NEORSD Local Sewer System Evaluation
NEORSD SWI-LSSES (Executive Summary from Final Community Report dated February 2022)
The Northeast Ohio Regional Sewer District (District) completed the Southwest Interceptor-Local Sewer System Evaluation Study (SWI-LSSES) as the third of four regional SSES projects to address sewer infrastructure problems that adversely affect human health and the environment. The LSSES projects are large-scale planning studies using hydraulic modeling and traditional Sewer System Evaluation Survey tools such as dyed water testing, sewer televising and smoke testing to identify existing sanitary sewer system problems and potential solutions in prioritized areas. Typical problems include sanitary sewer overflows (SSOs), sanitary sewer system basement backups (BBUs), common trench sewer crossflows, illicit discharges to separate storm sewers, and failing home sewage treatment systems (HSTSs, or septic tanks).
The LSSES projects provide technical guidance to the member communities in the form of Community Reports and ArcGIS Online (AGOL) information. The Community Reports summarize reported and projected problems, solution alternatives considered, and feasible sewer system improvements that may be implemented by the communities, either on their own, or with District assistance, if available, via the Member Community Infrastructure Program (MCIP) to address system problems. The LSSES projects also considered related sewer system policy, operations, and maintenance issues.
The SWI-LSSES area was divided into two parts to prioritize areas with the most severe problems and to balance field activities, such as flow monitoring and system physical inspection, for model development. Sewer system monitoring, inspection, modeling, and problem analysis of the second phase of the study area, which included the City of Berea, was conducted in 2019 and 2020 to produce this report and supporting information.
This report summarizes potential solutions to mitigate reported and projected problems. Sewer system improvements and infiltration/inflow (I/I) reduction measures may include sewer system rehabilitation, sewer separation/replacement, flow redirection, capacity improvements, inline storage, and I/I reduction improvements on private property. Please find links to the community report and attachments below: