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Find Septic system installers and replacers in Missoula

Avatar for Trenchless Solutions, Inc.
Trenchless Solutions, Inc.
4.5(
16
)

Serving Missoula, MT and surrounding areas

Approved

In business since 2016

Free estimates

Credit card accepted

"It is never fun to have an unexpected problem that requires a high cost repair. When I had a leak in my water service line, I got three bids, and Trenchless Solutions provided the lowest price estimate. Kurt was very professional when he came to do the estimate and seemed to know a lot about the type of work that needed to be done. The work was done promptly and the result looks good. I am still waiting for one last detail, some asphalt overlay which had to be subcontracted out and is scheduled in the coming weeks. Kurt communicated the schedule with me prior to starting the project, and he also kept me apprised of the progress as it went along. I would recommend Trenchless Solutions without hesitation."
Existing Well
Water line path from well to house
Drill head entering house.
New seamless water line
Sewer under deck

+18

Response time1 day
Recommended by92%of homeowners
Avatar for White River Excavation, LLC
White River Excavation, LLC
5.0(
9
)

Serving Missoula, MT and surrounding areas

Approved

Super Service Award Winner

In business since 2014

Free estimates

Emergency services offered

We provide professionalism and quality workmanship that only comes from years of experience and a passion for this industry. From conception to completion, we work with you until the job is done. We are ethical, honest, and easy to communicate with. \n\nCall us today you'll be pleased you did. Thank you!\n

Cutting in New Road
Final Grade
Parking Pad
Prep for Block Wall
Concrete Demolition

+9

Response time2 days
5 neighbors recently requested a quote
Avatar for Choice Home Warranty
Choice Home Warranty
4.0(
5,676
)

Serving Missoula, MT and surrounding areas

In business since 2008

Emergency services offered

Credit card accepted

"I would highly recommend choice over any home warranty as a home owner i had a major problem with my hvac system and they got it replaced in a timely fashion much respect for them don't miss out on a great deal"
Recommended by82%of homeowners
Avatar for American Home Shield – Home Warranty
American Home Shield – Home Warranty
3.5(
5,688
)

Serving Missoula, MT and surrounding areas

In business since 1971

Credit card accepted

"I just pay $75 you never know who's going to come out. They do everything electrical. Just about everything is covered except the septic tank. I had an air conditioner replaced. It went great, all I had to do was pay for the freon. He didn't charge e more than what was needed."
Additional Photos
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+2

Recommended by65%of homeowners
Avatar for JW Excavation & Septic, LLC
JW Excavation & Septic, LLC
New to Angi

Serving Missoula, MT and surrounding areas

In business since 2023

Free estimates

Offers commercial services

Welcome to JW Excavation & Septic, LLC! In business since 2023, we are a full service excavating company who takes great pride in the quality of our work and guarantees customer satisfaction. We specialize in our services for all residential properties, and no job is too big or too small. Serving Pinesdale and its surrounding areas, be sure to give us a call today! We offer free estimates.

Daylight basement and crawl space
Storage facility
Storage facility
Finished excavation
Finished excavation

+4

Response time1 hour
Diamond Back Excavating, LLC
New to Angi

Serving Missoula, MT and surrounding areas

In business since 2000

Free estimates

We take great pride in our experience, expertise, quality and customer service that we provide to meet every consumer's needs.\nIt is our mission to provide excellent customer service from start to completion of a project.\nTo understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a personal and professional manner.\nOur reputation is based on service, safety and quality, regardless of how large or small the job.\n

RKO Excavation
New to Angi

Serving Missoula, MT and surrounding areas

In business since 2021

Free estimates

Small jobs welcome

We are a locally owned company based out of Kalispell, Montana. We're dedicated to providing our clients with the very best in service, installation, and repairs. With years of industry experience, we take an enormous amount of pride in the attention to detail put into each of the projects we're involved with. We're known for our quality work and the integrity of our business. We can do anything that you need us to do, please reach out today for a free estimate.

FAQs for septic system installation and replacement projects in Missoula, MT

The smallest standard septic system uses a 500-gallon tank, which costs between $875 and $1,150 installed. This size works well for single-occupant dwellings with minimal wastewater production. However, many local regulations specify minimum tank sizes, so check with your building department before committing to this compact option. Some jurisdictions require at least 750 gallons regardless of home size to ensure adequate waste processing capacity.

The installation timeline varies based on site conditions, permit processing, and contractor schedules. The process includes obtaining permits, conducting soil tests, excavation, tank placement, leach field construction, and final connections. Weather conditions, soil challenges, and inspection scheduling can all affect the overall timeline. It's wise to begin planning well in advance of when you need the system operational.

The most economical approach is to install a conventional anaerobic system with a plastic tank. To minimize costs while maintaining legality, obtain multiple quotes from licensed installers, consider scheduling during their slower seasons, and handle basic site preparation yourself. Never skip permits or required testing to save money—illegal installations can result in significant fines and mandatory removal, ultimately costing far more than doing it right initially.

Regular pumping helps prevent system failures and extends operational life. Most small systems require pumping every three to five years, though frequency depends on household size and usage patterns. Pumping services cost between $290 and $530, making this maintenance expense relatively minor compared to potential repair costs ranging from $500 to $2,600 for neglected systems. Establishing a regular maintenance schedule based on your installer's recommendations helps avoid costly emergency services.

The Missoula, MT homeowners’ guide to septic system installations and replacements

From average costs to expert advice, get all the answers you need to get your job done.