22 verified septic companies across 14 cities in Merrimack County. Compare ratings, services, and request free quotes from local providers.
Merrimack County, New Hampshire is home to a directory of 22 verified septic service companies operating across 14 listed cities and towns. The county spans a mix of urban areas near the state capital of Concord and more rural stretches of central New Hampshire, where public sewer infrastructure is limited and private septic systems are the primary means of wastewater management for a large share of households. The region's glacially deposited soils — ranging from well-drained sandy loam to areas with shallow depth to bedrock — have a direct influence on what types of septic systems are feasible on a given property. Seasonal frost penetration during New Hampshire winters is also a practical factor homeowners and contractors must account for during installation and maintenance. Whether you are in a suburban neighborhood in Bow or on a rural lot in Bradford, this directory is organized to help property owners connect with local septic professionals.
Bow, NH
⭐ 4.9 (630 reviews)
Felix, A Wind River Company, provides septic, grease trap, and drain cleaning services throughout Southeast New Hampshire, including Concord and Bow. The company has 40 years of experience and operates as part of Wind River Environmental's Family of Brands. Their residential services include septic pumping, septic maintenance and repair, septic system installation, septic pump station repair, drain cleaning, and plumbing services. Commercial offerings cover grease trap cleaning and replacement,
Northfield, NH
⭐ 4.8 (3230 reviews)
# Rowell's Services Rowell's Services is a family-owned plumbing, heating, cooling, electrical, and septic service provider based in Northfield, New Hampshire, with over 40 years of industry experience. The company serves residential and commercial properties throughout New Hampshire with a comprehensive range of services including plumbing, drain cleaning, septic system maintenance, HVAC installation and repair, and electrical work. With more than 3,000 five-star customer reviews and a 4.8 Google rating, Rowell's Services maintains a reputation for reliable, on-time service. The company operates multiple teams positioned across the region to ensure fast response times and offers 24/7 availability for emergency situations. As a locally-focused business, Rowell's Services emphasizes personalized customer care and backs all work with written warranties on workmanship. Services include septic system management, trenchless pipe relining for both residential and commercial applications, electrical panel upgrades, and HVAC system installations, making them a full-service solution for property maintenance and repair needs in New Hampshire.
Bow, NH
⭐ 4.8 (202 reviews)
Sewer Surgeons, LLC provides residential and commercial sewer and septic system services in Southern New Hampshire and Northern Massachusetts, operating from Bow, New Hampshire. The family-owned company has over 13 years of experience in the excavation and water/sewer industry. Services include septic system evaluations and installations, septic tank pumping, sewer and drain video inspections, hydro jetting, trenchless pipe lining, drain cleaning and clog removal, and porta potty rentals. The co
Henniker, NH
⭐ 4.0 (76 reviews)
Henniker Septic Service Inc. provides septic services and portable restroom rentals in Henniker, New Hampshire and surrounding areas. The company has been in business since 1985. Their septic services include septic cleaning, pumping, and grease trap maintenance. They offer portable restrooms, toilets, and washing stations for events ranging from small parties to large weddings with hundreds of guests. The company operates with a 24/7 emergency service line and standard business hours from 8:00
Bow, NH
⭐ 3.8 (4 reviews)
Eastern Pipe Service, A Wind River Company, provides trenchless pipelining and sewer repair services throughout New England from their location in Bow, New Hampshire. The company has over 50 years of experience serving residential, commercial, municipal, and industrial clients. Their services include trenchless pipelining, CIPP repair methods, sewer video inspections, manhole rehabilitation, pipeline cleaning, point repair, grease trap services, drain cleaning, lift station services, catch basin
Loudon, NH
⭐ 5.0 (28 reviews)
Best Septic Service provides septic tank pumping and portable toilet services in the greater Concord, New Hampshire area. Based in Loudon at 16 Shaker Brook Park, the company has been serving the local community for over 50 years. Their service area covers central New Hampshire and extends into parts of the Lakes Region for portable toilet delivery. The company operates a fleet of service vehicles and has recently expanded their portable toilet service coverage area. They can be reached at 603.2
Franklin, NH
⭐ 5.0 (13 reviews)
Franklin Septic Services is a highly-rated septic maintenance and repair company serving the Franklin, New Hampshire area. With a perfect 5.0 Google rating based on 13 customer reviews, the company has established a strong reputation for reliable service in the local community. Franklin Septic Services specializes in septic system care, including inspections, pumping, repairs, and maintenance to keep residential and commercial systems functioning properly. The consistently positive feedback from customers reflects their commitment to professional workmanship and dependable service. For septic system needs in the Franklin region, Franklin Septic Services is a trusted local option with demonstrated customer satisfaction.
