and flow modeling provide measurements and data used to determine estimates of I & I. Flow meters are placed in various locations throughout the sewer collection system to take measurements and identify general I & I source areas. The City of Springfield completed a Sewer System Master Plan in 2008 which involved inspection of the sewer system using several methods to identify future rehabilitation projects. |
Repairing I & I Sources
Repair techniques include pipe patching and relining, manhole repair and replacement, disconnecting illegal plumbing, drains and roof downspouts. The City of Springfield has engaged in an active rehabilitation effort to reduce the entry of I & I into the collection system, including removing and replacing pipe that was more than 60 years old. |
