Get matched with top septic tank pros in Hall, MT

Q: How deep should a septic drain field be?

• <div><p>The ideal depth of a septic drain field is <b>18 to 36 inches</b> below the surface. The trenches must be deep enough to allow proper wastewater distribution and filtration while remaining shallow enough for oxygen to reach the soil, promoting bacterial activity that helps break down contaminants. In areas with high groundwater or poor drainage, shallower systems like mound drain fields may be required.</p></div>

Q: How long do engineered septic systems last?

• <div><p>Many variables, such as home size, type of engineered system, the material used, soil conditions, and water usage, dictate how long your system will last. On average, most homeowners find that their system lasts 15 to 20 years, though it&rsquo;s not unheard of for them to last up to 40 years with annual and preventative septic maintenance.</p></div>

Q: How much does it cost to replace or install a new septic tank?

• <div><p>The average cost to replace a septic tank or install a new system is typically around $7,350, with a broader average range of $5,000 to $12,000. However, total project costs can vary widely, from $5,000 to as much as $22,500. Key factors influencing the price include the size and type of the septic system, the tank material, and the size of your house.</p><p>It's important to distinguish between the cost of the tank itself and the cost of the entire system installation, which is significantly more. For the tank alone, costs vary by size:</p><ul><li><p>A tank for a one-bedroom house typically costs $500 to $900.</p></li><li><p>A 1,000-gallon tank, suitable for most one- to three-bedroom homes, costs between $900 and $1,500.</p></li><li><p>A tank for a five- or six-bedroom home generally costs $1,200 to $1,600.</p></li></ul></div>

Q: What are the disadvantages of cesspools?

• <div><p>Although cesspits may be necessary depending on your main sewage system access or nearby soil quality, they carry a few drawbacks. Cesspools require regular emptying and have relatively high maintenance and pumping costs. Certain areas also disallow the use of cesspools and may require you to cover the <a href="https://www.angi.com/articles/converting-cesspool-to-septic-cost.htm">cost of existing cesspools to be converted into septic tanks</a>.</p></div>

Q: Does well water damage pipes?

• <div><p>Because well water is not artificially filtered or pre-treated, it may contain contaminants. As a result, it&rsquo;s possible for well water to damage pipes based on what is in the water. Well water can be corrosive, slowly rusting and dissolving pipes, fixtures, and fittings. The corrosion can affect the taste and quality of the drinking water that comes out of the taps in your home. </p></div>

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Verified Reviews for Septic Tank Service pros in Hall, MT

*The Angi rating for Septic Tank Service companies in Hall, MT is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Septic Tank Service needs.

*The HomeAdvisor rating for Septic Tank Service companies in Hall, MT is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Septic Tank Service needs.

Last update on August 10, 2025

Reviewed in August 2025
Dan was absolutely the best. Worked 10 days straight. Set rock for our waterfall, retaining wall, tree planting, finish grading for lawn areas. Rock work included 70 tons of rock. Excellent equipment operator, careful, very courteous and attentive to our wishes. I have more for Dan to do in the...
Digger Dan Excavation and Landscaping, LLC
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Reviewed in April 2024
Our company C21 has worked with Bandy Appraisal for many years and have always had very prompt and professional service Very much recommend them.
Bandy Appraisal
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Reviewed in December 2023
Mark did a great job with project with good communication along the way. They picked up my new wood stove and delivered to my home and got it installed on schedule and without issue. I would recommend Orca to anyone looking for an install or help with a wood stove issue.
Orca Fireplace, LLC
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Reviewed in September 2022
Working with Tim and Tall Tines Contracting was an all around great experience. He was professional, polite and prompt. I would highly recommend Tim for any job!
Tall Tines Contracting
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Reviewed in June 2022
Jeremy Caira is amazing! This process was so painless and by the time Jeremy left our home we had every question and concern answered and eased. He walked us through every part of the process and is even helping us secure financing to replace a roof that will soon fail. Thank you Jeremy! We are...
DaBella - Missoula (Roofing)
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Reviewed in March 2022
He also installed a bathroom fan. Good job and affordable! I will use him again!
The North Pole Handyman
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Reviewed in December 2021
Job was completed ahead of schedule, looks good and performs well. Couldn't be happier, I highly recommend.
Lewistown Sprayfoam and Insulation
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Reviewed in July 2021
She was very good and I am very happy with her work. My only concern is she should have someone to help her to the job. The house is big for 1 person to the cleaning. I paid the service and I need to mop my kitchen floor because she can't do it alone.
HomeAdvisor
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Reviewed in September 2020
Service was great, from start to end. Workers are great. More next year.
Renewal by Andersen of Montana
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Reviewed in July 2020
Sean responded promptly, kept me informed and reported results in a timely manner
Montucky Home Inspections, LLC
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Find Septic tank pros in Hall

Septic System - Install or ReplaceSeptic System - Install or Replace - For BusinessSeptic System - Repair+3 more

Serving Hall, MT and surrounding areas

In business since 2008

Emergency services offered

Credit card accepted

"Well. Only problem was delay in response time after claim was filed online. Water tank started leaking Thanksgiving morning and no reply until I called the Regional Manager."