Hill, NH
⭐ 5.0 (9 reviews)
All Seasons Septic LLC is a septic service provider based in Hill, New Hampshire, dedicated to serving residential and commercial septic system needs. With a perfect 5.0 Google rating across eight customer reviews, the company has established a strong reputation for reliable and professional service. All Seasons Septic LLC specializes in septic system maintenance, inspection, and repair, helping customers keep their systems functioning properly. Their consistent positive feedback reflects a commitment to quality workmanship and customer satisfaction. Whether addressing routine maintenance or urgent system issues, All Seasons Septic LLC brings expertise and dependability to the Hill, New Hampshire area.
Boscawen, NH
⭐ 5.0 (5 reviews)
Hinds Septic Design Services is a septic system design company located in Central New Hampshire, specializing in residential, waterfront, and small commercial sewage disposal systems. Operating since March 2002, the company offers septic system design using CAD software and Robotic Total Station equipment, site assessments, NHDES Shoreland permitting, NHDES Wetlands permitting, and town and city land use planning. They design both conventional and fabric-based septic systems as well as alternati
Bradford, NH
⭐ 5.0 (5 reviews)
Bradford Septic Services is a septic system provider located in Bradford, New Hampshire, dedicated to serving the local community's wastewater management needs. The company has earned a perfect 5.0 Google rating based on five customer reviews, reflecting its commitment to quality service and customer satisfaction. With a strong reputation in the Bradford area, Bradford Septic Services offers expertise in septic system maintenance, repairs, and related services. Their consistent positive feedback demonstrates their reliability and professionalism in the septic service industry. For residents and businesses in Bradford requiring septic solutions, Bradford Septic Services represents a trusted local option with proven customer satisfaction.
New London, NH
⭐ 5.0 (3 reviews)
Clearwater Septic Design, LLC is a septic service provider located in New London, New Hampshire. The company specializes in septic system design and installation services for residential and commercial properties. With a perfect 5.0 Google rating based on customer reviews, Clearwater Septic Design has demonstrated a commitment to quality workmanship and customer satisfaction. Their team brings expertise in planning and executing septic solutions tailored to meet local regulations and site-specific requirements. Serving the New Hampshire region, the company continues to build its reputation as a trusted partner for septic system needs.
Bow, NH
⭐ 5.0 (1 reviews)
Big Bear Excavation is a residential excavation and septic installation company based in Bow, NH 03304. The company provides excavation services including dozer and backhoe work, digging, grading, and sloping. Their service offerings include septic system replacements, retaining walls, and tree removal. Big Bear Excavation emphasizes professional service, fast response times, and high customer satisfaction. They offer free estimates for projects and can be reached at 603-228-9535 or bigbeargriz@
Bradford, NH
⭐ 5.0 (1 reviews)
Hogg Hill Design LLC provides septic system design, permitting, and evaluation services in New Hampshire. The company offers septic design and permitting for new construction, septic system evaluations for existing systems, and failed septic system consulting and permitting. Their services include shoreland protection permitting, shorefront site assessments, replace in kind certification, permit feasibility studies, percolation testing, and house addition permitting. They handle outbuilding cons
Epsom, NH
⭐ 4.9 (56 reviews)
NH Groundscapes, LLC operates as an excavation and site work contractor based in Epsom, New Hampshire, serving all of New Hampshire. The company provides septic system design and installation, residential and commercial excavation, concrete work, snow removal, and firewood sales. Owner Mike leads the company's crew in services that include stump removal, drainage systems, parking lot construction, yard grading and regrading, driveway installation, land clearing, and landscape work. The company h
Canterbury, NH
⭐ 4.9 (46 reviews)
EDR & Family Septic Inspections, LLC provides septic services to homeowners in Canterbury, New Hampshire. The company operates as a licensed septic evaluator, focusing on delivering quality septic inspections while educating clients on proper system maintenance. They work collaboratively with realtors, home inspectors, homeowners, licensed installers, plumbers, and other septic evaluators to ensure their services meet standards for quality, inspection, and compliance with licensing requirements.
Bow, NH
⭐ 4.8 (905 reviews)
Mr. Rooter Plumbing of Greater New Hampshire, located in Bow, New Hampshire, is a trusted plumbing service provider serving the greater New Hampshire region. The company has earned a strong reputation, reflected in its impressive 4.8 Google rating based on 905 customer reviews. With a focus on quality workmanship and customer satisfaction, Mr. Rooter Plumbing delivers professional plumbing solutions to residential and commercial clients throughout the area. Their commitment to reliable service and positive customer experiences has made them a go-to choice for plumbing needs in the Greater New Hampshire community.
