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

Avatar for Dan's Service Plus LLC
Dan's Service Plus LLC
4.7(
36
)
Septic System - Install or ReplaceSeptic System - Install or Replace - For BusinessSeptic System - Repair+3 more

Serving Marathon, WI and surrounding areas

In business since 2005

Emergency services offered

Credit card accepted

When it comes to comfort, don’t settle for second best. Instead, call Southport Home Services for exceptional plumbing and HVAC services in Wisconsin. Whether you’re looking to repair an AC unit, replace a heating system, or install a water heater, our highly trained team is licensed and insured to get the job done. We employ 80 technicians, and have 80 fully-stocked trucks, allowing us to serve areas across Southeast Wisconsin. Our work is also backed up with a 100% satisfaction guarantee—if you are ever unhappy with our services, you simply have to let us know within the first 30 days and you’ll get your money back. As the largest certified Carrier dealer in the state, we have all the industry-leading equipment you need to upgrade your HVAC system. And with 24/7 emergency heating, cooling, and plumbing service in Wisconsin, there’s never a bad time to call Southport Home Services.

Recommended by94%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 Marathon, WI 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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Recommended by65%of homeowners
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Triple M Contractors
New to Angi
Septic Tank - Clean or Pump OutSeptic Tank - Clean or Pump Out - For Business

Serving Marathon, WI and surrounding areas

In business since 2005

Free estimates

Credit card accepted

We pride ourselves on being the best Excavation company in the area. \n \nWe've built an excellent reputation for customer satisfaction by providing quick estimates, a great attention to detail, and competitive pricing. \n \nBeing a screened and approved professional gives you the peace of mind you need to allow us to give your home the attention it deserves. Call us today and let's get started!

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Simmons Plumbing LLC Heating and Cooling Facebook
New to Angi
Septic System - Install or ReplaceSeptic System - Install or Replace - For Business

Serving Marathon, WI and surrounding areas

In business since 2016

Free estimates

Credit card accepted

We're dedicated to providing our clients with the very best service, installation and repair for all phases of your plumbing needs. We specialize in a variety of residential as well as commercial services and take pride in the attention to detail put into each of the projects we're involved with. We're known for our quality work and the integrity of our business. We look forward to building long-term relationships with our clients and guarantee your satisfaction.

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Septic Tanks FAQs, answered by experts

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.

Rainwater doesn't have a direct impact on the amount of water in your well. Instead, the majority of rain runs off into other bodies of water such as streams, rivers, and lakes. These bodies of water may sometimes function as the area’s reservoir and create aquifers, which then help to replenish your well.

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.

Ideally, you should conduct a mechanical inspection and a bacterial or well water inspection yearly. While you might be able to push it off to every other year, it’s best to have peace of mind, especially when it comes to something that you use so frequently. 

If you experience repeated gastrointestinal illness in the household, it's important to test the well water more regularly for quality and cleanliness to check for bacteria.

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. 

The Marathon, 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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