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TRUSTED BY DURHAM, CT HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon73
    Verified septic tank services reviews

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

John H. Bensavage, LLC
4.9(
98
)
Septic System - Install or ReplaceSeptic System - RepairSeptic System - Install or Replace - For Business+1 more

Serving Durham, CT and surrounding areas

Approved

Super Service Award Winner

In business since 1995

Free estimates

Warranties offered

"Total professionals from beginning to end. We had to have our septic tank replaced quickly because we sold our house. They did an awesome job and I would highly recommend them."
Poly Septic tank replacement
Poly septic tank replacement
Response time8 hrs
23 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for H L Bowman
H L Bowman
4.6(
428
)
Septic Tank - Clean or Pump OutSeptic System - Install or ReplaceSeptic System - Repair

Serving Durham, CT and surrounding areas

Approved (Corporate)

In business since 1946

Free estimates

Emergency services offered

"Replaced a tank water heater, the door was too narrow so first pitched removing framing with no guarantee that it’d be replaced correctly. I suggested using a smaller sized unit based on a quote from another plumber which is the route we went. They also covered the overage for the additional cost of the smaller sized unit which was nice but if I wasn’t aware of the option I’m not sure what I would have done. They also only sent one person initially so I helped bring the old unit down and the new one up in between trying to work. Also the breaker to the hot water heater was never flipped back so I’m waiting to see how the unit performs now."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+6

478 neighbors recently requested a quote
Recommended by86%of homeowners
Avatar for Hazelwood Excavating, Inc.
Hazelwood Excavating, Inc.
5.0(
1
)
Septic System - Install or ReplaceSeptic System - Install or Replace - For Business

Serving Durham, CT and surrounding areas

Approved

In business since 1950

Free estimates

Emergency services offered

Hazelwood Excavating, Inc., is a family owned company based out of Wallingford, CT. The company was founded in 1950 and has been passed down through generation after generation. We take extreme pride in the 3 P's fundamental to any good business which are Punctuality, Professionalism, and Precision.

New Septic Tank
Leaching
New Leaching
Response time2 days
Avatar for O'Hala Sanitation & Environmental
O'Hala Sanitation & Environmental
4.7(
17
)
Septic Tank - Clean or Pump Out

Serving Durham, CT and surrounding areas

In business since 2016

Free estimates

Emergency services offered

"Ryan was professional, extremely knowledgeable, and thorough. He utilized a camera and quickly identified the source of the blockage and pumped the tank. We will definitely use OHala Sanitation to address any future problems and for our annual septic pump service."
Response time3 hrs
Recommended by100%of homeowners
Finkeldey Septic - Facebook
4.9(
4
)
Septic System - Install or ReplaceSeptic System - Install or Replace - For BusinessSeptic System - Repair+3 more

Serving Durham, CT and surrounding areas

In business since 1979

Free estimates

Credit card accepted

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business! \n

Response time5 hrs
Recommended by100%of homeowners
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Septic Tanks FAQs, answered by experts

Yes, shower water goes into the septic tank. Shower water is a type of greywater, and in fact, all water used in a home with a septic system—including water from sinks, toilets, the dishwasher, and the washing machine—drains into the tank. When shower water enters the tank, debris like soap and hair travels with it. The solid debris sinks to the bottom to become sludge, while soap residue joins the scum layer at the top. The remaining water is treated in the tank before moving to the drain field for further treatment and dispersal. It is important to avoid putting oil or harsh chemicals down any drain, as they can cause clogs or disrupt the beneficial bacteria required for proper wastewater management in the septic system.

A well pressure tank typically lasts between 5 and 15 years. However, its lifespan can be influenced by several factors. High-quality, appropriately sized tanks tend to last longer, with some top-of-the-line models lasting up to 30 years. Regular annual maintenance, including inspections, cleaning, and prompt repairs, is crucial for extending the tank's life. Water quality also plays a significant role; water with high levels of sediment, minerals, or rocks can cause premature wear. Overworking an undersized tank can also limit its lifespan.

There are three layers of wastewater in a septic tank: scum (solid waste that floats to the top of the wastewater), liquid (the relatively clean liquid wastewater in between the two other layers), and sludge (solid waste that falls to the bottom of the wastewater). The buildup of sludge is one of the main reasons septic tanks need to be pumped. If the tank is more than 1/3 of the way full with a combination of sludge and scum, it’s time to call a pro for pumping.

Many contractors offer warranties for parts and labor. Confirm terms before hiring.

To determine the right size for your submersible well pump, find your well depth, water demand, and well casing diameter. The pump should match your well's specifications and meet or exceed your drawdown and pressure requirements. 

For precise sizing, make sure to research the different well pump sizes, consult the manufacturer's recommendations, or seek guidance from a professional well pump installer.

The Durham, CT homeowners’ guide to septic tank services

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