1250 Gallon Low Profile 500 GPD ATU System

SKU
N-45536
Manufacturer Part
45536

Norwesco Advanced Treatment Unit Low Profile Septic tank FL Approved to be used with BioMicrobics MicroFAST 0.4 unit (sold separately under SKU WF-MICROFAST0.4). 

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1250 Gallon Low Profile 500 GPD ATU System

Norwesco Advanced Treatment Unit Low Profile Septic tank FL Approved to be used with BioMicrobics MicroFAST 0.4 unit (sold separately under SKU WF-MICROFAST0.4). 

The Texas-Bundled 1250 Gallon Low-Profile 500 GPD ATU Septic System is the premier large-capacity solution for residential wastewater treatment across Texas. Built for properties requiring expanded hydraulic capabilities, this unit bundles a robust 1250-gallon low-profile polyethylene tank with the BioMicrobics MicroFAST Flex 0.5 biological insert. Operating as an efficient two-compartment active plant, it breaks down organic waste effortlessly using anchored microbe colonies that survive heavy home usage spikes. Its ultra-shallow burial requirements reduce soil disruption and installation time, ensuring smooth permitting and lightning-fast TCEQ compliance.

Key Features and Benefits:

• Daily Treatment Capacity: 500 Gallons Per Day (GPD)
• Internal Configuration: 2-Compartment (Settling Zone + Aerobic Zone)
• State Regulatory Approvals: Texas TCEQ Compliant (Class I Aerobic Standards)
• Environmental Certifications: NSF/ANSI Standard 40 & Standard 245
• Tank Material / Structural: Rotationally-Molded, Seamless Polyethylene
• Inlet / Outlet Dimensions: 4" Sanitary Tees Installed
• Access Openings: Dual 20" Manhole Openings
• Manufacturer Warranty: 5-Year Limited Warranty on Tank

Engineered to support larger residential properties up to 4 Bedrooms and/or up to 3,501 sq. ft. of total living space.

What’s Included in the Complete System Bundle

[x] 1250-Gallon Norwesco Low-Profile 2-Compartment Polyethylene Septic Tank (N-45536)

[x] BioMicrobics MicroFAST Flex 0.5 Attached-Growth Media Insert (WF-600-FINFMCF0.5)

[x] High-Volume 1/3 HP Above-Grade External Air Blower & Weatherproof Protective Hood

[x] Smart Control Panel with Integrated Audio/Visual Diagnostic Alarms

[x] Complete Watertight Air Line Seals, Observation Gaskets, and 4" Outlet Assemblies

The complete unit complies with NSF 40 and NSF 245 for the use in FL. 

Burial depth up to 3 ft.

Disclaimer: Tank is for below ground use only.

Dimensions
Length 157"
Width 60"
Height 51"
Weight 590lbs
Inlet 4
Outlet 4"
Lid Size 20"
Key Specs
Manufacturer Norwesco
Color White
Gallon Capacity 1250
Material Polyethylene
Max Temperature 130 F / 54 C
Certifications & Compliances IAPMO Approved
Warranty 5 years
Disclaimers Norwesco Florida Only septic tanks can only ship into Florida or be picked up at the Lake Wales, FL manufacturing facility
Shipping Height 51"
Shipping Length 157"
Shipping Weight 590lbs
Shipping Width 60"
Ship Class OVS
NMFC Code 156600-02