Hooksett, NH
⭐ 4.8 (259 reviews)
Kent Septic LLC provides residential and commercial septic services in greater New Hampshire, operating since 1993. The company offers septic inspections for home buyers, explaining system condition and maintenance best practices. Services include septic pumping with bulk discounts for homeowner and condo associations, high-resolution camera inspections for city sewer lines, and jetting service for cleaning lines up to 300 feet in length. They perform pump station installation and replacement fo
Andover, NH
⭐ 4.7 (38 reviews)
Byron's Septic Service, LLC is a septic maintenance and repair company located in Andover, New Hampshire. With a strong Google rating of 4.7 stars based on 38 customer reviews, the company has established itself as a trusted service provider in the region. Byron's Septic Service specializes in septic system care and offers solutions tailored to residential and commercial needs. The consistently positive customer feedback reflects the company's commitment to reliable service and customer satisfaction in the Andover area and surrounding communities.
Concord, NH
⭐ 4.0 (1 reviews)
Agritec Building & Excavating Contractors is a septic service provider based in Concord, New Hampshire. The company offers excavation and building services with experience in septic system work. With a Google rating of 4.0 stars, Agritec has established itself as a service option for customers in the Concord area seeking professional septic and excavation solutions. Whether handling new installations, repairs, or maintenance, the company brings equipment and expertise to residential and commercial projects. Potential customers can learn more about Agritec's services and contact them directly through their listing on SepticTankHub.com.
Epsom, NH
⭐ 3.9 (15 reviews)
Piedmont Excavation and Septic is an established excavation and site development contractor serving central and southern New Hampshire, including the Epsom area. Since 1993, the company has built a reputation for delivering comprehensive earthwork and septic services with over 30 years of industry experience. The company specializes in excavation, site development, and septic system work, completing projects using first-rate excavation practices and industry standards. Piedmont Excavation and Septic prioritizes safety across all operations through proper planning, training, and work site awareness. Projects are managed by experienced foremen who ensure quality execution while maintaining safe construction environments and meeting demanding project schedules. The company is committed to upholding the highest level of quality standards while serving residential and commercial clients throughout New Hampshire.
Concord, NH
⭐ 1.0 (1 reviews)
All-Clear Septic Services is a septic system company serving the Concord, New Hampshire area. The company offers septic maintenance and related services to residential and commercial clients in the region. All-Clear Septic Services appears on SepticTankHub.com's directory to help homeowners and property managers locate local septic professionals. Those interested in learning more about the company's specific services, availability, and service area are encouraged to contact them directly through their business listing.
Concord, NH
Advanced Onsite Solutions provides innovative wastewater solutions for residential and commercial clients in Concord, New Hampshire. The company specializes in developing solutions for handling onsite wastewater systems. Principal Gary Spaulding brings more than 25 years of experience working with consultants, homeowners, designers, and contractors in the wastewater and site planning industries. Advanced Onsite Solutions focuses on representing the best available technology in the field. The com
Much of Merrimack County's housing stock includes older homes built before modern septic codes were standardized, particularly in rural towns where development preceded state-level design requirements. Suburban communities closer to Concord tend to have more recently permitted systems, though even these may be approaching the age at which components require evaluation or replacement. Gravity-fed systems remain common where soils and lot topography allow adequate separation from groundwater, but pump-assisted and pressure-dosed systems are frequently installed on lots with high water tables or limited soil depth. Alternative systems, including mound systems and drip-irrigation designs, are used in areas where conventional options are not viable. New Hampshire's cold winters can stress system components and slow bacterial activity in tanks, making fall pumping a practical consideration for many homeowners in the county.
In New Hampshire, septic system permitting and oversight fall primarily under the authority of the New Hampshire Department of Environmental Services, which administers the state's subsurface systems rules. Local municipalities may also have health officers or planning boards involved in the approval process, particularly for new construction or system replacements. A site-specific soil evaluation and system design prepared by a licensed designer is generally required before a permit is issued. At the point of sale, New Hampshire does not mandate a universal septic inspection by state law, but many purchase agreements and lending institutions require one as a condition of closing, making pre-sale inspections a common practice across Merrimack County. Homeowners can research applicable rules through the New Hampshire Department of Environmental Services or by contacting their town's local health officer for guidance on local requirements. Always verify current requirements with your local health department.
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