Rapid Infiltration Basins
Mandated to eliminate wastewater stream discharge for compliance with the Inland Bays Total Maximum Daily Load, The Town of Millsboro embraced an innovative solution based on recycling, rather than disposal, of high quality treated effluent. The recycled water is used to recharge the local aquifer through seven rapid infiltration basins (RIBS). With a capacity of 1.2 MGD, Millsboro’s RIBs are the largest municipal system in Delaware. RIB systems require less land and have lower long term operating costs than wastewater disposal systems using irrigation. Hydrogeological testing has demonstrated that the performance of Millsboro’s RIB system exceeds the original design criteria.
Client
Town of MillsboroLocation
Millsboro, DECapability
SustainabilityCivil Infrastructure
Services
Water & Wastewater DesignRelated Projects
The City of Philadelphia was more progressive than most older northeastern cities when addressing confined sewer overflow issues that are typical of aging and outdated underground infrastructures. Instead of the usual downgradient treatment plants, they decided to capture and infiltrate rainwater near the source, thereby mitigating flows into the already full sewers which were leaking into their streams and rivers. Such an undertaking relies not only on one big project, but on a multitude of smaller successes. Verdantas has been working with the City for over a decade, initially in reviewing private sector plans for upgrading detention and infiltration opportunities, to working with the City for the identification and design of City projects for the same purpose.
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Sustainability | Civil Infrastructure
PWD Green Stormwater Infrastructure Design
Green stormwater infrastructure design for the City of Philadelphia Water Department