Recommended by81%of homeowners

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American Home Shield – Home Warranty

3.5(

5,688

)

Septic System - Install or ReplaceSeptic System - Install or Replace - For BusinessSeptic System - Repair+3 more

Serving Hall, MT and surrounding areas

In business since 1971

Credit card accepted

"Takes for ever to get a return a call. Also took a week to get someone out for repairs. They said they would reimburse me for septic repairs and it took over 3 months for that to happen."

Recommended by65%of homeowners

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JW Excavation & Septic, LLC

New to Angi

Septic System - Install or ReplaceSeptic System - Repair

Serving Hall, 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.

Response time1 hour

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KMD Construction LLC

New to Angi

Septic System - Install or ReplaceSeptic System - Repair

Serving Hall, MT and surrounding areas

Free estimates

Emergency services offered

Small jobs welcome

We are an excavation/concrete company we do septic tanks, sidewalks, driveways, landscaping, demolition, and fencing. We are here for all your needs. Give us a call at 406-465-7954 for a free quote

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Scenic Excavation

New to Angi

Septic System - Repair

Serving Hall, 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.

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Septic Tanks questions, answered by experts

The ideal depth of a septic drain field is 18 to 36 inches below the surface. The trenches must be deep enough to allow proper wastewater distribution and filtration while remaining shallow enough for oxygen to reach the soil, promoting bacterial activity that helps break down contaminants. In areas with high groundwater or poor drainage, shallower systems like mound drain fields may be required.

Many variables, such as home size, type of engineered system, the material used, soil conditions, and water usage, dictate how long your system will last. On average, most homeowners find that their system lasts 15 to 20 years, though it’s not unheard of for them to last up to 40 years with annual and preventative septic maintenance.

The average cost to replace a septic tank or install a new system is typically around $7,350, with a broader average range of $5,000 to $12,000. However, total project costs can vary widely, from $5,000 to as much as $22,500. Key factors influencing the price include the size and type of the septic system, the tank material, and the size of your house.

It's important to distinguish between the cost of the tank itself and the cost of the entire system installation, which is significantly more. For the tank alone, costs vary by size:

A tank for a one-bedroom house typically costs $500 to $900.
A 1,000-gallon tank, suitable for most one- to three-bedroom homes, costs between $900 and $1,500.
A tank for a five- or six-bedroom home generally costs $1,200 to $1,600.

Although cesspits may be necessary depending on your main sewage system access or nearby soil quality, they carry a few drawbacks. Cesspools require regular emptying and have relatively high maintenance and pumping costs. Certain areas also disallow the use of cesspools and may require you to cover the cost of existing cesspools to be converted into septic tanks.

Because well water is not artificially filtered or pre-treated, it may contain contaminants. As a result, it’s possible for well water to damage pipes based on what is in the water. Well water can be corrosive, slowly rusting and dissolving pipes, fixtures, and fittings. The corrosion can affect the taste and quality of the drinking water that comes out of the taps in your home.

The Hall, MT homeowners’ guide to septic tank services

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

See all articles

Melissa Graham
•
Aug 3, 2026Aug 3, 2026
How Much Does It Cost to Locate a Septic Tank? [2026 Data]
If it’s been there for a while, it can be hard to find the septic tank in your yard. Learn how much it costs to locate a septic tank with this guide.
Scott Dylan Westerlund
•
Jul 9, 2026Jul 9, 2026
How Much Does It Cost to Pump a Septic Tank? [2026 Data]
Caring for your septic system is crucial to ensuring its long life. But how much does it cost to pump a septic tank? We explore the different cost factors.
D.P. Taylor
•
Jul 15, 2026Jul 15, 2026
Crank Up Your Understanding of Septic Tank Volume
It’s crucial to install a septic tank with the right volume to avoid wastewater backups. This guide will help you calculate the right septic tank volume.
Jamie Cattanach
•
Jul 10, 2026Jul 10, 2026
What’s the Right Septic Tank Size for Me?
Septic tank sizes vary depending on the size of your home, how many people live there, how much water you use, and more. Read on to learn how to determine the right size for you.
Taylor Freitas
•
Jul 9, 2026Jul 9, 2026
Are Septic Tanks Bad? Pros and Cons to Consider Before Moving Into a House With a Septic System
If you’ve never lived in a house with a septic system before, you might be wondering: Are septic tanks bad? Here are some of the pros and cons.
Taylor Freitas
•
Jul 9, 2026Jul 9, 2026
How to Build a Small Septic Tank for a Rural Property
Want to learn how to build a septic tank for your rural or off-grid property? First, check your local laws, then dive into these general guidelines.