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The entrance to Mashta Island.
The entrance to Mashta Island.
Miami-Dade's Water and Sewer Department took nearly seven months to upgrade the sanitary sewer lift station on Key Biscayne's Mashta Island. This vital infrastructure project also includes road, sidewalk and landscape beautification efforts around that area.
On October 3, officials from WASD and the Village attended a ribbon-cutting ceremony at the site.
The purpose of the lift station (at Pump Station 137) is to collect all of the gravity sanitary sewer and then convert it into a pressurized system straight into the County's local treatment plant, said recently appointed Key Biscayne Public Works Director Chris Miranda.
This infrastructure improvement is part of WASD’s ongoing $8.6 billion Capital Improvement Program efforts to modernize the County’s sewer system and enhance service reliability for residents.
The upgrade includes the installation of two new submersible pumps, upgraded piping, and an elevated flood-resistant control panel. These will significantly boost the system’s capacity, resilience and reliability, especially for those residents on Mashta Island.
“We appreciate WASD’s teamwork that ensured the project was a success from start to finish,” Village Manager Steve Williamson said. “The enhancements at Pump Station 137 represent significant progress and careful planning for the future, allowing this pump station to continue operation, even during severe flooding events. This project highlights the strong partnership between the Village of Key Biscayne and Miami-Dade County."
Gravity sewer systems, different from force mains, are a network of underground pipes sloped downward and away from the source. They use gravity to move raw wastewater to a regional wastewater treatment plant.
A gravity sewer includes both black water (fecal matter from bathrooms, grease from sinks and brown sewage) and gray water (from washing machines, for example).
The lift station is a type of pump station that transports the wastewater from a lower to higher area without digging deeper than 10 feet on a site for the sewer line.
With the successful completion of these upgrades, the focus now shifts to the long-term benefits that these improvements will bring to the community.
“This successful collaboration between the County and the Village is a model for building sustainable infrastructure that meets both current and future needs,” Key Biscayne Mayor Joe Rasco said. “The improvements to Pump Station 137 are vital for long-term resilience and provide flexibility for residents’ property uses.”
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