Finding a reliable New Hampshire septic system installation expert is essential for homeowners and businesses. Septic systems in NH must meet NH septic tank regulations and obtain approval through the septic permitting process in New Hampshire to ensure proper wastewater management. Whether you need a new system, repairs, or an inspection, hiring a licensed professional helps avoid costly mistakes and ensures compliance with state and local codes.

New Hampshire’s diverse landscape, from the rocky terrain of the White Mountains to the sandy coastal areas, creates unique challenges for septic installation. Proper soil testing and site evaluation are necessary for choosing the right system, including NH alternative septic systems for properties with poor drainage or environmental restrictions. Cold winters also impact system longevity, making proper design and insulation crucial.

This directory connects you with the best septic contractors in New Hampshire offering residential septic services in NH, New Hampshire commercial septic installation, and environmentally friendly septic systems in NH. Whether you need installation, repairs, or maintenance, you’ll find experienced professionals who specialize in meeting local regulations and environmental needs. Browse by region to find a trusted septic expert near you.

Table of Content

• Belknap County
• Carroll County
• Cheshire County
• Coös County
• Grafton County
• Hillsborough County
• Merrimack County
• Rockingham County
• Strafford County
• Sullivan County

New Hampshire

Belknap County

Able Septic Service

• Contact Phone: 603-528-2783
• Email Address: bjbedard21_ableseptic@outlook.com
• Website: https://www.ablesepticnh.com
• Physical Address: 53 Sanborn St, Laconia, NH 03246
• Services Offered: Septic tank pumping, septic system repair and installation, pump sales and installation
• Specialties or Unique Capabilities: Serving industrial, residential, and commercial clients with honest evaluations
• Years in Business: Since 1986

Hinds Septic Design Services, LLC

• Contact Phone: (603) 387-8275
• Email Address: info@hindssepticdesign.com
• Website: https://hindssepticdesign.com
• Physical Address: 49 Lawndale Ave., Franklin, NH 03235
• Services Offered: Septic system design, NHDES Shoreland and Wetland permitting, site assessments
• Specialties or Unique Capabilities: Expertise in residential, waterfront, and small commercial septic design projects
• Years in Business: Over 30 years of experience

Article: New Hampshire Septic License

South Branch Septic™

• Contact Phone: 603-236-1334
• Email Address: southbranchseptic@gmail.com
• Website: https://nhsepticinspector.com/septic-installation-repair
• Physical Address: Not specified
• Services Offered: Septic system installation and repair, septic tank replacements, Presby Enviro-Septic rejuvenations
• Specialties or Unique Capabilities: Licensed NH Septic Installers and Evaluators, fully insured
• Years in Business: Not specified

Morrison Construction LLC

• Contact Phone: 603-744-2290
• Email Address: Contact
• Website: https://morrisonconstruction-llc.com/septic-system-design-installation
• Physical Address: J.P. and Joe Morrison 30 Bristol Hill Road Bristol, NH 03222
• Services Offered: Septic system design and installation, site evaluations
• Specialties or Unique Capabilities: Certified to install septic systems in New Hampshire
• Years in Business: Not specified

B & S Septic Services

• Contact Phone: 603-435-8828
• Email Address: Not specified
• Website: Not available
• Physical Address: Pittsfield, NH 03263
• Services Offered: Septic tank pumping, installation and repair, portable toilet rentals
• Specialties or Unique Capabilities: Offers senior discounts
• Years in Business: Not specified

Article: Benefits of Bacterial Septic Additives

Extreme Excavation

• Contact Phone: 603-527-3789
• Email Address: Not specified
• Website: Not available
• Physical Address: PO Box 6308, Laconia, NH 03247-6308
• Services Offered: Excavating services, septic tank installation and repair
• Specialties or Unique Capabilities: Not specified
• Years in Business: Not specified

Del R Gilbert & Son Block Co., Inc.

