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Verified Reviews for Septic Tank Service pros in Onalaska, WI

*The Angi rating for Septic Tank Service companies in Onalaska, 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 Onalaska, 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 January 05, 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 Onalaska, 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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Triple M Contractors
New to Angi
Septic Tank - Clean or Pump OutSeptic Tank - Clean or Pump Out - For Business

Serving Onalaska, 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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Septic Tanks questions, 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.

Costs depend on tank accessibility, size, and local rates. Regular service serves as preventive care, averting costly emergency repairs or system replacements.

A septic tank riser should extend to just above the ground level or slightly above it. The exact height can vary depending on local regulations and personal preferences, but a common guideline is to have the riser's top flush with or no more than a few inches above the surrounding ground. This height allows for easy access to the septic tank without creating a tripping hazard or obstructing mowing and landscaping activities. It's essential to ensure that the riser lid is easily visible and accessible for regular maintenance and inspection while being mindful of safety and aesthetics.

There are a few signs that indicate a failing drain field. For instance, if your septic tank starts requiring more pumping than normal, your drain field might be failing. Other signs to watch for include poor drainage after rain, standing water or sewage over the septic system, a strong septic smell outside, new and healthy grass growing over the drain field, and plumbing backups in your sinks, bathtubs, or toilets.

We’ve explained how deep-rooted plants can damage a septic tank from the outside, but plenty of things can ruin it from the inside, too. For example, flushing bulky items (like paper towels, diapers, and wipes) can clog your septic tank. Cooking oil, grease, and household chemicals can also harm your system. And since a new septic system costs between $3,460 and $11,450, it’s worth following these guidelines.

The Onalaska, 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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