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*The Angi rating for Septic Tank Service companies in Mahnomen, MN 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 Mahnomen, MN 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 July 20, 2026

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Avatar for American Home Shield – Home Warranty
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 Mahnomen, MN and surrounding areas

In business since 1971

Credit card accepted

"The technician emptied the freezer, which was in the basement, to work on the part that needed repair. Then he neglected to put anything back into the freezer, including a turkey I had bought for Christmas and a rack of ribs. Two days after he left, I went out of town for two weeks. The turkey actually exploded and spewed its liquid all over everything, which had to be discarded. I let AHS know and they couldn't even bother to call me or follow up on this. I'm considering not renewing my contract with them because of the quality (or lack thereof) of many of the providers they send."
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+2

Recommended by65%of homeowners
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Boit Excavating, LLC
5.0(
2
)
Septic System - Install or ReplaceSeptic System - Install or Replace - For BusinessSeptic System - Repair+1 more

Serving Mahnomen, MN and surrounding areas

In business since 1994

Free estimates

Boit Excavating, LLC is the premier professional excavation company offering residential services to our clients in the Detroit Lakes area. We are known to pay exquisite attention to detail while making your satisfaction our number one priority. Please call us today to schedule your appointment with Minnesota's true professionals at work for you!

Response time2 days
Recommended by100%of homeowners
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Septic Tanks questions, answered by experts

There are a few signs that you might notice if your drain field is bad. For starters, if you see standing water or soggy grass above your drain field, it could mean that it isn’t working correctly. Or, if your yard smells like sewage, it could also indicate that there’s a problem with your drain field. Repairing a drain field costs an average of $2,000 to $15,000.

With proper maintenance, most types of septic systems—including mound, evapotranspiration, and constructed wetland systems—can last up to 40 years. To keep your system running as long as possible, follow basic septic tank upkeep guidelines, like pumping your septic tank every three to five years and only flushing human waste and toilet paper.

Schedule annual inspections, test water pressure, and protect the pump from freezing temperatures.

Pump the tank every 3-5 years, avoid flushing non-degradable items, and address leaks promptly to extend system life.

A cistern works by collecting rainwater from your gutters and downspouts and storing it in a holding tank. The holding tank can be installed above or below ground, and the size will depend on your household needs. The stored water can then be used for household tasks, watering your garden, and even for drinking water.

The Mahnomen, MN homeowners’ guide to septic tank services

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

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