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*The Angi rating for Sewer Cleaning companies in Knapp, WI is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Sewer Cleaning needs.

*The HomeAdvisor rating for Sewer Cleaning companies in Knapp, WI is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Sewer Cleaning needs.

Last update on January 19, 2026

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Legendary Plumbing, LLC
4.3(
6
)
Sewer Main - ClearSewer Main - Clear - For Business

Serving Knapp, WI and surrounding areas

In business since 2019

Free estimates

Legendary Plumbing, LLC, is a leader in providing our customers with the highest quality products and craftsmanship in an honest, efficient and professional way. Our pledge is to create successful relationships with our customers, employees, community by building trust and treating every project with the utmost integrity and exceeding expectations. \n \n\nWe look forward to working with you!

Kitchen remodel
Wells
Remodel
Shower
Response time1 day
Recommended by83%of homeowners
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Avatar for American Home Shield – Home Warranty
American Home Shield – Home Warranty
3.5(
5,688
)
Sewer Main - ClearSewer Main - Clear - For Business

Serving Knapp, WI and surrounding areas

In business since 1971

Credit card accepted

"The called Jayco plumbing in Amarillo, TX. They located my buried sewer line and cleaned out both sewer clean-outs to my new house."
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+2

Recommended by65%of homeowners
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Sewer Cleaning questions, answered by experts

It can take anywhere from one month to a couple of years for tree roots to grow back in sewer lines. Tree roots can cause extreme havoc on your sewer lines, potentially cracking them and causing untreated wastewater to make its way into the groundwater. Have a landscaping pro remove trees and roots before installing your system, or call a pro to do it retroactively as soon as you can.

While some chemical drain cleaners with hydrochloric acid can dissolve hair, this method is not recommended as it can also destroy your plumbing pipes. A common DIY alternative is using baking soda and vinegar, which can help break down the clog but will not actually dissolve the hair. The best and safest method for clearing a hair clog is to remove it manually. You can use a drain snake, a straightened wire hanger with pliers to fish out the clog, or have a plumber use a professional auger for more severe blockages.

You should hire a sewer service professional to unclog a main sewer line with tree roots. Tree roots can grow into the main sewer line, and this problem requires a specialized hydro jet, or rooter, that is powerful enough to clear the roots. The tree can also damage the main sewer line, and a professional will need to make repairs or replace the damaged sections. Sewer line replacement costs about $60 to $250 per linear foot.

It is safe to flush small amounts of bleach down the toilet. Don’t flush more than ¼ cup of bleach. Instead, consider diluting it and pouring it down the sink drain.

A sewer line should be cleaned at least once every 18 to 22 months. The process takes about 30 minutes or up to 5 hours, depending on the size of the line, how easy it is to access, and how long it’s been since the previous cleaning. If your sewer line hasn’t been cleaned in a couple of years or you don’t even know the last time it’s been cleaned, it’s time to call a pro.

The Knapp, WI homeowners’ guide to sewer cleaning services

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

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