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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
Rooterman
4.0(
750
)
Septic System - RepairSeptic System - Repair - For Business

Serving Harmony, RI and surrounding areas

Approved

In business since 2011

Free estimates

Emergency services offered

"I asked for proof of license. It was the first thing presented to me. I was told exactly what they were going to do and they did it. Total job about 2 hours including observing the original tank, driving to purchase replacement tank and return with additional worker and finish install and remover old tank. I might of found a lower price to save maybe a few hundred but sometimes you get what you pay for."
excavation
excavation
excavation
excavation
Response time7 hrs
Recommended by85%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%
Recommended by81%of homeowners
Northern Landscape Corporation
5.0(
6
)
Septic System - Install or ReplaceSeptic System - Repair

Serving Harmony, RI and surrounding areas

Approved

In business since 2024

Free estimates

Credit card accepted

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer’s needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

New Lawn Installation
Response time1 day
Response rate92%
Recommended by16%of homeowners
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
Avatar for Stephen A Almeida Plumbing Co
Stephen A Almeida Plumbing Co
4.9(
65
)
Septic System - Install or ReplaceSeptic System - Install or Replace - For BusinessSeptic System - Repair+3 more

Serving Harmony, RI and surrounding areas

In business since 2011

Free estimates

Credit card accepted

"This is the 3rd time we've had Stephen over to fix something, the previous two being a drain clog after our septic tank was pumped and a leaky copper pipe in our basement ceiling (waste line from the kitchen).  All three times he has responded to my calls at least on the same day if not answering directly, and was great about scheduling.  I don't think the guy ever takes a break.  He checked out this leak on a Saturday after we called on Thursday evening (it was a slow drip that was collecting under our shower that we didn't deem an emergency) and after finding the cause of the leak, came back Monday after a full day and did the valve rebuild at around 5:30 pm.  All three times he was extremely professional, prompt with responses, punctual, and personable (the 4 P's), as well as offering competitive pricing.  We couldn't be happier with the services he has provided us with.
"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+2

Recommended by100%of homeowners
Avatar for Dennis Diffley Drain Services
Dennis Diffley Drain Services
4.7(
128
)
Septic System - Install or ReplaceSeptic System - Install or Replace - For BusinessSeptic System - Repair+3 more

Serving Harmony, RI and surrounding areas

In business since 1976

Free estimates

Credit card accepted

"We initially called on Friday and were advised to contact a local septic pumping company before they would come out.  This was a bit surprising but it had been a couple of years since our last pump and we were probably due.  We had the tank pumped by another company, but that did not resolve the issue (and the septic guy said the tank was not overfilled), so we called Diffley back.  They promptly sent out 2 techs who cleared out the pipe and restored our system to normal.  They were prompt, quick and professional.  I do wish they'd come out when we first called but since we probably needed a pumping anyway it was not a big deal.  We will call them again if we experience any future issues.
"
Additional Photos
High Pressure Water Jetting
Video Camera Inspections
Sewer Connections
Water Line Installation

+1

Recommended by97%of homeowners
Showing 1-10 of 25
Septic Tanks FAQs, answered by experts

Choosing a reliable septic tank company starts by finding an experienced company in your area with positive customer reviews online. You can also use the following tips to help ensure you have a positive experience:

  • Choose a company that is licensed and fully insured

  • Ask the company for customer references

  • Ask if the company provides any guarantee for the repair

  • Determine the provider’s level of experience

They can if they’re not installed correctly or if the caps or covers were dislodged by a lawn mower or other yard equipment. This is why it pays to hire a reputable septic tank company that’s experienced in septic tank installation and maintenance. You should also check caps and covers often to see that they’re in place and take measures to tighten or secure them, provided it is safe to do so.

Yes, septic tank companies must be licensed in most states and municipalities to perform services like installation, alteration, repair, and pumping. Since laws vary by location, it's crucial to check local requirements.

Hiring an unlicensed professional can lead to poor work, code violations, and significant fines. Always verify that your chosen company is properly licensed and fully insured to avoid liability. You can use tools like Angi’s contractor licensing search to check a pro's credentials.

It's also helpful to understand the difference between licensing and certification. A license is a legal requirement to operate, while certifications are voluntary. Credentials like the “Angi Approved” badge indicate that a business meets extra standards, such as passing a background check and maintaining a high rating.

There are many potential causes of low well water pressure. The most common include sediment buildup, leaking pipes, a failing well pump, or a cracked pressure tank. 

Call a dedicated well and pump professional to install your new well pump. In some cases, plumbers may have the experience needed for the installation, but it’s always better to go with a specialized pro. Well and pump contractors have hundreds of hours of experience with all different types of wells and pumps. 

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.