NuWater BNR Wastewater Treatment System
Advanced aerobic treatment by Enviro-Flo, Inc. — NSF/ANSI certified, Class 1 effluent quality for residential and commercial properties.
The Environmentally Friendly Alternative for Wastewater Treatment
The NuWater BNR is a single-tank aerobic treatment system that uses the extended aeration activated sludge process to treat domestic wastewater. It consistently meets or exceeds Washington State's discharge standards, producing effluent that is clear, odorless, and low in nutrients.
Available in 500 and 600 GPD capacities for Washington State, the system is constructed in concrete or polyethylene and is approved for both residential and commercial use. It has been independently tested and certified to ANSI/NSF Standards 40 and 245.
How the NuWater BNR Works
Three integrated compartments work together to produce high-quality treated effluent through a continuous biological process.
Pre-Treatment Chamber
Large solids are separated from incoming wastewater. Re-circulated water from the clarifier returns here to continue the nutrient (nitrate) reduction process.
Aeration Chamber
Air is pumped in through low-pressure diffusers creating microscopic bubbles. This promotes the growth of aerobic microbes that break down organic solids in the wastewater.
Clarifier Chamber
Calm conditions allow solids to settle and separate. Treated water is discharged; settled microbes and solids are recirculated back to the aeration chamber for further treatment.
System Specifications
NuWater BNR Maintenance by Blackwater Services
Washington State law requires all advanced treatment system owners to maintain a certified service provider for the lifetime of the system. Blackwater Services is your authorized NuWater maintenance provider — handling all required inspections, reporting, and repairs.
- Aerator filter cleaning & inspection
- Diffuser & air line inspection
- High water & low air alarm testing
- Effluent quality visual inspection
- Sludge level measurement
- State compliance reporting
- Component repair & replacement
- UV disinfection system service (Treatment Level A)
Maintenance is Required by Law
Under Washington State regulations, aerobic treatment systems must be serviced at minimum annually, with maintenance records submitted to the permitting authority. Blackwater handles all of this for you.
Schedule Your NuWater Service
Call us today to enroll your NuWater BNR system in a maintenance plan.
(425) 777-4545NuWater BNR FAQs
What is the NuWater BNR system?
The NuWater BNR is an advanced aerobic wastewater treatment system by Enviro-Flo, Inc. It uses extended aeration and activated sludge to treat household wastewater to a Class 1 standard — producing clear, odorless, low-nutrient effluent.
How does the treatment process work?
Wastewater flows through three chambers: pre-treatment (solids separation & de-nitrification), aeration (aerobic microbe digestion), and clarification (solids settle, treated water is discharged, microbes are recirculated). The result is clean effluent meeting state discharge standards.
Why does a NuWater system require maintenance?
Washington State requires ongoing maintenance contracts for all advanced treatment systems. The aerator runs 24/7, and components like filters, diffusers, and alarms must be inspected regularly to ensure proper treatment and regulatory compliance.
What routine maintenance does the NuWater BNR need?
Every service visit includes cleaning the aerator filter, testing alarms, checking diffusers and air lines, measuring sludge levels, and inspecting effluent quality. Blackwater Services handles all of this as your certified maintenance provider.
What should NOT go into a NuWater system?
Avoid strong disinfectants/bleach, oils and grease, water softener discharge, disposable wipes/diapers, and high-phosphate detergents. These can harm the microbial population and reduce treatment effectiveness.
Does Blackwater service NuWater BNR systems?
Yes. Blackwater Services is an authorized NuWater maintenance provider serving Snohomish, Skagit, Island, and King Counties. We handle inspections, repairs, aerator service, and all required compliance reporting.
Have a NuWater BNR System?
Blackwater Services is your certified NuWater maintenance provider. Call us to schedule service or enroll in a protection plan.
No obligation. Licensed & insured. Serving Snohomish, Skagit & Island Counties.