• Contact Phone: 603-524-1353
• Email Address: Not specified
• Website: Not available
• Physical Address: 427 Province Road, Laconia, NH 03246
• Services Offered: Concrete blocks, septic tank services
• Specialties or Unique Capabilities: Not specified
• Years in Business: Not specified

Shute Construction, LLC

• Contact Phone: 603-267-6680
• Email Address: Not specified
• Website: Not available
• Physical Address: 24 Lakeshore Dr, Gilmanton, NH 03237
• Services Offered: Construction services, septic tank installation and repair, landscape supply
• Specialties or Unique Capabilities: Not specified
• Years in Business: Not specified

Carroll County

West Ossipee Region

Bob’s Septic Service

• Contact Phone: (603) 539-7190​
• Email Address: info@bobssepticservices.com
• Website: https://bobssepticservices.com/
• Physical Address: 57 Old Mill Road, West Ossipee, NH 03890​
• Services Offered: Septic tank pumping​
• Specialties or Unique Capabilities: Not specified​
• Years in Business: Since 1998​

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Moultonborough Region

South Branch Septic™

• Contact Phone: (603) 236-1334​
• Email Address: southbranchseptic@gmail.com​
• Website: https://nhsepticinspector.com/​
• Physical Address: Not specified​
• Services Offered: Septic system installation and repair, septic tank replacements, Presby Enviro-Septic rejuvenations, septic system inspections, video inspections, system location, septic tank pumping, excavation services​
• Specialties or Unique Capabilities: Licensed NH Septic Installers (#5637) and Septic System Evaluators (#132), fully insured​
• Years in Business: Not specified​

Farmington Region

B.H. Cameron Septic Services LLC

• Contact Phone: (603) 755-2110
• Email Address: Contact
• Website: https://bhcameron.com/
• Physical Address: Farmington, NH 03835
• Services Offered: Septic pump and grease trap cleaning for residential and commercial clients​
• Specialties or Unique Capabilities: Several cities in NH
• Years in Business: Not specified​

Central New Hampshire Region

Hinds Septic Design Services, LLC

• Contact Phone: 603-387-8275
• Email Address: info@hindssepticdesign.com
• Website: https://hindssepticdesign.com/​
• Physical Address: 49 Lawndale Ave., Franklin, NH 03235​
• Services Offered: Septic system design, NHDES Shoreland and Wetland permitting, site assessments​
• Specialties or Unique Capabilities: Expertise in residential, waterfront, and small commercial septic design projects​
• Years in Business: Over 30 years of experience

Cheshire County

Swanzey Region

Freihofer Septic Design

• Contact Phone: 603-209-1221
• Email Address: Not specified
• Website: https://www.freihofersepticdesign.com/
• Physical Address: 30 Birch Road, Swanzey, NH 03446
• Services Offered: Septic system design, septic system inspections, permitting assistance for lakefront properties, Fuji Clean advanced treatment tank distribution
• Specialties or Unique Capabilities: Specializes in residential and commercial septic systems, assists with NH shoreland permitting, distributes Fuji Clean advanced treatment tanks to designers and installers in NH and VT

Fitzwilliam Region

Monadnock Septic Design

• Contact Phone: 603-585-2272
• Email Address: Not specified
• Website: https://www.monadnocksepticdesign.com/
• Physical Address: Royalston Road, Fitzwilliam, NH 03447
• Services Offered: Septic system design (including Stone and Pipe, Trench, Chambers, Enviro-Septic, Advanced Enviro-Septic, Eljen, and Wastewater Alternatives), site evaluations, deed research
• Specialties or Unique Capabilities: Uses survey equipment for topography mapping, designs a variety of septic systems
• Years in Business: Since 1969

Keene Region

SewerMan of Keene, NH

• Contact Phone: 603-357-6050
• Email Address: Contact
• Website: https://sewerman.com/keene-nh/services/septic-system-services/
• Physical Address: Keene, NH
• Services Offered: Septic system design and installation
• Specialties or Unique Capabilities: Uses state-of-the-art technologies for long-lasting septic systems

Coös County

Colebrook Region

North Country Excavation & Septic

• Contact Phone: 603-246-2218
• Email Address: info@northcountryexcavationseptic.com
• Website: https://www.northcountryexcavationseptic.com/
• Physical Address: Colebrook, NH 03576
• Services Offered: Septic system installations, repairs, maintenance, excavation, grading
• Specialties or Unique Capabilities: 29 years of experience, specializes in systems designed for future property development

