A yearlong project to rebuild an outfall jetty at Westchester County’s Mamaroneck Wastewater Treatment Plant that has a public walkway and is reachable through the village’s Harbor Island Park has been completed. The project cost more than $7 million. When it was first announced in May of 2022, the cost for the project was estimated at $6 million.
The county explains that the Wastewater Treatment Plant relies on a 60-inch diameter outfall pipe extending approximately half a mile into the Long Island Sound. Treated water from the sewage system is discharged into the Sound through that pipe. Initially constructed in the 1930s, the steel sheet piling jetty had experienced extensive corrosion, requiring fencing to restrict public access to a walkway extended over the water. The pedestrian walkway on top of the jetty had deteriorated, creating health and safety concerns.
The rehabilitation project began in September 2023. In addition to restoring the structural integrity of the jetty, it reopens walkways, benches, and viewing areas for public use. The county coordinated with the Village of Mamaroneck on the project.
“Completing this rehabilitation project underscores our dedication to infrastructure resilience and community well-being,” Westchester County Executive Ken Jenkins said. “By investing in the long-term protection of the outfall system and revitalizing public space, we are enhancing the quality of life for Westchester residents while ensuring our wastewater facilities continue to operate safely and efficiently.”
The county’s Department of Public Works Commissioner Hugh Greechan said, “Rehabilitating a structure that plays such a pivotal role in wastewater treatment operations and public recreation required exceptional coordination and planning. This project represents a major step forward in ensuring the longevity of the Mamaroneck Wastewater Treatment Plant’s operations while preserving valuable public amenities.”
