Septic
Certified Septic Tank Systems
State-Approved Septic Tanks for Long-Lasting Performance
Whether you’re installing a new onsite wastewater management system or replacing an old one, choosing the right septic tank is essential. Our state-approved septic tanks are engineered for durability, efficiency, and long-term performance. With a wide selection of single-compartment, two-compartment, and above-ground tanks, we provide solutions for residential, commercial, and specialized applications.
Septic Tank Type View All
A budget-friendly option, ideal for greywater, non-potable water or other applications without the need for 2 compartments.
Our most popular choice, offering enhanced wastewater treatment and improved system efficiency. The two chamber tank has a baffle to separate solids more effectively.
Ideal for temporary or mobile setups like campsites, construction sites, and remote locations. These low-profile septic tank types come in 200-500 gallon capacities.
Ideal for storing and pumping effluent to leach fields. Can be used as a holding tank or pump tank. Works well for small cabins or properties with infrequent use.
Versatile for septic storage, potable and non-potable water storage, and rainwater collection, available in sizes up to 10,000 gallons to serve homes, businesses, and agricultural properties.
Find everything you need to complete your septic system with our selection of high-quality drainfield accessories. From distribution boxes to leach chambers, we offer durable septic components.
Septic Accessories View All
Drain Field View All
Septic Tank Size Calculator
Use our easy-to-use Septic Tank Size Calculator to determine the ideal tank capacity for your septic project.
Disclaimer: This calculation is an estimate, please consult with your local designer/installer or local county for accurate tank size in your area.
**We are assuming an average of 2 people per bedroom, with an average wastewater generation of 75 gallons per person.
or
Request a Quote
Why Trust Tank Depot with Your Onsite Wastewater Managements
✔ Expert Recommendations
Our team will assess your needs and suggest the most suitable tank size, material, and features to meet local regulations and project demands.
✔ Time Savings
Instead of searching through multiple options, our form helps streamline the process, delivering a quick and accurate estimate based on your project details.
✔ Compliance & Customization
Ensure your septic system meets state and local codes while also receiving options for custom modifications to fit your site-specific requirements.
✔ Expert Support
Filling out the form connects you directly with our septic specialists, ensuring faster responses and dedicated assistance throughout your project.
How to Get Your Septic Tank in 4 Easy Steps
Getting the right septic system has never been easier.
Get expert guidance on selecting the ideal septic tank for your home or business.
We offer nationwide delivery and pickup at our 14 store and vendor locations.
Need a Septic Tank Installation?
We’ve got you covered. We service the following counties in TX:
Bexar, Kendall, Comal, Guadalupe, Wilson, Atascosa, Medina, Travis, Williamson, Hays, Bastrop, and Caldwell.
Choose Dedication to Dependable Septic Solutions
With over 20 years of experience, we are a trusted provider of high-quality, state-approved septic tanks built for strength, efficiency, and longevity.
Exceptional Durability
Built with premium materials like polyethylene, steel, and fiberglass, our tanks are designed to handle tough environments and last for years.
Premium Septic Tanks, Best Value
Tank Depot’s septic tank pricing that ensures you get the best value for your investment. Our direct-to-customer approach and nationwide store locations help keep costs lower.
Expert Guidance
Our team guides you in finding the optimal septic system solution for your project based on soil conditions, household size, and regulatory requirements.
Built for Strength & Longevity
Our septic tanks are designed with structural ribs for enhanced durability, ensuring a lifespan of 20+ years.
Easy Installation & Lower Costs
Our tanks are lightweight yet robust, allowing for easier installation without the need for heavy machinery.
3-Year Warranty
Every septic tank we sell is backed by a 3-year manufacturer’s warranty, ensuring reliability and peace of mind.
Certified & Compliant
Our septic tanks meet state requirements, ensuring compliance with health and environmental standards.
Eco-Smart Design
Built to protect groundwater and reduce leaching, our septic systems support long-term environmental health.
Not sure which tank is right for your project? Contact us today for expert guidance.
Featured Articles Read More Articles
As a homeowner, it’s important to know the different septic tank sizes and what each one is capable of. Choosing the wrong septic tank size can lead to overflowing toilets...
A septic system is a reliable solution for wastewater management in homes without access to municipal sewer systems. But how exactly does it work...
As cities become more densely populated and the desire for self-sufficient living increases, many homeowners are seeking properties outside urban areas that provide a sense of independence.
When it comes time to choose a septic tank for your home, there are many factors you should take into consideration. What size do you need?
Shop Our Best Sellers
Featured Manufacturers View All
Tank Depot is proud to offer Ace, Norwesco, Snyder Industries brand Septic Tanks. The world’s leading manufacturer of polyethylene tanks, Norwesco has been producing polyethylene septic tanks since 1980. With that kind of experience, Norwesco offers you proven products that you can count on for years of dependable, trouble-free service. Norwesco septic tanks are backed by a full three-year warranty and have been approved by state and local health departments from coast to coast. Where applicable, Norweco septic tanks have been approved by both IAPMO and CSA.
NORWESCO BELOW GROUND TANKS - Conversion Option & Information
Selecting an installation Site For Your Plastic Septic Tank
Ease of Installation
For septic system replacement and new home construction, Norwesco’s polyethylene septic tanks are designed for durability and quick, easy installation. Any Norwesco septic tank can be transported to the job site in a pickup truck and carried by just two people. This enables you to install the tank on your schedule.
NORWESCO Installation Instructions
NORWESCO Underground Tank Installation Instructions
NOREWESCO 2500 Gallon Horizontal Box Tank Installation Instructions
Please consider the following features when you are looking to purchase a septic tank and you’ll find that Norwesco tanks will exceed your expectations when it comes to performance and longevity.
Rotationally Molded, One-Piece Construction
Norwesco septic tanks are manufactured by means of the rotational molding process which produces a one-piece, seamless, watertight tank.
Superior Strength Design
The rib design and rib placement provide superior structural integrity to the tank.
Excellent Chemical Resistance
Polyethylene is unaffected by soil chemicals and by the chemicals and gases present in sewage, so Norwesco septic tanks will not rust or corrode and require no additional coatings as other tanks do. Norwesco’s strict quality guidelines ensure an environmentally safe septic tank.
Single or Double Compartment
Our 750, 1000, 1250 and 1500 gallon tanks are available as single compartment or double compartment tanks (2/3 - 1/3). Prior to installing any septic tank, you should check with your local health department for specific requirements that your county or state may enforce.
Pre-Plumbed / Ready for Installation
Norwesco septic tanks (750 gallons and larger) are shipped to you ready for installation. Our pre-plumbed tanks include tee assemblies installed at the inlet and outlet. Tees are sized/cut according to each state code so the tank that you receive will be ready for installation.
Watertight Lid
Norwesco septic tanks come outfitted with a domed lid. This improved design is significantly stronger than other lid designs. When leaving our factory the lid is attached to the tank with four stainless steel screws and comes standard with a foamed, polyethylene gasket between the lid and the tank. The gasket provides a watertight seal at the lid area.
Accessories Available
Manhole extensions and lid-riser combinations are available to bring tank access to grade and to meet code specifications.
