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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

Avatar for A.D.B. Construction & Septic Corp.
A.D.B. Construction & Septic Corp.
4.6(
217
)
Septic System - Install or ReplaceSeptic System - Repair

Serving Durham, CT and surrounding areas

Approved

In business since 2000

Free estimates

Emergency services offered

"Justin answered my telephone messages within 15 minutes each time and was service and cost specific. Chris was professional and committed to resolving and testing our septic tank issue before leaving on a Sunday evening! Exceptional service -- highly recommend! Thank you to Home Advisors."
 Curtain Drain
 Sewer line replacment
 footing drains around an oil tank
 Sewer line repair
 Stone added

+33

Response time8 hrs
10 neighbors recently requested a quote
Recommended by97%of homeowners
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

"Great experience Justin, Nate & Timothy were awesome. Very knowledgeable, professional & curious. Aside from the cleanliness they delivered an experience. I highly recommend HL bowman if you want rapid service on your HVAC. Pricing was reasonable in my opinion & financing is an option. Keep in mind when seeking quotes for your HVAC repair/ new install you must consider performance over equipment, that is if your want a good system that will have a good run/life span."
Additional Photos
Additional Photos
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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
Showing 1-10 of 30
Septic Tanks FAQs, answered by experts

Yes, experts handle manual pumping, chemical flushing, and equipment use properly, ensuring thorough cleaning and legal compliance with disposal regulations.

A septic tank riser should extend to just above the ground level or slightly above it. The exact height can vary depending on local regulations and personal preferences, but a common guideline is to have the riser's top flush with or no more than a few inches above the surrounding ground. This height allows for easy access to the septic tank without creating a tripping hazard or obstructing mowing and landscaping activities. It's essential to ensure that the riser lid is easily visible and accessible for regular maintenance and inspection while being mindful of safety and aesthetics.

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 pressure in a well pressure tank should be set 2 to 3 PSI below the pump's cut-on pressure. The cut-on pressure is the lower number in the pressure setting (e.g., the '30' in 30/50 PSI) and is the point at which the pump starts. The cut-out pressure is the higher number, where the pump stops.

For example:

  • If your pressure switch is set to 30/50 PSI, the tank pressure should be 27-28 PSI.

  • If your pressure switch is set to 40/60 PSI, the tank pressure should be 38 PSI.

Common pressure settings for household applications include 20/40, 30/50, and 40/60 PSI. The difference between the cut-on and cut-out pressure is typically 20 PSI.

The smallest septic system available for purchase typically includes a 750-gallon tank. However, the smallest size you can legally install is determined by local regulations, and many areas require a minimum capacity of 1,000 gallons. The cost to install a small septic system generally ranges from $2,910 to $13,900. Before proceeding, it is essential to check with your local health department or consult a local septic professional to confirm the minimum legal requirements in your area.

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.