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TRUSTED BY SULLIVAN, WI HOMEOWNERS

  • Average homeowner rating star icon4.8
    Average homeowner rating
  • Verified reviews icon31
    Verified septic tank services reviews

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

Avatar for Area Septic Installation, Inc.
Area Septic Installation, Inc.
4.7(
13
)
Septic System - Repair - For Business

Serving Sullivan, WI and surrounding areas

In business since 2003

Free estimates

"I contacted Andy from Area Septic Installation Inc. because I was selling my house and the septic system did not pass the inspection. I normally contact 3 providers to get the best price. Andy was the only one to call me back and to come out to the house. Andy was very friendly, and provided me with great information and no hassle/pressure bid. Because I was selling the house there was a tight deadline on getting the work done. The time of year that I needed the work done is extremely busy and the weather did not cooperate. Andy also took time to explain to me some of the deceptive practices in this line of work and cautioned me not to become victimized. I thought that in and of itself was remarkable that he gave me this information so I would not become victimized. Andy showed up on the day he said he would be there, and got to work immediately. Andy knew that I was on a tight deadline to close and he worked long and extra hours to get the job done. His price was very reasonable for the work that needed to be done. Andy did everything to make this as easy as possible, and did a great job. When the work was completed Andy wanted me to come check the work to make sure it was up to my satisfaction before he left. Andy had the yard looking great back to its natural look. If you are in need of septic work I would strongly suggest calling Area Septic Installation Inc. for the work. Hard workers, Honest contractor, and fair pricing what more could you want. Jim Z."
Large systems
Large tanks
Easy Flo drain field
Septic Tank
Installing system

+6

Response time7 hrs
Response rate85%
Recommended by90%of homeowners
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 Sullivan, 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
Patricio Abeso
New to Angi
Septic Tank - Clean or Pump OutSeptic Tank - Clean or Pump Out - For Business

Serving Sullivan, WI and surrounding areas

In business since 2013

Free estimates

Credit card accepted

We are 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.

Septic Tanks FAQs, answered by experts

Start by finding the septic tank, marked by an access lid near your home. From there, the drain field extends outward in a series of trenches. Look for greener, lusher grass, as drain fields promote plant growth due to moisture and fertilizer. You can also check property records, use a soil probe to detect damp soil, or hire a septic professional with ground-penetrating radar equipment to map the drain field’s location.

While homeowners connected to a municipal sewer line still have to keep up with plumbing maintenance, the downside to a septic system is that all the maintenance falls on the homeowners. Not calling in a pro to pump the tank every few years or accidentally flushing or draining the wrong types of materials can quickly cause clogs, which can back up into drains around the home.

Yes, a bigger well pump can increase water pressure—up to a point. If you currently have a well pump of 8 GPM, you might notice a pressure boost when you go up to 10 GPM. However, overshooting significantly (going up to 15 GPM for an 8 GPM home) can strain your well system and result in things like burst pipes that can decrease your water pressure and make for costly repairs.

Call a dedicated well and pump professional to install your new well pump. In some cases, plumbers may have the experience needed for the installation, but it’s always better to go with a specialized pro. Well and pump contractors have hundreds of hours of experience with all different types of wells and pumps. 

Choosing a reliable septic tank company starts by finding an experienced company in your area with positive customer reviews online. You can also use the following tips to help ensure you have a positive experience:

  • Choose a company that is licensed and fully insured

  • Ask the company for customer references

  • Ask if the company provides any guarantee for the repair

  • Determine the provider’s level of experience

The Sullivan, WI homeowners’ guide to septic tank services

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