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TRUSTED BY HOWELL, MI HOMEOWNERS

  • 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
9 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

DIY is not recommended due to safety and technical requirements. Hire professionals for accurate diagnosis and repair.

A septic tank always has some amount of liquid in it—which should usually be 8 to 12 inches from the top of the tank. If the liquid level is higher than that or is overflowing the drainage pipe that leads out to the leach field, the tank may be too full and in need of pumping.

Septic systems typically require servicing every 3-5 years, but frequency varies according to household size and tank capacity.

Conventional anaerobic septic systems are the most cost-effective and least expensive type, with installation costs typically ranging from $3,000 to $8,000. For comparison, sand filter systems cost between $7,000 and $18,000, while mound systems are the most expensive at $10,000 to $20,000. Several factors influence the final price. The tank material is a key consideration; plastic tanks are the most budget-friendly option, starting around $2,900, but concrete and fiberglass tanks offer greater durability and longer life spans at a higher cost. The size of the tank also affects the price. For example, a 1,000-gallon tank costs between $900 and $1,500, whereas a larger 1,500-gallon tank costs $1,500 to $2,500.

Septic tanks appear full after pumping because the liquid levels have returned to normal. If you can see the pipe, the tank is empty. However, heavy rain can cause septic tanks to fill faster than normal. You might also have leaky pipes or faucets, causing extra water to drip down the drains and into the septic tank.

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.