Lagoon Ridge Low Pressure Sewer & Advanced Treatment System – Oak Bluffs, Maine
Overview
Lagoon Ridge is an 18-home residential development located in Oak Bluffs, Massachusetts on Martha’s Vineyard. The community required a wastewater solution capable of meeting strict nitrogen discharge limits of less than 5 mg/L, a common regulatory requirement in sensitive coastal and estuarine environments such as those found on the Vineyard. A gravity sewer system was not feasible for this development, making a low pressure sewer collection system paired with an advanced treatment plant the ideal approach.
Each of the 18 homes is equipped with an individual Environment One (E/One) grinder pump station that conveys wastewater through a shared 2-inch force main to a centralized advanced treatment facility, an Amphidrome® System. The system is designed to handle estimated flows of approximately 6,100 gallons per day while achieving the nitrogen reduction levels required by the project’s discharge permit.
E/One Sewer Systems Distributors for Upstate New York and New England.
E/One grinder pump stations and control panels serving Lagoon Ridge homes.
E/One grinder pump stations and control panels serving Lagoon Ridge homes
Amphidrome System
E/One Panel
E/One grinder pump stations and control panels serving Lagoon Ridge homes
Amphidrome System
Treatment field area serving the Lagoon Ridge development
The Solution
The development utilizes an E/One Low Pressure Sewer (LPS) system to efficiently collect and transport wastewater from each residence to a centralized Amphidrome advanced treatment system. The Amphidrome provides biological nutrient removal capable of achieving effluent nitrogen concentrations below the required 5 mg/L threshold, a critical performance standard for protecting the nitrogen sensitive coastal waters surrounding Martha’s Vineyard.
Each home’s E/One grinder pump station handles residential wastewater flows and pumps through the shared 2-inch force main network. This small-diameterpiping approach significantly reduced excavation requirements and infrastructure costs compared to a conventional gravity collection system, while delivering dependable wastewater conveyance across all 18 lots.
Results
The Lagoon Ridge project demonstrates how the combination of E/One Low Pressure Sewer technology and Amphidrome advanced treatment can deliver both reliable wastewater conveyance and high-performance nitrogen removal in a coastal residential setting. By utilizing individual grinder pump stations and a shared force main, the system avoided the cost and disruption of conventional gravity sewer infrastructure while meeting the strict environmental standards required for discharge on Martha’s Vineyard.
The result is a cost-effective, environmentally responsible wastewater management solution purpose-built for the nitrogen-sensitive coastal environment of Oak Bluffs, protecting local water quality while reliably serving the 18-home Lagoon Ridge community.