Leo Mackinnon

• Contact Phone: 603-237-8873
• Email Address: Not specified
• Website: Not specified
• Physical Address: 9 Mackinnon Road, Colebrook, NH 03576-3301
• Services Offered: Septic tank pumping, septic system construction
• Specialties or Unique Capabilities: Not specified

Central New Hampshire Region

Hinds Septic Design Services, LLC

• Contact Phone: (603) 387-8275
• Email Address: info@hindssepticdesign.com
• Website: https://hindssepticdesign.com/
• Physical Address: Central New Hampshire
• Services Offered: Septic system design, lakefront site assessments, NHDES Shoreland and Wetland permitting
• Specialties or Unique Capabilities: 30+ years of experience, uses robotic total station and CAD software

South Branch Region

VLK Septic / South Branch Septic, LLC

• Contact Phone: 603-236-1334
• Email Address: jvlkseptic@gmail.com
• Website: https://nhsepticinspector.com/
• Physical Address: Not specified
• Services Offered: Septic system inspections, installations, repairs, maintenance, video inspections, system location, excavation
• Specialties or Unique Capabilities: Provides emergency services, serves residential and commercial clients

Grafton County

VLK Septic

• Contact Phone: 603-236-1334
• Email Address: jvlkseptic@gmail.com
• Website: nhsepticinspector.com
• Physical Address: Not specified
• Services Offered: Septic system inspections, video inspections, system location, system installation and repairs, septic tank pumping, excavation
• Specialties or Unique Capabilities: Comprehensive septic system care, including emergency services
• Years in Business: Not specified

Hinds Septic Design Services, LLC

• Contact Phone: (603) 387-8275
• Email Address: Not specified
• Website: hindssepticdesign.com
• Physical Address: 49 Lawndale Ave., Franklin, NH 03235
• Services Offered: Septic system design, lakefront site assessments, NHDES Shoreland and Wetland permitting
• Specialties or Unique Capabilities: Over 30 years of experience in site development; expertise in residential, waterfront, and small commercial septic systems
• Years in Business: Since 2002

Morrison Construction LLC

• Contact Phone: 603-744-2290
• Email Address: Contact
• Website: morrisonconstruction-llc.com
• Physical Address: Not specified
• Services Offered: Septic system design and installation, site evaluations
• Specialties or Unique Capabilities: Certified to install septic systems in New Hampshire
• Years in Business: Not specified

Grade On Excavation

• Contact Phone: (603) 837-2451
• Email Address: Not specified
• Website: gradeonnh.com
• Physical Address: 183 Colby Rd, Whitefield, NH 03598
• Services Offered: Septic system design and installation, site evaluation, excavation, grading, foundation excavation, utility ditches, driveway and road construction, retaining walls, demolition, lot clearing, drainage, sand and gravel
• Specialties or Unique Capabilities: Comprehensive site development services; formerly WRS Excavation
• Years in Business: Not specified

Decosta Construction, LLC

• Contact Phone: 603-726-7200
• Email Address: Contact
• Website: decostabuilders.com
• Physical Address: 1411 NH Route 175 Campton, NH 03223
• Services Offered: Septic system installation
• Specialties or Unique Capabilities: Certified installer of subsurface disposal systems in New Hampshire; over 20 years of experience
• Years in Business: Not specified

Hillsborough County

Townes Septic Service

Contact Phone: (603) 759-0562
Email Address: Not provided
Website: https://www.townesseptic.com/hillsborough-county-septic-service
Physical Address: Not provided
Services Offered: Septic system installation, septic tank repairs, septic tank pumping, sewer line cleaning, septic inspection, sewer camera inspection, septic tank maintenance, emergency septic service, septic system design, commercial septic service, frozen sewer pipe repair
Specialties or Unique Capabilities: Over 60 years of experience, family-owned company, 24/7 emergency services, free quotes
Years in Business: Over 60 years

RCI Septic Services

Contact Phone: (603) 432-4840
Email Address: Not provided
Website: https://www.rciseptic.com/
Physical Address: Not provided
Services Offered: Septic tank pumping, septic system installation, septic repair, septic clean-out
Specialties or Unique Capabilities: Family-owned and operated for four generations, expertise in residential and commercial septic systems, serving Southern New Hampshire and surrounding areas
Years in Business: Over 25 years

