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Best septic tank pros near Lolo, MT

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Top-Rated Septic tank pros in Lolo - Updated Nov 2026

Avatar for White River Excavation, LLC
White River Excavation, LLC
5.0(
9
)
Septic System - Install or ReplaceSeptic System - Repair

Serving Lolo, MT and surrounding areas

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
Avatar for Bitterroot Valley Septic, LLC
Bitterroot Valley Septic, LLC
5.0(
1
)
Septic System - Repair

Serving Lolo, MT and surrounding areas

In business since 2021

Free estimates

Emergency services offered

At Bitterroot Valley Septic LLC, we are a local family-owned septic pumping business that not only serves you as a customer but as a friend. We are happy to be your local septic pumping service provider in the Ravalli County of Montana. With over 10 years of experience in the septic business, we strive to provide you with excellent customer support while offering you competitive pricing on our services. We provide a variety of services from standard septic pumping and cleaning, to unclogging clogged sewer pipes, scoping lines to check for problems, excavating and repairing broken and sagging pipes, and also installing replacement septic systems. We also repair or replace septic effluent and sewage lift pumps. \n \n

Drainfield during installation
Drainfield area
After The Sod Was Replaced
Routine Pumping Service-
Routine Pumping Service-

+6

Response time5 hrs
Response rate100%
Avatar for American Home Shield – Home Warranty
American Home Shield – Home Warranty
3.5(
5,689
)
Septic System - Install or ReplaceSeptic System - Install or Replace - For BusinessSeptic System - Repair+3 more

Serving Lolo, 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
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+2

Recommended by65%of homeowners
Avatar for JW Excavation & Septic, LLC
JW Excavation & Septic, LLC
New to Angi
Septic System - Install or ReplaceSeptic System - Repair

Serving Lolo, 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
Septic System - Install or ReplaceSeptic System - Install or Replace - For BusinessSeptic System - Repair+1 more

Serving Lolo, 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

Scenic Excavation
New to Angi
Septic System - Repair

Serving Lolo, MT and surrounding areas

In business since 2019

Free estimates

Scenic Excavation takes great pride in our experience, expertise, quality and customer service. It is our mission to provide excellent workmanship, and complete customer satisfaction, from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large, or small the job.

Avatar for McDonald Contracting, Inc.
McDonald Contracting, Inc.
New to Angi
Septic System - Install or ReplaceSeptic System - Install or Replace - For Business

Serving Lolo, MT and surrounding areas

In business since 1990

Free estimates

Credit card accepted

COMPANY NAME \n \nMcDonald Contracting is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

Response time2 days
Septic Tanks FAQs, answered by experts

Your septic tank naturally contains the beneficial bacteria it needs to function, so you typically don't need to add more. However, if you wish to replenish the bacteria, you can use natural methods. For example, you can add three overripe tomatoes to your garbage disposal or flush 1/4 ounce of active yeast down the toilet every three months. While store-bought septic enzymes and chemicals are available, many experts consider them unnecessary and potentially harmful. The most effective way to maintain a healthy bacteria population is to avoid using chemical drain cleaners, which can kill the good bacteria in your system.

Your drain field or leach field should be 1 to 3 feet under the ground. It will be a little shallower than the septic tank, although it can be the same depth or slightly deeper. The proper depth of the septic tank is up to 4 feet. It’s possible that your local regulatory agency requires a certain depth for your drain field.

If your septic tank is still within its expected lifespan and you need to relocate it on your property, it's possible to do so. However, because the task is so labor-intensive and costly, most homeowners simply choose to abandon the old tank if possible and install a new system in the new location. In either case, hiring a professional installation company will be necessary for the job. 

Ensuring you have adequate space for your engineered septic system is crucial. You’ll need to reserve approximately 900 square feet for a three-bedroom home’s system. However, the type of soil you have, soil absorption rate, the size of your home, climate, and local zoning code will impact the actual amount of space you need.

Drain fields often include three to five trenches that are 18 to 24 inches deep. The pipes connecting the drain field to the septic tank will be placed between 12 and 18 inches deep, and the field as a whole will be about 100 feet long.

The Lolo, MT homeowners’ guide to septic tank services

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