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Verified Reviews for Septic Tank Service pros in Markesan, WI

*The Angi rating for Septic Tank Service companies in Markesan, WI 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 Markesan, WI 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 September 14, 2026

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

Avatar for Engel Mechanical LLC
Engel Mechanical LLC
5.0(
2
)
Septic System - Install or Replace

Serving Markesan, WI and surrounding areas

Approved

Free estimates

Credit card accepted

"I had a great experience with this plumber. The work was completed efficiently, and everything has been working perfectly since. I really appreciated the professionalism, reliability, and prompt service. If you're looking for someone who is skilled and dependable, I would definitely recommend!"
Plumbing
1 neighbors recently requested a quote
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Avatar for Badgerland Remodeling
Badgerland Remodeling
3.9(
7
)
Septic System - Install or Replace

Serving Markesan, WI and surrounding areas

Approved

Super Service Award Winner

Free estimates

Credit card accepted

We pride ourselves on the quality work we provide, while delivering great customer service. Check out our services offered and call or click to schedule an estimate today!\n

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+14

2 neighbors recently requested a quote
Recommended by80%of homeowners
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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 Markesan, WI 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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Avatar for Mischo Mechanical, LLC
Mischo Mechanical, LLC
0.0(
2
)
Septic System - Install or ReplaceSeptic System - Repair

Serving Markesan, WI and surrounding areas

In business since 2002

Mischo Mechanical has one mission- to serve all your plumbing needs! We have been helping consumers like yourself since 2002. We offer professional installation and repair on all your plumbing needs. Mischo Mechanical is a family owned and operated business. We take great pride in dealing personally with all of our customers. With our low overhead, we can afford to provide a face-to-face experience that will set us apart from any other plumbing companies. We take pride in serving our customers as people not as numbers. We believe in making our customers repeat customers. Most of our business comes directly from references by previously satisfied customers. We are confident that every job produced by Mischo Mechanical LLC will meet and exceed all customer expectations. Whether you are installing new plumbing or repairing existing plumbing, we have the qualifications to give you professional and quality work that is comprehensive and complete. That is our promise to you. Thank you for your time and consideration, we look forward to helping you meet all your plumbing needs!

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Septic Tanks FAQs, answered by experts

The best times of year to pump or empty a septic tank are spring and fall. Many professionals recommend spring because the ground has thawed, making the tank easier to access, and any snowmelt or rainfall can aid in proper drainage. Pumping before summer is also ideal to avoid conflicts with vacations or outdoor gatherings.

Fall is another great option, as contractors may be less busy than in the spring. Servicing the tank in late fall or early spring can also reduce the risk of overflow from extra precipitation during winter and spring.

While summer is a possibility, winter is generally not recommended. The ground is often frozen, which can make it difficult to access the tank, and the waste inside may also be frozen.

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.

While you can drain water softener backwash into a septic tank, doing so may cause several problems. One problem is that increased sodium chloride levels from water softener backwash can kill septic tank bacteria, decreasing the effectiveness of this wastewater treatment system. Another issue is that large calcium deposits can eventually stop up the drain field and lead to poor drainage. 

Talking with a septic pro before planting trees near your tank is best to ensure the roots won’t interfere with your septic system. However, there is an easy way to figure out where to plant a tree—but you’ll need to know how tall it can get when it’s fully grown. For instance, if the tree can reach 50 feet, plant it at least 50 feet from your septic system.

Getting well water tested costs $100 to $350 if done by a pro. You can also buy DIY test kits for $20 to $100, but professional tests are more reliable. You can get a comprehensive well inspection, which includes advanced water testing, for $700 to $750, which you should do yearly anyway.

The Markesan, WI 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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