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TRUSTED BY WINDHAM, NH HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon207
    Verified septic tank services reviews

Verified Reviews for Septic Tank Service pros in Windham, NH

*The Angi rating for Septic Tank Service companies in Windham, NH is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Septic Tank Service needs.

*The HomeAdvisor rating for Septic Tank Service companies in Windham, NH is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Septic Tank Service needs.

Last update on February 04, 2026

Find Septic tank pros in Windham

Avatar for Select Excavation & Landscaping, LLC
Select Excavation & Landscaping, LLC
5.0(
18
)
Septic Tank - Clean or Pump OutSeptic System - Install or ReplaceSeptic System - Repair+3 more

Serving Windham, NH and surrounding areas

Approved

In business since 2008

Free estimates

Emergency services offered

"Shane Flagg and his partner Doug (knowledgable retiree) are highly professional. Their work is efficient and complete. Erica Dole (in the office) scheduled the date/time quickly. I value the company for their work and their individual friendliness, and will welcome them back to add a 'riser' to the tank. Thanks to you all. Alan Baker"
Septic Pumping
Connecting Water Services
Connecting Water Services
Septic Pumping
Leach field

+19

5 neighbors recently requested a quote
Recommended by52%of homeowners
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Avatar for Septic Designs of NH, LLC
Septic Designs of NH, LLC
4.5(
29
)
Septic System - Install or ReplaceSeptic System - Install or Replace - For BusinessSeptic System - Repair+1 more

Serving Windham, NH and surrounding areas

Approved

In business since 2007

Free estimates

Emergency services offered

"I called every plumber around and Septic Design of NH had the best price to put a camera down the sewer line. Problem was located in no time."
Septic Inspection
Leach Field
Septic System Distribution Box
Septic Camera
Septic Pipe

+43

Response time6 hrs
Recommended by96%of homeowners
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Tom Howe Septic Systems and Excavation
4.9(
8
)
Septic System - RepairSeptic System - Install or Replace

Serving Windham, NH and surrounding areas

Approved

In business since 1968

Free estimates

Customers say: Quick response

"These guys are the nicest men very thorough with information and honestly one of the best prices I got for my septic I would highly recommend give them Tom a call. Very knowledgeable smart people"
Response time2 days
2 neighbors recently requested a quote
Recommended by85%of homeowners
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Avatar for Innovative Septic Solutions
Innovative Septic Solutions
4.3(
35
)
Septic System - Install or ReplaceSeptic System - RepairSeptic System - Install or Replace - For Business+1 more

Serving Windham, NH and surrounding areas

Approved

Super Service Award Winner

In business since 1985

Free estimates

Emergency services offered

"Innovative Septic Solutions is very professional and efficient. Bob's crew installed our new septic system in three days. Excellent job, thanks!"
Response time2 days
13 neighbors recently requested a quote
Recommended by75%of homeowners
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Roadway Excavators Inc.
5.0(
2
)
Septic System - Install or ReplaceSeptic System - Install or Replace - For Business

Serving Windham, NH and surrounding areas

Approved

In business since 1996

Free estimates

Offers commercial services

Roadway Excavators Inc. is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business

Response time6 hrs
12 neighbors recently requested a quote
Recommended by100%of homeowners
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Avatar for Sewer Surgeons LLC
Sewer Surgeons LLC
5.0(
9
)
Septic System - Install or ReplaceSeptic System - Install or Replace - For BusinessSeptic System - Repair+3 more

Serving Windham, NH and surrounding areas

In business since 2013

Free estimates

Emergency services offered

"I had a drain clog that was becoming a real headache, and Sewer Surgeons took care of it quickly and professionally. The technician was friendly, showed up on time, and explained what was going on without making it complicated. The price was fair, and there were no surprises. The whole process was made easy and overall I would recommend them to anybody in a heart beat."
Septic Repairs
Septic Repairs
Septic Repairs
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Showing 1-10 of 32
Septic Tanks questions, answered by experts

Schedule annual inspections, test water pressure, and protect the pump from freezing temperatures.

While mound septic systems can provide cost-effective wastewater treatment in many instances, they do come at a significant initial installation cost and require a lot of space on your property for the mound and its replacement field. The installation cost is so high because this is a project that requires an exceptional level of skills and expertise to execute properly.

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.

You can find your septic tank using a few different methods. For one, you can check your property records at your local municipal office. You can also inspect your yard looking for a depression, a septic tank lid, or lush septic-area vegetation which would indicate a leach field. You can also follow your pipes from the home to the yard. If you can't find your septic tank on your own, a local septic pro can help.

Conventional anaerobic septic systems are the most cost-effective and least expensive type, with installation costs typically ranging from $3,000 to $8,000. For comparison, sand filter systems cost between $7,000 and $18,000, while mound systems are the most expensive at $10,000 to $20,000. Several factors influence the final price. The tank material is a key consideration; plastic tanks are the most budget-friendly option, starting around $2,900, but concrete and fiberglass tanks offer greater durability and longer life spans at a higher cost. The size of the tank also affects the price. For example, a 1,000-gallon tank costs between $900 and $1,500, whereas a larger 1,500-gallon tank costs $1,500 to $2,500.

The Windham, NH homeowners’ guide to septic tank services

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

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