Residential Septic Systems
For most Montana homes, a two-compartment tank between 1,000 and 1,500 gallons is the right call — sized to your bedroom count and whether the system is gravity-fed or pump-dosed. We help you get it right before you dig.
Getting the spec right
A few things we’ll walk through with you.
Popular for Residential Septic Systems
A starting point — the full size list lives on the product page.
500 Gallon Septic / Pump Chamber
1000 Gallon Septic / Pump Chamber
1000/500 Gallon Septic / Pump Chamber
1000 / 500 Septic / Pump Chamber
3 steps to your order
Requirements vary by county — call us and we’ll point you to the right forms for your area.
Land Research Request
Start with a Land Research Request with your county before any septic application.
County health review
Apply for a residential evaluation & septic system permit with your county health department.
Get an estimate
Send us the approved details and we’ll size, price, and schedule your tank.
Questions about Residential Septic Systems?
Tell us what you are building and we will point you to the right product, size, and lead time. No pressure, no bots.
(406) 752-7163Other Septic & Wastewater uses
Let’s spec your next precast project
Send us the drawings, the dimensions, or just the idea. We will tell you what is possible, what it costs, and when we can set it.