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TRUSTED BY WELLESLEY, MA HOMEOWNERS

  • Average homeowner rating star icon4.9
    Average homeowner rating
  • Verified reviews icon16
    Verified septic tank services reviews

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

ALL IN ONE DRAIN CLEANING INC
4.1(
111
)
Septic System - RepairSeptic System - Repair - For BusinessSeptic Tank - Clean or Pump Out+1 more

Serving Wellesley, 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 Schofield Environmental
Schofield Environmental
4.2(
9
)
Septic System - Install or Replace

Serving Wellesley, 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 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 Wellesley, 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 Wellesley, MA and surrounding areas

Approved

In business since 1997

Free estimates

Emergency services offered

"I was in desperate need for someone to connect my gas dryer for me & remove the old gas dyer. I rang Rick & told him what I needed, I sent him an email confirming all my information & within minutes Rick had answered & confirmed what time he would be at my home. Rick was courteous, on time & knowledgeable. Will definitely hire again."
Response time2 days
17 neighbors recently requested a quote
Recommended by84%of homeowners
Avatar for Provost Plumbing
Provost Plumbing
4.6(
155
)
Septic System - Install or ReplaceSeptic System - Install or Replace - For BusinessSeptic System - Repair+3 more

Serving Wellesley, MA and surrounding areas

In business since 1960

Free estimates

Emergency services offered

"At first it was suggested that the whole commode be replaced, but it was found out that the bowl was intact and that only the tank be replaced. This replacement was done and the new unit worked fine and nothing else was needed to be done. Great service, good workmanship and will recommend this company to others."
Recommended by90%of homeowners
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Septic Tanks FAQs, answered by experts

A mound septic system, when properly maintained, can last between 20 and 25 years on average—though some last longer or malfunction sooner than that. The most important part of maintenance is getting an annual inspection of the vital parts of the system to ensure they’re in proper working order and not too backed up with sewage.

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.

A household of four can easily fill a 1,000-gallon septic tank within a week. It may be 10 to 14 days for smaller households. But the reason why you don't need weekly pumping is because the tank's contents eventually reach the overflow pipe. They flow down this pipe to the absorption area whenever water is used in your home. The tank keeps working at this full level until it's pumped again.

The best bacteria to add to a septic tank is anaerobic bacteria, which doesn't use oxygen to break down solid waste. Because there is less oxygen in a septic tank, anaerobic bacteria can decompose sludge in a sealed environment. On the other hand, aerobic bacteria need oxygen and are prevalent in the leach or drain field of a septic system.

A septic tank with a 1,500-gallon capacity is good for larger homes with up to 6 or 7 bedrooms. The average home can go with a smaller tank, about 1,000 gallons, which supports a home size of up to 2,500 square feet, or a home with about three bedrooms.

The Wellesley, MA homeowners’ guide to septic tank services

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