LJM Construction

Contact Phone: (603) 478-2833
Email Address: Not provided
Website: https://ljmconstrx.com/services/septic-work/
Physical Address: 100 Hall Rd, Hillsboro, NH 03244
Services Offered: Septic system installation and replacement, excavation, site work, road construction, demolition
Specialties or Unique Capabilities: Licensed septic installer since the early 1990s, works with the New Hampshire Department of Environmental Services for system approvals
Years in Business: Over 30 years

Hinds Septic Design Services, LLC

Contact Phone: (603) 387-8275
Email Address: Not provided
Website: https://hindssepticdesign.com/
Physical Address: Not provided
Services Offered: Septic system design for residential, waterfront, and small commercial projects; NHDES Shoreland and Wetland permitting; site assessments
Specialties or Unique Capabilities: Over 30 years of experience in site development; owner is former President of Granite State Onsite Wastewater Association and former member of New Hampshire Water Council
Years in Business: Since 2002

Felix, A Wind River Company

Contact Phone: 603 – 945 7355
Email Address: Contact
Website: https://www.wrenvironmental.com/southeast-new-hampshire/
Physical Address: Not provided
Services Offered: Septic pumping, septic system repair
Specialties or Unique Capabilities: Experience in residential and commercial septic systems; commitment to customer service; serves Southeast New Hampshire
Years in Business: Not specified

Merrimack County

Townes Septic Service

Contact Phone: (603) 759-0562
Email Address: bowsertownes@gmail.com
Website: https://www.townesseptic.com/merrimack-county-septic-service
Physical Address: 112 Grandview Drive, Weare, NH, 03281
Services Offered: Septic system installation, septic tank pumping, sewer line cleaning, septic inspection, sewer camera inspection, septic tank maintenance, septic tank repair, emergency septic service, septic system design, commercial septic service, frozen sewer pipe repair
Specialties or Unique Capabilities: Over 60 years of experience, family-owned company, 24/7 emergency services, free quotes
Years in Business: Over 60 years

Souhegan Septic

Contact Phone: 603-673-4711
Email Address: info@souheganseptic.com
Website: https://souheganseptic.com/
Physical Address: Not provided
Services Offered: Septic pumping and cleaning, line unclogging and jetting, catch basin cleaning, grease trap cleaning, baffle replacement and repair, riser cover and installation, hydro excavation, septic maintenance, filter cleaning and replacement, camera inspection, pipe relining, pipe thawing
Specialties or Unique Capabilities: Family-owned and operated, comprehensive septic services, hydro excavation. 24-7
Years in Business: Since 1978

Garside Septic & Excavation LLC

Contact Phone: (603) 432-9300
Email Address: Contact
Website: https://garsideseptic.com/septic-system-installations/
Physical Address: 6 Able St. Hudson NH 03051
Services Offered: Septic system installations
Specialties or Unique Capabilities: Trusted provider of septic system installations across Southern New Hampshire. 24/7
Years in Business: 40 years

Hinds Septic Design Services, LLC

Contact Phone: (603) 387-8275
Email Address: Not provided
Website: https://hindssepticdesign.com/
Physical Address: Not provided
Services Offered: Septic system design for residential and small commercial projects, lakefront site assessments, NHDES Shoreland and Wetland permitting
Specialties or Unique Capabilities: Over 30 years of experience in site development, utilization of robotic total station and CAD software for efficient project execution
Years in Business: Since 2002

Sarette Excavation

Contact Phone: 603.668.1179
Email Address: Not provided
Website: https://saretteexcavation.com/septic_systems.php
Physical Address: 282 Goffstown Back Rd. Goffstown, NH 03045
Services Offered: Septic system design and installation, connection to town sewer systems
Specialties or Unique Capabilities: New Hampshire licensed septic designer, expertise in planning and executing various septic system designs and installations
Years in Business: Not specified

