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TRUSTED BY HARMONY, RI HOMEOWNERS

  • Average homeowner rating star icon4.8
    Average homeowner rating
  • Verified reviews icon95
    Verified septic tank services reviews

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

Avatar for A. Macari Construction Co, Inc.
A. Macari Construction Co, Inc.
4.4(
19
)
Septic System - Install or ReplaceSeptic System - Install or Replace - For Business

Serving Harmony, RI and surrounding areas

Approved

In business since 2013

Free estimates

Credit card accepted

"I had my sewer hooked up from the septic to the city sewer. I got quotes from 5 different contractors and Anthony gave my the best quote by far. His team came to my house and in less than a day the job was done. I was very pleased with the job they did and would highly recommend them to anyone."
Widening of Driveway
Widening of Driveway
Widening of Driveway
Widening of Driveway
Asphalt Overlay

+70

Response time2 days
Recommended by100%of homeowners
Carpenter Brothers, Inc.
4.4(
8
)
Septic System - Install or ReplaceSeptic System - Install or Replace - For BusinessSeptic System - Repair+1 more

Serving Harmony, RI and surrounding areas

Approved

In business since 1979

Free estimates

Customers say: Quick response

"Woody, Craig, and the team were great to work with and did an excellent job replacing my septic system. They were very responsive and communicated throughout the project. They were transparent about all pricing and honest. They did a great job with the install and the finish landscaping they did was more than I could have expected. I highly recommend them, they are busy for a good reason."
Response time3 days
3 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Delfino Corporation
Delfino Corporation
5.0(
11
)
Septic System - Install or ReplaceSeptic System - Install or Replace - For BusinessSeptic System - Repair+1 more

Serving Harmony, RI and surrounding areas

Approved

Super Service Award Winner

In business since 1962

Customers say: True professional

"I had a wonderful experience with Delfino construction. They have completely transformed my house and property with a new drainage system and sump pump rendering my basement to be DRY! Also a new septic tank and leech field along with beautiful rock walls and U shaped driveway. The knowledge and attention to detail made our whole experience very comforting we couldn’t be happier with the turnout. Thankyou so much!"
Jamestown Residence Improvements
Scituate Residence Improvements
Parking expansion
Drone footage of plan view. Septic tank- 200’ forcemain to Elgens field
Jamestown Residence Improvements

+63

Response time1 day
Response rate100%
1 neighbors recently requested a quote
Venditti Construction, Inc.
5.0(
1
)
Septic System - Install or ReplaceSeptic System - Install or Replace - For Business

Serving Harmony, RI and surrounding areas

Approved

In business since 2015

Free estimates

Credit card accepted

With 5 years of experience in the contracting industry, we are the experts you need to take care of your home or business. We are always on time and handle everything from kitchen remodels to major home renovations. In the winter we even take care of commercial snow plowing! We will treat your home as we would treat our own. Give Venditti Construction, Inc. a call today. We look forward to working with you!

3 neighbors recently requested a quote
Recommended by100%of homeowners
Hawkins Maintenance, LLC
5.0(
13
)
Septic System - Install or ReplaceSeptic System - Repair

Serving Harmony, RI and surrounding areas

In business since 1995

Free estimates

Offers commercial services

"Wayne and crew did a great job installing our septic system. True to his word, did want he said he would do. Handled everything, from design, install, plumber, to final regrading. Promptly returned and answer phone calls. He and his crew were professional, and respectful throughout. Excellent to work with."
Recommended by100%of homeowners
Showing 1-10 of 25
Septic Tanks FAQs, answered by experts

Needing to pump the tank as soon as it “looks” full is a common myth about septic systems, as wastewater will eventually drain into the leach field. Instead, it’s better to determine how many solids have accumulated. A septic maintenance technician near you can test this to find out whether pumping is necessary.

Common signs that a septic tank is full include plumbing issues, odors, and changes in your yard. You may notice wastewater or sewage backing up into your home's drains, or that sinks, tubs, and toilets are draining slowly. Gurgling or bubbling sounds from the pipes are also a key indicator. Outside, you might smell foul sewage odors around your house or the septic tank area. Look for pooling water, spongy soil, or a marshy environment around the drain field. Another tell-tale sign is a patch of grass over the septic system that is suddenly lusher and greener than the rest of your lawn. If you notice any of these signs, you should contact a septic professional for an inspection and pumping.

Drain fields often include three to five trenches that are 18 to 24 inches deep. The pipes connecting the drain field to the septic tank will be placed between 12 and 18 inches deep, and the field as a whole will be about 100 feet long.

Although cesspits may be necessary depending on your main sewage system access or nearby soil quality, they carry a few drawbacks. Cesspools require regular emptying and have relatively high maintenance and pumping costs. Certain areas also disallow the use of cesspools and may require you to cover the cost of existing cesspools to be converted into septic tanks.

An outdoor water valve typically has a round or oval handle that you can turn to control the water flow. It may be located in a protective box or pit near the property line, where the main water line connects to your house.

The Harmony, RI homeowners’ guide to septic tank services

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