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  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon98
    Verified septic tank services reviews

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Avatar for Derry Plumbing & Heating

Derry Plumbing & Heating

41 Birch St
4.50(
30
)
Approved Pro

Derry Plumbing & Heating

41 Birch St
4.50(
30
)
Approved Pro
Customers say: Quality work
36 years of experience
Free onsite estimate

If you�re familiar with plumbing, you know that doing it right takes just the right recipe: two parts job knowledge and three parts skill. At Londonderry Plumbing and Heating, we provide everything you need to secure the perfect plumbing solution, a mixture that will do you right, just like home cooking! No job is too small or too challenging for our dedicated professionals! Londonderry Plumbing and Heating can tackle your most challenging plumbing problems and do so at affordable rates. If you are looking for a plumber who is highly qualified, quick to respond and a pleasure to do business with, give us a call. We look forward to adding you to our list of satisfied customers!

"Great service! Emergency service and done within the day!"

Bonnie S on May 2025

If you�re familiar with plumbing, you know that doing it right takes just the right recipe: two parts job knowledge and three parts skill. At Londonderry Plumbing and Heating, we provide everything you need to secure the perfect plumbing solution, a mixture that will do you right, just like home cooking! No job is too small or too challenging for our dedicated professionals! Londonderry Plumbing and Heating can tackle your most challenging plumbing problems and do so at affordable rates. If you are looking for a plumber who is highly qualified, quick to respond and a pleasure to do business with, give us a call. We look forward to adding you to our list of satisfied customers!

"Great service! Emergency service and done within the day!"

Bonnie S on May 2025


Avatar for Septic Designs of NH, LLC

Septic Designs of NH, LLC

12 Folsom St
4.75(
25
)
Approved Pro

Septic Designs of NH, LLC

12 Folsom St
4.75(
25
)
Approved Pro
Customers say: Terrific value
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
25 local quotes requested

Septic Designs of NH LLC is a Veteran owned small business with BBB accreditation. We take great pride in our work and are not satisfied until you are. We do Septic Designs, Inspections, Tank Replacements, and Septic Repairs. We also clear main sewer lines and do Trenchless Pipe Repair. Which is a NO DIG solution for pipe replacements. Our jetter is also a HEATED jetter for that tough grease or other buildup where you need some extra hot water to really clean the pipe.

"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."

Vickie C on September 2021

Septic Designs of NH LLC is a Veteran owned small business with BBB accreditation. We take great pride in our work and are not satisfied until you are. We do Septic Designs, Inspections, Tank Replacements, and Septic Repairs. We also clear main sewer lines and do Trenchless Pipe Repair. Which is a NO DIG solution for pipe replacements. Our jetter is also a HEATED jetter for that tough grease or other buildup where you need some extra hot water to really clean the pipe.

"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."

Vickie C on September 2021


Roadway Excavators Inc.

522 Harvey Rd
5.00(
2
)
Approved Pro

Roadway Excavators Inc.

522 Harvey Rd
5.00(
2
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
25 local quotes requested

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

"Replaced leech field- he did an excellent job removing my old leech field and replacing it with a better system. From the time I entered the job in homeadvisor (approx 8am) I was called back before noon. We scheduled a site review later that day. From the time I selected Roadway, there was constant progress. Even when the permits were in progress, they were in constant contact to let me know what was going on. When the permits were in order, they worked nonstop until the job was done. Their work was excellent, prompt and neat. Highly recommend."

Russ R on April 2021

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

"Replaced leech field- he did an excellent job removing my old leech field and replacing it with a better system. From the time I entered the job in homeadvisor (approx 8am) I was called back before noon. We scheduled a site review later that day. From the time I selected Roadway, there was constant progress. Even when the permits were in progress, they were in constant contact to let me know what was going on. When the permits were in order, they worked nonstop until the job was done. Their work was excellent, prompt and neat. Highly recommend."

