Sanitary Sewer Program
Assessing Sanitary Sewer Priorities
The Sanitary Sewer Program is based on the 1985 Sanitary Sewer Master Plan and the City’s ongoing maintenance history and television scan (internal inspection) reports. With visual video images and written maintenance information, City staff identifies and assesses priorities of sanitary sewer projects needed to replace sections of the sewer system where the continued cost of maintenance of pipes and manholes would be greater than for replacement.
The Sanitary Sewer Program includes projects in two main categories: increased-capacity projects for lines identified in the master plan as under-capacity, and replacement projects for lines that have deteriorated past the reasonable point of repair. Planned capital improvement projects (CIPs) are intended to reduce infiltration and inflow of stormwater into existing sanitary sewers, reduce deficiencies in aging sanitary sewer collection systems, and build extra-capacity in the system (such as increase the size of underground pipes and manholes) to accommodate new development and redevelopment.
The 1985 Sanitary Sewer Master Plan and a subsequent master plan effort by Clean Water Services in 1995, are used by City staff to determine which projects are necessary to increase capacity of the sewer system to serve new development and in-filling by redevelopment of existing land. The 1985 Sewer Master Plan identified approximately 51,000 lineal feet of undersized sewer pipe.
The City Council has approved funding on a yearly basis for projects to correct the deficiencies identified in the master plan. By the end of FY 1998-1999, approximately 25,600 of the 51,000 total lineal feet of undersized pipe were replaced with properly sized pipe or pipe routing modified to increase system capacity. During FY 1998-1999, a total of 2,973 lineal feet of pipe were installed in this category.