Willoughby Hills Sanitary Sewer System

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Willoughby Hills, Ohio

In an effort to mitigate existing Sanitary Sewer Overflows (SSO’s) the City of Willoughby Hills retained CT Consultants to develop a comprehensive master sewer plan for the west side service area tributary to Euclid Creek.  The City was required to develop the plan and implement measures to eliminate the SSO’s as part of the Satellite Sewer System Discharge Control Program (SSCDP). 

CT Consultants developed a comprehensive master sewer plan for the west side service area tributary to Euclid Creek.  The west side of the City of Willoughby Hills is predominately sewered and is transported via trunk sewer to the City of Euclid’s Wastewater Treatment Plant.  Willoughby Hills was required to develop a plan and implement measures to eliminate Sanitary Sewer Overflows (SSOs) in it’s sewer system as part of the Satellite Sewer System Discharge Control Program (SSCDP) and other requirements of Euclid’s NPDES permit.  The effort included SSES activities, flow monitoring, equipment and sewer inventories, population and flow projections, recommendations to correct three (3) sanitary sewer overflows  (SSOs) and related construction and project cost estimates.

The first phase of improvements included detailed design of construction documents for the construction of the Euclid Creek Interceptor (ECI) sewer.  The ECI sewer project totaled approximately 15,500 lineal feet and ranged in size from 15 to 18 inches in diameter at depths ranging from 5 to 25 feet deep with an average depth of about 18 feet.  The Euclid Creek Interceptor sewer was completed in early 2004 for a final construction cost of nearly $4,500,000. 

The second phase of the program, Euclid Creek Tributary Watershed – Assessment B Sewers included the design and construction of approximately 7.5 miles of gravity sanitary sewers and force main and two (2) new pump stations.  Assessment Area B was completed in 2007 at a construction cost of approximately $7.5 million.

The final phase of the Willoughby Hills sewer program, Assessment Area C was completed in 2012 and includes approximately 20,000 lf of sewer at a construction cost of approximatley $4.7 million.

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