Russ R on April 2021



Avatar for River View Construction Co.

River View Construction Co.

No reviews yet

River View Construction Co.

No reviews yet

Welcome to River View Construction Co. Established in 2014 - We offer General Contracting, Excavation, Forestry Services, Plowing & Sanding. We are fully insured & reputable. We strive to provide an elite experience, seamless, professional & with sense of urgency.

Welcome to River View Construction Co. Established in 2014 - We offer General Contracting, Excavation, Forestry Services, Plowing & Sanding. We are fully insured & reputable. We strive to provide an elite experience, seamless, professional & with sense of urgency.


Avatar for Busch Site Contracting LLC

Busch Site Contracting LLC

5.00(
4
)

Busch Site Contracting LLC

5.00(
4
)
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Busch Site Contracting, LLC is an excavation contractor proudly serving in New Hampshire & Maine. We strive to not only meet, but exceed the expectations of our clients. Providing premier site work services from excavation, land clearing, utilities and more, we have you covered. We value our client relationships and ensure our priority to deliver seamless, on-time and successful results. We do not offer interior fuel tank removal.

"It went really well, Sean was very helpful and did the job quickly. He was tied up on another job for a while but once he got to our house, he removed the concrete steps quickly and efficiently."

Marc-Anthony S on February 2025

Busch Site Contracting, LLC is an excavation contractor proudly serving in New Hampshire & Maine. We strive to not only meet, but exceed the expectations of our clients. Providing premier site work services from excavation, land clearing, utilities and more, we have you covered. We value our client relationships and ensure our priority to deliver seamless, on-time and successful results. We do not offer interior fuel tank removal.

"It went really well, Sean was very helpful and did the job quickly. He was tied up on another job for a while but once he got to our house, he removed the concrete steps quickly and efficiently."

Marc-Anthony S on February 2025



Avatar for New Hampshire Groundscapes

New Hampshire Groundscapes

73 King Rd
5.00(
2
)

New Hampshire Groundscapes

73 King Rd
5.00(
2
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

NHG is your local excavation & site work company. We offer many different services such as septic system installs/ replacements & designs, site work for new houses, garages, additions & commercial buildings. NHG also provides concrete foundation services. We can accomplish the site work for your project and install the foundation & concrete floor as well. We are your one stop shop!! Other services that we offer are yard/ driveway & parking lot grading/ expansion, stumping, pool pads, tree removal, sink hole dig out & fill, ledge hammering, water/sewer line services/repairs, & much more. We take great pride in providing our customers with very competitive prices and always deliver satisfactory results! Visit our website and Facebook for reviews and pictures of completed and ongoing projects.

"Great. will use them again."

Cheryl D on November 2020

NHG is your local excavation & site work company. We offer many different services such as septic system installs/ replacements & designs, site work for new houses, garages, additions & commercial buildings. NHG also provides concrete foundation services. We can accomplish the site work for your project and install the foundation & concrete floor as well. We are your one stop shop!! Other services that we offer are yard/ driveway & parking lot grading/ expansion, stumping, pool pads, tree removal, sink hole dig out & fill, ledge hammering, water/sewer line services/repairs, & much more. We take great pride in providing our customers with very competitive prices and always deliver satisfactory results! Visit our website and Facebook for reviews and pictures of completed and ongoing projects.

"Great. will use them again."

Cheryl D on November 2020


Avatar for Farrell Contracting Services, LLC

Farrell Contracting Services, LLC

125 High Rd
5.00(
6
)

Farrell Contracting Services, LLC

125 High Rd
5.00(
6
)
Customers say: Quick response
7 years of experience

Services provided include but are not limited to: Site Work, Excavation, Sewer & Water Connections, Utilities , Septic Systems, Culverts and Drainage, Public/Private Driveways & Roads, Material Deliveries (Large or Small Quantities), Trucking, Demolition, Snow Plowing, Lot Clearing, Field Building, Lawn Installation, Grading, Retaining Walls, Ponds, Brush Removal, Stump Removal, Trail Maintenance , Erosion Control, Misc. Property Improvements

"I was building a modular ranch and hired Farrell Contracting to excavate and grade the site as well as install the septic system. Jake is a pleasure to work with and I have no reservations recommending him to others."

