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Norweco offers a wide range of water and wastewater treatment products, systems and chemicals. The products are designed to provide a high level of treatment in the most efficient, cost-effective manner. The Norweco residential product line includes the precast concrete Singulair systems and HDPE Singulair Green systems, both certified by NSF. Singulair systems are a trouble-free answer to domestic wastewater disposal and insure a safe, sanitary home environment. They are easy to design, install and maintain, with a compact, efficient footprint. They are made in the USA, and are Build America, Buy America Act compliant. The systems are sold and serviced by local experts.

Singulair Green Low Profile System

Norweco’s Singulair Green low-profile system is engineered with 6-inch risers and features the innovative Model 225L aerator. The discreet low-profile design is visually pleasing and provides a solution for shallow installations.

Model 225L Aerator

The Model 225L Aerator is available for use in Singulair concrete and Singulair Green systems. The aerator features shorter brackets, a modified lifting handle and an updated aspirator shaft. Certified to ANSI and NSF standards, the Model 225L aerator is guaranteed to run cooler, cleaner, quieter and longer than any other air delivery system in the industry.

Singulair Green Integrated Chambers

Singulair Green is the strongest and most dependable high-density polyethylene tank in the industry. Norweco’s engineering team has enhanced the distinctive features of Singulair Green. The innovative design of the Green tank provides optimal treatment system functionality and allows for system expansion. The modified rib pattern, additional transfer ports and added connections provide interlocking capability for the integration of additional tankage upstream or downstream of the system. Options include a 520-gallon pump tank downstream with three optional plumbing package options. It supports low-pressure dosing, drip irrigation and spray irrigation. An integrated Bio-Film Reactor allows for additional treatment to exceed the most stringent regulations and effluent quality standards. It is a single-tank solution with uncompromised structural integrity.

Norweco is expanding again and focused on its commitment to its customers, product innovation and industry growth, now and in the future! The product is readily stocked and available to ship.


Norwalk Wastewater Equipment Company (Norweco) is an original equipment manufacturer of water and domestic wastewater treatment equipment and chemicals. Norweco was originally founded in 1906 as a manufacturer of sheet metal-jacketed wooden molds, used to produce concrete burial vaults. Molds were sold to distributors around the country, who were licensed to manufacture the “Norwalk Vault” in their local area. Additional mold designs were developed to produce septic tanks in the 1930s, aerobic treatment plants in the 1950s, and bomb shelters at the height of the Cold War in the 1960s. In the 1970s, the mold division, the precast concrete division and the wastewater treatment division were split into three separate companies. Today, we specialize in small-flow treatment applications, ranging from municipal treatment systems for small towns and villages, all the way down to systems for the individual family home. Our products are designed to provide a high level of treatment in the most efficient, cost-effective manner. From our corporate offices in Norwalk, Ohio, we serve a diverse customer base through our licensed distributors and dealers across North America and around the world. Throughout our 100-year history, Norweco has been a leader in product development, customer service and market expansion. Our commitment to growth, innovation and service is unmatched in the water and wastewater treatment industry.  We are proud of this record and point to our motto, “Progress Through Service Since 1906,” as our enduring commitment to our customers. Our creed, “Today’s Answer for the Protection of Tomorrow’s Environment,” is our pledge for the future.

800-667-9326 | email@norweco.com | www.norweco.com 

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