Septic System Services in Lebanon, New Hampshire

Why Trust Our Septic Systems in Lebanon, NH?

Lebanon sits along the Connecticut River in Grafton County, and that proximity shapes what a septic system needs to work here. Soil composition in New Hampshire varies dramatically by region and even by neighborhood, and closer to the river corridor, groundwater tends to sit higher and soil conditions shift more than property owners expect. A design that works two miles up the hill doesn’t automatically work on a lot near the river.

That’s the starting point. What comes after it is where local knowledge matters.

A proper system starts with a real site assessment — soil composition through percolation testing, depth to groundwater and bedrock, topography, and proximity to wells and water bodies. Where groundwater sits too high or bedrock is too shallow for a standard gravity-fed system, a mound system that elevates the drain field above grade is often the right call, not a workaround.

Along the I-89 corridor and throughout Grafton County, we’ve designed and installed systems suited to lots that a generic approach would have gotten wrong.

Murphy & Son Construction Inc. has worked septic installations across the Lebanon area for years. We design for the ground your property actually sits on.

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Client Experiences with Our
Septic Systems Contractors in Lebanon, New Hampshire

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Gordon Troy
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Jon and his team are awesome! Over the years, they have completed a variety of projects for me and my neighbors, including the removal of many dead and dying trees (along with their stumps), the complete renovation of our common road, which was in a state of disrepair due to a lack of proper maintenance, and the repair of my driveway. Most recently, removing a rock wall with many large dead trees embedded in it, and clearing the entire area to create outdoor gardens, and coordinating that effort with adding buried conduit to repair a direct-bury electric connection to the well head, as well as installing conduit for a solar array. Additionally, Jon and his team plow my driveway and the common road shared with my neighbors. They come just often enough to keep us always open, and are very careful not to plow the road so deep as to move the gravel onto the lawn. Always fair pricing, great attention to detail, and an absolute pleasure to work with. Can't recommend enough.
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Dan Hall profile picture
Dan Hall
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Jon Murphy and his company have performed a wide variety of excavation and property improvement projects for us including: equestrian riding arena construction and maintenance, rock retaining walls, property line tree and brush removal, buried propane tank, gravel driveway restoration, footings for new deck, and winter plow services. Jon was excellent to work with. He discussed all aspects of the projects and collaborated with us on our concerns to ensure all issues were addressed. Jon contacted us during projects if any questions arose to ensure satisfactory results. Jon and his team have machines in top operating condition and are they expert equipment operators. Jon’s quoting for work is prompt, and his scheduling is reliable. Murphy & Sons Construction is a quality outfit.
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Paul VanHuis
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Jon did all the site work for our horse farm on a difficult piece of property in Plymouth, Vermont. We were pleased and have had no problems even in the face of the last few years of extreme weather. Jon and his employees are professional and timely. His prices are competitive. He has a large array of equipment to complete the tasks he takes on. Jon is easy to work with and you can trust him.
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Fred Serra
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Jon and his employees are honest, hardworking and dependable. They did an amazing job on our Bible Hill property. I would highly recommend them.

Ready to Start Your Project? Let’s Talk.

Let’s get your project moving. Our skilled team is ready to handle every phase of your site work safely, efficiently, and on schedule. Call today or request a free quote to get started.

Services We Provide

Driveway Grading and Roads

Transform your property access with our expert driveway grading and road building services. We craft durable, well-designed driveways and roads that withstand Vermont’s challenging weather

Bridges

Start your bridge project on solid ground with our specialized bridge construction services. Designed for small, personal-use bridges—whether crossing creeks, ditches, or small valleys—we establish

Demolition

Clear the way for new beginnings with our efficient demolition services. We safely and systematically dismantle structures of all sizes, ensuring proper disposal and recycling

Equestrian Riding Construction

Create the perfect training environment for your horses with our specialized riding ring construction. We combine expert excavation with precise grading to deliver a safe,

Foundation Excavation

Start your construction project on solid ground with our foundation excavation expertise. We prepare your site with precision, ensuring proper depth and leveling for a

Utility Excavation

Trust our precision excavation services for all your utility needs. We expertly handle trenching for water lines, electrical conduits, and other essential utilities. Our team

What Makes Our Septic Systems in Lebanon, NH, Efficient and Reliable?

A septic system that fails within a few years usually wasn’t matched to the site in the first place. We start with assessment, not assumption.

Site evaluation comes first. We assess soil type, percolation rate, groundwater depth, and bedrock proximity specific to your lot, because a property near the Connecticut River corridor can need a different system entirely than one further from the water table.

From there, we work through state design and permitting requirements before installation begins — Grafton County and New Hampshire environmental regulations govern system type, setbacks, and approval, and getting that step right protects the project from delays later.

Installation proceeds to the approved design, whether that’s a conventional gravity-fed system on suitable soil or a mound system where groundwater or bedrock requires it. Tank placement, drain field construction, and backfill are all handled to spec.

We finish with a final inspection to confirm the system passes state requirements and is ready for use, not just installed and left for the inspector to catch problems.

Residential septic trenches
Underground septic system

Case Studies

Residential septic trenches

A homeowner near West Lebanon needed a new septic system on a lot close to the Connecticut River with high groundwater. Percolation testing and site assessment confirmed a conventional system wouldn’t meet separation requirements, so we designed and installed a mound system that met state approval on the first submission and has performed reliably since.

Septic tank placement

A property owner outside Lebanon had an aging system showing signs of drain field failure. We assessed soil and groundwater conditions, confirmed the original system was undersized for the lot’s actual percolation rate, and installed a properly sized replacement system. The new system has run without issues through multiple seasons.

RECENT PROJECTS

Take a look at some of our latest work completed recently. From land clearing and grading to demolition and full site prep we do it all. Scroll through the photos below to see our team in action and the results we deliver.

Murphy & Son Construction Inc

FAQs About Our Septic System Services In Lebanon

Depends on groundwater depth and soil conditions on your specific property. Lots closer to the Connecticut River often have higher groundwater, which can require a mound system. We determine this through site assessment and percolation testing before design.

Depends on system type, site conditions, and whether it’s new installation or replacement. Mound systems typically cost more than conventional systems. We quote after assessing the site.

Both. We manage design, permitting, and installation as one process, so approval and construction stay aligned from the start.

Signs include slow drains, sewage odors, standing water near the drain field, or backups. We can assess an existing system and advise on repair versus replacement.

Yes. We handle residential and light commercial septic system design and installation across Lebanon and Grafton County.