Frank L on October 2025

Services provided include but are not limited to: Site Work, Excavation, Sewer & Water Connections, Utilities , Septic Systems, Culverts and Drainage, Public/Private Driveways & Roads, Material Deliveries (Large or Small Quantities), Trucking, Demolition, Snow Plowing, Lot Clearing, Field Building, Lawn Installation, Grading, Retaining Walls, Ponds, Brush Removal, Stump Removal, Trail Maintenance , Erosion Control, Misc. Property Improvements

"I was building a modular ranch and hired Farrell Contracting to excavate and grade the site as well as install the septic system. Jake is a pleasure to work with and I have no reservations recommending him to others."

Frank L on October 2025


LJM Construction, LLC

PO Box 2001
No reviews yet

LJM Construction, LLC

PO Box 2001
No reviews yet

Building lot development-Comm and Res Septic System Installation-NH Licensed Site work and dig foundations (we do not pour) Culvert and road repair General Excavation and Grading Erosion and drainage control Municipal water and sewer Pumping Stations Storm water management Demolition Earth moving Lot clearing and prep Drainage installation Building driveways Stumping LJM Construction and Excavation is located in Hillsborough, NH and has been in operation with over 40 years of experience, a renown leader in the industry. A leading provider for commercial and residential communities throughout the region, LJM services include excavation, foundation and site work, underground utility work, retaining walls, general construction, snow management and more. We take pride in our locally-owned business and our ongoing relationships with our customers, leading to strong customer loyalty. LJM Construction provides personalized attention before, during, and after our service. We believe that our success is based on excellent customer service and quality, timely work. Our goal is to exceed your expectations!

Building lot development-Comm and Res Septic System Installation-NH Licensed Site work and dig foundations (we do not pour) Culvert and road repair General Excavation and Grading Erosion and drainage control Municipal water and sewer Pumping Stations Storm water management Demolition Earth moving Lot clearing and prep Drainage installation Building driveways Stumping LJM Construction and Excavation is located in Hillsborough, NH and has been in operation with over 40 years of experience, a renown leader in the industry. A leading provider for commercial and residential communities throughout the region, LJM services include excavation, foundation and site work, underground utility work, retaining walls, general construction, snow management and more. We take pride in our locally-owned business and our ongoing relationships with our customers, leading to strong customer loyalty. LJM Construction provides personalized attention before, during, and after our service. We believe that our success is based on excellent customer service and quality, timely work. Our goal is to exceed your expectations!

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Septic Tanks questions, answered by experts

No, you cannot have a traditional septic tank without a leach field. Without a field, there would be nowhere for the wastewater to go after it leaves your septic tank. If you don’t have enough room for a full-size leach field, you could consider another type of septic system that doesn’t take up as much space, such as a mound or sand filter system.

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.

There is no standard depth, but typically, septic tanks are buried between 4 inches and 4 feet underneath the earth’s surface. There are a few factors that will determine your tank’s depth, including the height of your bedrock, the distance between your home and the tank, and the depth of your main sewer line.

Septic tanks come in multiple shapes, sizes, and materials. However, they’re often round or rectangular in shape and made from concrete, fiberglass, or plastic. There’s a range of septic tank sizes, with the average model measuring 30 to 40 square feet and holding 1,000 to 1,500 gallons of waste.

The water refills in a well through gravity that draws water from the water table to fill the vertical hole. The pump brings the fresh water through a pressure tank and to the pipes in your house. The well continues to refill indefinitely as long as you don’t use more water than the well is producing.

The Seabrook, NH homeowners’ guide to septic tank services

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