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TRUSTED BY WINDHAM, NH HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon208
    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

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

Avatar for Select Excavation & Landscaping, LLC
Select Excavation & Landscaping, LLC
5.0(
18
)
Septic Tank - Clean or Pump OutSeptic System - RepairSeptic System - Install or Replace+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

7 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
3 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
12 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
10 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 FAQs, answered by experts

Your septic tank naturally contains the beneficial bacteria it needs to function, so you typically don't need to add more. However, if you wish to replenish the bacteria, you can use natural methods. For example, you can add three overripe tomatoes to your garbage disposal or flush 1/4 ounce of active yeast down the toilet every three months. While store-bought septic enzymes and chemicals are available, many experts consider them unnecessary and potentially harmful. The most effective way to maintain a healthy bacteria population is to avoid using chemical drain cleaners, which can kill the good bacteria in your system.

The depth of your septic tank has nothing to do with its size. In fact, some septic tanks can even be installed above-ground! Like other sizes, a 1,000-gallon septic tank could be buried as shallow as 4 inches below the ground or as deep as 4 feet. It all depends on your specific property.

The lifespan of your well casing depends mainly on the material it’s made from. Stainless steel and galvanized steel casings are designed to withstand the pressures and environment of deep-water wells but are susceptible to corrosion. Most steel casings last from 20 to 35 years, on average. PVC casing is highly durable and, if used correctly, can last up to 50 years.

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.

You should never park or drive on top of a septic field. Vehicles can weigh upwards of two tons, and this weight can put a lot of pressure on the leach lines in the drain field. Too much pressure on your leach lines may cause them to warp, crack, or completely burst. This is an expensive and very avoidable problem.

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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