RCI Septic Service

Contact Phone: (603) 432-4840
Email Address: Not provided
Website: https://www.rciseptic.com/merrimack-nh-septic-pump-out-service
Physical Address: Not provided
Services Offered: Septic tank pumping, septic system inspection, filter cleaning, septic tank cleaning
Specialties or Unique Capabilities: Family-owned and operated for four generations, serving Southern New Hampshire and surrounding areas, detailed service reports
Years in Business: Over 25 years

Felix, A Wind River Company

Contact Phone: 603- 9457355
Email Address: Contact
Website: https://www.wrenvironmental.com/southeast-new-hampshire/
Physical Address: Not provided
Services Offered: Septic pumping, septic system repair
Specialties or Unique Capabilities: Experience in residential and commercial septic systems, commitment to customer service, serving Southeast New Hampshire
Years in Business: Not specified

Rockingham County

Bodwell’s Septic Service

Contact Phone: (603) 772-3494
Email Address: Not provided
Website: Not provided
Physical Address: 96 North Rd, East Kingston, NH 03827
Services Offered: Septic system installation, septic tank pumping, septic system repairs
Specialties or Unique Capabilities: Family-owned and operated, serving the local community with reliable septic services
Years in Business: Not specified

Bonser & Son Septic and Sewer Systems Repair

Contact Phone: (603) 679-2036; (603) 502-5375 (Cell)
Email Address: bonser@yahoo.com
Website: https://www.bonserandson.com/
Physical Address: 24 Smoke Street, Nottingham, NH
Services Offered: Septic system repair, sewer system repair
Specialties or Unique Capabilities: Serving Rockingham and Strafford Counties, NH; experienced in both septic and sewer system repairs
Years in Business: Not specified

B.H. Cameron Septic Services LLC

Contact Phone: (603) 755-2110
Email Address: Contact
Website: https://bhcameron.com/
Physical Address: Farmington, NH
Services Offered: Septic system installation, septic tank pumping, septic system repairs
Specialties or Unique Capabilities: Serving Farmington and surrounding counties, including Rockingham County
Years in Business: Not specified

Eastman’s Excavation, Septic & Drain

Contact Phone: (207) 252-5906
Email Address: info@eastmanexcavation.com
Website: https://www.eastmanexcavation.com/
Physical Address: North Berwick, ME
Services Offered: Septic system installation, septic system repair, excavation services, drainage services
Specialties or Unique Capabilities: Serving Southern York County, ME, and Southern Strafford and Rockingham County, NH; expertise in various septic system designs, including advanced systems
Years in Business: Not specified

Bob’s Septic Service

Contact Phone: (603) 642-5326
Email Address: Not provided
Website: https://bobssepticservices.com/
Physical Address: Not provided
Services Offered: Septic system design, septic system installation, septic tank pumping, septic system maintenance
Specialties or Unique Capabilities: Licensed by the State of NH-Dept. of Environmental Services for wastewater removal and transport; serving the NH Seacoast area and Rockingham County
Years in Business: Not specified

Top Dog Sewer & Drain

Contact Phone: (603) 217-5209
Email Address: Not provided
Website: https://www.topdogsewer.net/
Physical Address: Not provided
Services Offered: Leach field rejuvenation, septic system repair, sewer and drain cleaning
Specialties or Unique Capabilities: Offers leach field rejuvenation to repair failing septic systems, potentially saving on the cost of total replacement
Years in Business: Not specified

B. Barker Excavating

Contact Phone: (603) 674-8709
Email Address: Not provided
Website: https://www.bbarkerexcavating.net/
Physical Address: Hampton, NH
Services Offered: Septic system installation, foundation preparation, soil stabilization, leveling and grading, demolition services, helical pile installation
Specialties or Unique Capabilities: Over 20 years of septic system installation experience; serves both commercial and residential clients in the Rockingham County area
Years in Business: Over 20 years

Strafford County

B.H. Cameron Septic Services LLC

Contact Phone: (603) 755-2110
Email Address: Contact
Website: https://bhcameron.com/
Physical Address: Farmington, NH
Services Offered: Septic system installation, septic tank pumping, grease trap cleaning
Specialties or Unique Capabilities: Serving both residential and commercial clients
Years in Business: Not specified

