Engineering, Design & Permitting in Comanche, MT

The process starts with a site evaluation: soil test pits, percolation characteristics, groundwater depth, and setbacks to wells, streams, and property lines. From that data, our team designs a wastewater system matched to your site -- conventional gravity where soils allow, pressure-dosed or advanced treatment where they don't.

We then prepare and submit the permit package and manage the review process with the county sanitarian and, where applicable, Montana DEQ. We work regularly with Yellowstone, Stillwater, Carbon, Musselshell, and Sweet Grass county offices, so we know what each jurisdiction expects and how to keep reviews moving. Allow at least 30 days for engineering and review; we'll give you a realistic timeline up front.

Flood plain parcels, small lots, and difficult soils need careful planning. Our in-house engineering process brings together site conditions, installation requirements, and the project budget before plans are submitted.

As Montana's exclusive SludgeHammer installer, we can evaluate advanced treatment options alongside drain field design. Our team coordinates the design, permitting, and installation work so the proposed system is practical for the site.

We engineer wastewater systems for single-family homes, shops and garages with plumbing, multi-family properties, campgrounds, restaurants, and commercial facilities across the region. Engineering typically starts around $5,000 depending on project scope and complexity -- and bundling engineering with installation through TLC Patriot usually costs less overall than hiring a standalone engineering firm and then bidding out the construction.

TLC Patriot is the only septic company in the Billings area with an in-house engineering process. For residential and commercial wastewater and septic projects, one phone call covers engineering, design, permitting, and installation.

Our process brings site evaluation, design, permitting, and practical installation knowledge together. The design accounts for how the system will be built, the crew works from the permitted plan, and one accountable team handles questions throughout your project.