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  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon182
    Verified septic tank services reviews

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

Avatar for Alliance Ground Services, LLC
Alliance Ground Services, LLC
5.0(
8
)
Septic System - Install or Replace

Serving Howell, MI and surrounding areas

Approved

In business since 2015

Free estimates

Warranties offered

"The project turned out wonderfully! Our front garden walk and fountain area were transformed; they were very knowledgeable and easy to work with. They were able to level the area in order to divert pudding water away from the house. The end result was beautiful! We have since moved almost an hour away and have called on them once again to give us insight as to how to transform the garden areas and walkways at our new home."
Retaining Wall & Patio
Retaining Wall & Patio
Hydroseeding
Hydroseeding
Hydroseeding

+2

Response time1 day
6 neighbors recently requested a quote
Recommended by100%of homeowners
Hamilton Outdoor Services
2.8(
2
)
Septic System - Install or ReplaceSeptic System - Repair

Serving Howell, MI and surrounding areas

Approved

In business since 1988

Free estimates

Customers say: Quick response

"He did a great job and they did what I wanted them to do. I was not there when the job was completed. There were a few changes that needed to be made, I called them, they came right out and took care of it. I was very happy with the work that was done."
Response time1 day
4 neighbors recently requested a quote
Recommended by100%of homeowners
Knights Grading & Excavating, Inc.
New to Angi
Septic System - Install or Replace

Serving Howell, MI and surrounding areas

Approved

In business since 1986

Free estimates

Knights Grading & Excavating is a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have over 12 years of hands on experience, to provide innovative ideas and suggestions tailored to your projects. Our services are customized to your individual needs, paying close attention to the details of each project that we are involved with. Please feel free to contact us today!

Response time1 day
Mr fixture
New to Angi
Septic System - Install or ReplaceSeptic System - Repair

Serving Howell, MI and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

Hello and thank you for viewing my services, I hope to fix any issue you have and build a relationship off of trust and fine work, if you were wondering what services I offer it’s easier for me to tell you what I don’t, no shingles and no tile, but I do offer grout replacement. It’s a great day when problems go away and projects are finished.

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Septic Tanks FAQs, answered by experts

Never use Drano on blocked toilets. You can end up with a ghastly leak because the chemicals eat away at the glue that holds pipes together just as effectively as they do with clogs. Drano is known for being particularly rough on toilets, which is why some plumbers actually dislike the product. 

A new water well pressure tank costs $300 to $500. If you choose to hire a plumber for the job, expect labor to cost $125 to $200. If the tank is difficult to access, labor will cost more. Diaphragm and bladder well pressure tanks have similar costs. One-compartment well pressure tanks are less costly, but they have a higher chance of waterlogging. Larger pressure tanks cost more and hold more water, but they don’t increase water pressure.

Watch for slow drainage, pooling water in the yard, or unpleasant odors inside or outside. Addressing these issues timely avoids significant disruptions or costs.

Leach lines are commonly made of PVC pipe, and they’re placed into trenches filled with gravel and sand, which help treat the wastewater. The PVC pipes are perforated, or drilled with small holes, so the wastewater can drain out of the pipes and into the surrounding material, which eventually leads to the aquifer.

To keep roots from growing into a septic tank. However, there are other steps you can take if existing tree roots are getting close to your septic tank. For one, you can install root barriers, which physically block roots from reaching your septic tank. You can also use chemical solutions in your yard or plumbing system to deter root growth.

The Howell, MI homeowners’ guide to septic tank services

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