Superior Precast manufactures a full line of WI DSPS-approved precast concrete septic tanks in both standard and low-profile (LP) configurations. Our tanks are available in 1-compartment and 2-compartment designs to meet residential, commercial, and municipal requirements.
All tanks are manufactured to SPS 382-384, WI Administrative Code, and Chapters 145 and 160 standards... ensuring watertight construction and structural integrity for decades of reliable service. Custom tank production is available for projects that require non-standard sizing up to 40,000-gallons.
Tank Types
- Septic ... standard (47" and 50") and low-profile (37") models for residential and commercial systems
- Holding ... sealed tanks for properties without soil-based treatment
- Pump ... dedicated pump chambers for dosing and pressure distribution
- Septic/Pump ... integrated septic and pump chamber in a single unit, reducing installation time and site disruption
- Grease ... interceptor tanks for commercial food service applications
- Industrial & Chemical ... produced to exceed the unique demands of industrial environments
Available Models
Standard Tanks (1-Compartment) ... 600, 750, 1000, 1250, 1700, and 2100 gallon
Low-Profile Tanks (1-Compartment) ... LP650, LP750, LP940, LP1000, LP1250, LP1500, LP1700, LP2100, LP2500, LP3000
Standard Tanks (2-Compartment) ... 1000/600 and 1250/750
Low-Profile Tanks (2-Compartment) ... LP1000/600, LP1250/750, LP1800/1100, LP1500/940
Need a size we don't list? Custom tanks are available up to 40,000 gallons.
The No Number 2 Promise
If we don't have the tank size you need, we will upsize you to the next in-stock tank size at no additional charge.
Delivery
- Reduced delivery expense within our service area
- Service area covers Wisconsin, Minnesota, Michigan, and beyond... anywhere within a 12-hour delivery radius
- Tanks are delivered and set in place the same day
Why Precast Septic Tanks?
- Longevity ... precast concrete tanks last 40+ years with proper maintenance
- Structural strength ... resist soil pressure, groundwater, and traffic loads
- Watertight ... factory-controlled production ensures consistent quality
- WI DSPS Approved ... certified for code-compliant installations
