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TRUSTED BY MENDON, MA HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon94
    Verified septic tank services reviews

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

Avatar for Blackstone Septic Service
Blackstone Septic Service
4.8(
23
)
Septic System - Repair - For BusinessSeptic Tank - Clean or Pump Out

Serving Mendon, MA and surrounding areas

Approved

In business since 2022

Free estimates

Credit card accepted

"Everything was fine. Responsive to texts/calls, flexible with times and unexpected need to reschedule. Friendly , knowledgeable and answered the questions I had. Other than the price ( $350 for a 1500 gal tank) which seemed a bit steep, I’d use them again. Granted, it’s been several years since last clean out, so like everything else, I suppose the rates have gone up"
Response time10 hrs
Recommended by94%of homeowners
ALL IN ONE DRAIN CLEANING INC
4.1(
111
)
Septic System - RepairSeptic System - Repair - For BusinessSeptic Tank - Clean or Pump Out+1 more

Serving Mendon, MA and surrounding areas

Approved

In business since 2009

Credit card accepted

Offers commercial services

All In One Drain Cleaning is your local drain cleaning professional serving homeowners and businesses within and around the Worcester county area. We specialize in hydro jet technology and performance. Please allow us to help you in your time of need and you can rest assured that your plumbing drain problem will be handled by a seasoned professional with over 25 years of professional experience.

Recommended by90%of homeowners
Avatar for Drain Brains LLC
Drain Brains LLC
5.0(
13
)
Septic System - Repair

Serving Mendon, MA and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

"Andrew did a great job fixed my upstairs toilet, had other plumbers try to figure out why the toilet wouldn't drain, Andrew used a camera in the main drain and found the problem. Awesome job, we are all set with the toilet and he checked the whole house for any other issues. We will use Andrew in the future, we highly recommend his services."
Sumpump
Drain clogs
Drain clogs
Drain clogs
Drain clogs

+49

24 neighbors recently requested a quote
Avatar for Schofield Environmental
Schofield Environmental
4.2(
9
)
Septic System - Install or Replace

Serving Mendon, MA and surrounding areas

Approved

In business since 1999

Free estimates

Credit card accepted

"By Andrew v. Engineer Dave Schofield of Capstone displayed professionalism by turning a flawed design for our Sudbury septic system into one highly adaptive and functional. He was purposeful about doing the right thing even when not winning installation contract, execution of which he in in fact supervised. In a business which includes its share of uneven performers, Schofield’s competence is a stand-out."
Response time4 hrs
Response rate100%
Recommended by55%of homeowners
Avatar for Barrows Contracting, Inc.
Barrows Contracting, Inc.
3.7(
60
)
Septic System - Install or ReplaceSeptic System - RepairSeptic System - Install or Replace - For Business+1 more

Serving Mendon, MA and surrounding areas

Approved

In business since 2004

Free estimates

Offers commercial services

"Barrows Contracting did an exceptional job on a complete replacement of our existing septic system. Glenn and his team were extremely professional and considerate throughout the process. They had a tight area to work in and they were able to take down a large tree and preserve a stone wall saving us time and money. They ran into ledge when installing the new larger tank. No problem, they were able to split the ledge and remove it the next day. The finished yard grading looks better than before the project started. They were on time and on budget, true to their estimate. This is a large ticket project and I would highly recommend Barrows Contracting for any septic repair or replacement needs. I like that they are a locally owned family business."
Response time3 hrs
7 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Nicholson Heating, Cooling, Plumbing & Electrical
Nicholson Heating, Cooling, Plumbing & Electrical
4.0(
2
)
Septic System - Install or ReplaceSeptic System - RepairSeptic Tank - Clean or Pump Out

Serving Mendon, MA and surrounding areas

Approved

In business since 2009

Free estimates

Emergency services offered

"After a phone call with a representative that called me and discussion of the work I was looking for, and mentioning a number of times the work involved a site visit was scheduled. When the service person came to do an onsite evaluation, I was told: 'we don't do oil tank removals and installs.' Representative was obviously not trained for what I had requested during our phone conversation and that Nicholson Heating, Cooling, Plumbing and Electrical didn't do this service or wasn't informed of it during training."
Nicholson Tech and homeowner near water heater
2 neighbors recently requested a quote
Recommended by100%of homeowners
Pisano's Odd Jobs and Appliances
3.3(
47
)
Septic System - Install or ReplaceSeptic System - Install or Replace - For BusinessSeptic System - Repair+3 more

Serving Mendon, MA and surrounding areas

Approved

In business since 1997

Free estimates

Emergency services offered

"We had a serious water heater leak throughout 4 rooms. Rick had the floor dismantled and replaced - better than it had been originally. The original installers had not staggered the planks — he did and the floors look better than ever. Rick and the men who did the work couldn't have been more professional while getting the job done!! So happy with the results that I would definitely hire Rick again for any future work needing to be done!"
Response time2 days
17 neighbors recently requested a quote
Recommended by84%of homeowners
Avatar for GEM Plumbing & Heating
GEM Plumbing & Heating
5.0(
1
)
Septic System - Repair

Serving Mendon, MA and surrounding areas

Approved

In business since 1949

Free estimates

Emergency services offered

With over 75 years of experience, GEM provides reliable plumbing services for homeowners in Raynham, MA and nearby areas like Taunton, Bridgewater, and Easton. Our licensed plumbers handle everything from leak repairs and drain cleaning to water heaters, fixture installations, and fast emergency plumbing response.\n\nWhether you're dealing with a burst pipe or clogged drain, we respond quickly with dependable solutions to keep your home running smoothly—day or night.

New Thermostat
After
Before
During Removal
During Removal

+16

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Septic Tanks FAQs, answered by experts

Most shallow residential wells are somewhere between 25 and 50 feet deep. They are among the simplest well systems. Deeper wells usually involve drilling to a much greater depth. Water wells for household use are typically 100 to 500 feet deep, depending on local groundwater conditions. Some may be up to 1,000 feet deep or more. 

The bacteria already present in your septic system should be enough to break down solids in a properly maintained septic tank. However, if you’re in a DIY mood, you can try adding (well-mashed) rotten tomatoes to help the good bacteria fulfill their duty. Just make sure you give them a couple hours to work after flushing them down.

The best times of year to pump or empty a septic tank are spring and fall. Many professionals recommend spring because the ground has thawed, making the tank easier to access, and any snowmelt or rainfall can aid in proper drainage. Pumping before summer is also ideal to avoid conflicts with vacations or outdoor gatherings.

Fall is another great option, as contractors may be less busy than in the spring. Servicing the tank in late fall or early spring can also reduce the risk of overflow from extra precipitation during winter and spring.

While summer is a possibility, winter is generally not recommended. The ground is often frozen, which can make it difficult to access the tank, and the waste inside may also be frozen.

Since vinegar is a weak acid with a pH of two to three, it’s generally safe for septic systems. It won’t eat away at the good bacteria in your septic tank and can help break down the sludge, which is its bottom layer. However, like with everything in life, moderation is key.

The size of your septic tank plays a role in determining the proper size of the drain or leach field. As a general rule, you should have 1 square foot of drain field size per gallon of septic tank capacity. However, you could install a leach field that’s as much as 2.5 square feet per gallon of septic tank capacity. Most professionals determine the right septic tank size and drain field size by the number of bedrooms in the house. A three-bedroom house needs a minimum 1,000-gallon septic tank, for example.

The Mendon, MA homeowners’ guide to septic tank services

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