LaPierre Septic Service

Contact Phone: (603) 755-2017
Email Address: pierreseptic@msn.com
Website: https://www.lapierre-septic.com/
Physical Address: Farmington, NH 03835
Services Offered: Septic tank pumping, septic system installations, portable toilet rentals, grease pumping, septic inspections, repairs, pump repairs and installations
Specialties or Unique Capabilities: Over 40 years of experience, family-owned and operated, serving Strafford County and surrounding areas
Years in Business: Over 40 years

Bob’s Septic Service

Contact Phone: (603) 642-5326
Email Address: Not provided
Website: https://bobssepticservices.com/
Physical Address: Not provided
Services Offered: Septic system design, septic system installation, septic tank pumping, septic system maintenance
Specialties or Unique Capabilities: Licensed by the State of NH-Dept. of Environmental Services for wastewater removal and transport; serving the NH Seacoast area, Rockingham County, and parts of Strafford County
Years in Business: Not specified

Eastman’s Excavation, Septic & Drain

Contact Phone: (207) 252-5906
Email Address: info@eastmanexcavation.com
Website: https://www.eastmanexcavation.com/
Physical Address: North Berwick, ME
Services Offered: Septic system installation, septic system repair, excavation services, drainage services
Specialties or Unique Capabilities: Serving Southern York County, ME, and Southern Strafford and Rockingham County, NH; expertise in various septic system designs, including advanced systems
Years in Business: Not specified

Bonser & Son Septic and Sewer Systems Repair

Contact Phone: (603) 679-2036; (603) 502-5375 (Cell)
Email Address: bonser@yahoo.com
Website: https://www.bonserandson.com/
Physical Address: 24 Smoke Street, Nottingham, NH
Services Offered: Septic system design, septic system installation, septic system repair, sewer system repair
Specialties or Unique Capabilities: Licensed by the State of New Hampshire for both designing (License #550) and installing septic systems (License #1327); NH Septic Evaluator #131
Years in Business: Not specified

Sullivan County

McKenzie Septic Service

Contact Phone: (603) 542-5085
Email Address: Not provided
Website: Not provided
Physical Address: 231 Winter St, Claremont, NH 03743
Services Offered: Septic tank cleaning for residential and commercial clients
Specialties or Unique Capabilities: Established in 1970, over 50 years of experience
Years in Business: Over 50 years

Fellows Excavating & Septic Pumping

Contact Phone: (603) 863-1290
Email Address: Not provided
Website: Not provided
Physical Address: 624 Lear Hill Road, Newport, NH 03773-7728
Services Offered: Septic tank pumping
Specialties or Unique Capabilities: Serving Newport and surrounding areas since 1972
Years in Business: Over 50 years

Eric Pollari Site Work & Septic Services

Contact Phone: (603) 381-0184
Email Address: epollari6@gmail.com
Website: https://nhsiteandseptic.com/
Physical Address: Newport, NH
Services Offered: Grading and excavation work, installations of septic and infiltration systems, utilities, and bluestone driveways
Specialties or Unique Capabilities: Over 40 years of experience in the construction business, serving Newport/Sunapee area
Years in Business: Over 40 years

Hinds Septic Design Services, LLC

Contact Phone: (603) 387-8275
Email Address: info@hindssepticdesign.com
Website: https://hindssepticdesign.com/
Physical Address: Central New Hampshire
Services Offered: Septic system design for residential and small commercial projects, lakefront site assessments, NHDES Shoreland and Wetland permitting
Specialties or Unique Capabilities: Over 30 years of experience in site development, utilizing robotic total station and CAD software for efficient project execution
Years in Business: Since 2002

Keith R. Fulton Contracting

Contact Phone: (603) 863-1579
Email Address: Not provided
Website: Not provided
Physical Address: Route 10, Lempster, NH 03605
Services Offered: Septic tank contracting
Specialties or Unique Capabilities: Not specified
Years in Business: Not specified

Pine Hill Construction

Contact Phone: (603) 542-4730
Email Address: Not provided
Website: Not provided
Physical Address: 41 Windy Acres Road, Charlestown, NH 03603
Services Offered: Septic tank contracting
Specialties or Unique Capabilities: Not specified
Years in Business: Not specified

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