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TRUSTED BY MANHATTAN, MT HOMEOWNERS

  • Average homeowner rating star icon4.4
    Average homeowner rating
  • Verified reviews icon25
    Verified septic tank services reviews

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

Avatar for Welk Excavating, Inc.
Welk Excavating, Inc.
New to Angi
Septic System - RepairSeptic System - Install or ReplaceSeptic System - Install or Replace - For Business+1 more

Serving Manhattan, MT and surrounding areas

Approved

In business since 2020

Free estimates

Small jobs welcome

Excavation Contractor with over 10 years experience- in both commercial and residential projects Family run and operated business. \n \n Welk Excavation 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.

Road
Parking Area
Response time2 days
5 neighbors recently requested a quote
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 Manhattan, 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."
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+2

Recommended by65%of homeowners
Avatar for CS Earthworks LLC
CS Earthworks LLC
5.0(
3
)
Septic System - Install or ReplaceSeptic System - Install or Replace - For Business

Serving Manhattan, MT and surrounding areas

In business since 2019

Free estimates

Offers commercial services

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business!

Response time40 mins
Recommended by66%of homeowners
Avatar for Simple Works
Simple Works
4.3(
16
)
Septic System - Install or ReplaceSeptic System - Install or Replace - For BusinessSeptic System - Repair+3 more

Serving Manhattan, MT and surrounding areas

In business since 2014

Free estimates

Credit card accepted

I'm Peter Harris and I am the owner/proprietor of Simple Works here in the Gallatin Valley. I specialize in home renovation with emphasis in kitchen and bathroom reworks. Simple Works does both home and commercial remodeling, small scale and large. I work with other business owners around the valley who, combined with my skill set, can get any job done! I enjoy meeting people and making their vision come to life through the renovation work Simple Works does. Call or email to get your project started today!

Recommended by85%of homeowners
Avatar for 406 Septic Service
406 Septic Service
3.0(
2
)
Septic System - Install or ReplaceSeptic System - Install or Replace - For BusinessSeptic System - Repair+1 more

Serving Manhattan, MT and surrounding areas

In business since 2017

Free estimates

Emergency services offered

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

Cleaned Filter
Inlet and Outlet Risers
Checked overall system functionality
Response time3 hrs
Recommended by100%of homeowners
Troy's Excavation Service, LLC
New to Angi
Septic System - Install or Replace

Serving Manhattan, MT and surrounding areas

In business since 2004

Free estimates

Troy's Excavation Service, LLC, can help you out with any of your outside the house needs. We specialize in water or pond features, excavation, preparing your land for landscape install, brick walks, concrete, stone or brick patios, walk ways and steps. As well as installing a brand new septic system. With over 20 years of experience, we have the quality, technique, and responsiveness you deserve. Call Troy today for your free estimate!

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Septic Tanks FAQs, answered by experts

There are many reasons you may want to extend the depth of an existing well or drill a new, deeper well on your property. A deeper well can tap cleaner water sources—shallow water may contain more contaminants. With a deeper well, you’ll also have an easier time reaching the water table depth (the level at which underground water is found) and can get past tricky soil conditions. 

Plus, if your local building code requires a minimum well depth for safety and environmental standards, you’ll meet the code by digging a deeper well in the first place.

To keep your septic tank healthy, be careful of what you flush and be conservative with water usage, as even flushing too much water down the drain can throw off the septic system’s delicate balance. Never flush anything but human waste and toilet paper down your toilet, and be sure to have the tank inspected and pumped every two to five years, depending on the size of your household and your water usage.

Septic tank locations are sometimes public record, although it depends on local laws and the property age. Older properties may not have the septic tank information on public record. To check, you can talk to local permitting agencies, such as your local health department, the local environmental department, or the county clerk.

Options include submersible, jet, and centrifugal pumps. Choose based on water needs and well depth.

Saving money on property taxes and having direct control over your waste system are both pros when buying a house with a septic tank. However, it’s easier on the house and the yard if a home can be hooked up to a municipal system, which is why septic tanks are best for homes where that isn’t an option. Expensive repairs, potential odor issues, and regular maintenance are all cons of septic systems. 

The Manhattan, MT homeowners’ guide to septic tank services

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