Norweco Singulair Green Fiberglass Tanks

Selvage Concrete Products is the north bay distributor for Norweco NSF40-rated residential Singulair wastewater treatment systems.


The Singulair Green aerobic treatment system incorporates Norweco’s advanced aerobic treatment process into a durable, watertight polyethylene tank.  It is ideal for new or retrofit applications and can be installed easily in the most difficult job-site with just a backhoe.  Incorporating patent-pending support ribs and inherently strong arch shape, the durable Singulair Green tank will provide decades of reliable performance. Designed for domestic wastewater flows up to 600 gallons per day, with treatment performance meeting or exceeding the strictest state and county requirements, Singulair Green is certified by NSF International.

Pretreatment Chamber
Wastewater enters at the Singular inlet and is equalized here as anaerobic bacteria and gravity precondition it.
Aeration Chamber
Wastewater enters at the Singulair Green inlet. Here, safe, living aerobic bacteria converts the wastewater into stable substances. Flow equalization maximizes this biological oxidation and assures 24-hour retention and treatment.


Clarification Chamber
Flow equalization the settling of biologically active substances inside the Clarification
Chamber. Wastewater has now been converted into clarified liquids in this chamber.
Bio-Kinetic System
Bio-Kinetic System combines filtration, setting, non-mechanical flow equalization, optional disinfection, adjustable outlet weir and optional dechlorination features into a single, revolutionary package.
Service Pro Control Center
Every Singulair System is installed with a Solid State Electrical Control Center. Each is equipped with Resettable Current Sensor, On/Off selector switch, Red Warning Light, Time Clock, Audible Alarm, Auxiliary Inputs and FCC Licensed Autodialed for Remote Monitoring and Individual Components.

‘Green’ Wastewater Tanks in Santa Rosa

Serving Santa Rosa, Petaluma, Vallejo, Napa, Novato, Rohnert Park, Fairfield & San Rafael