Septic Installation
Septic excavation and installation for residential and commercial properties throughout Vermont and New Hampshire.
Request a Quote →Septic Services in the Upper Valley
Thompson Site Services provides septic excavation and installation for residential, commercial and public projects throughout Vermont and New Hampshire.
Fully Licensed
Presby Certified
Residential
Septic excavation and installation for new homes, replacements and residential property improvements.
Commercial
Septic system excavation and installation for businesses and commercial properties.
State & Municipal
Septic and site work support for qualifying municipal and state projects.
Federal Projects
Septic excavation capabilities for qualifying federal contractors and government projects.
Septic excavation and installation for residential, commercial and public projects throughout Hartland, Sharon, South Royalton, Thetford and the surrounding Upper Valley. Our crews handle new system installations, replacement systems and the site restoration work needed once installation is complete.
Understanding Septic Installation
A lot of the Upper Valley relies on private septic systems rather than municipal sewer, especially outside the village centers. Installing or replacing a system starts with a site and soil evaluation, and most systems need a Wastewater System and Potable Water Supply Permit from the State of Vermont before any excavation begins, which typically involves a site evaluation and an approved design.
Getting the design and installation right matters, since a failing system usually shows up as slow drains, odors, or soggy patches over the leach field long before it becomes an emergency, and fixing it properly the first time is almost always less disruptive than a repeat repair.
How We Get It Done
Site & Soil Evaluation
We assess the property, soil conditions and any required permits before designing the system layout.
Permitting
Most septic systems in Vermont require a Wastewater System and Potable Water Supply Permit, and we help navigate that process.
Excavation & Installation
We excavate and install the septic tank, leach field and associated components per the approved design.
Inspection
The system is inspected as required before backfilling to confirm it meets code.
Backfill & Restoration
The site is backfilled, graded and restored once the system passes inspection.
When to Call Us
- Building a new home or addition on a property without municipal sewer
- An existing septic system is failing, backing up or reaching the end of its lifespan
- You're subdividing land and need a new system designed and installed
- Slow drains or sewage odors point to a system that isn't working properly
- Wet, soggy patches over your leach field even in dry weather
Frequently Asked Questions
Do I need a permit for a new septic system in Vermont?
Yes. Most soil-based septic systems in Vermont need a Wastewater System and Potable Water Supply Permit from the state, which typically requires a site evaluation and system design.
How do I know if my septic system is failing?
Common signs include slow drains, sewage odors, unusually wet or soggy areas over the leach field, and sewage backing up into the house. Any of these warrant an inspection.
How long does septic installation take?
A straightforward residential system can often be excavated and installed in a few days once permits are in hand, though weather and site conditions can affect the timeline.
Can you help if my septic system already failed?
Yes. We handle both new installations and replacement systems for properties with a failing or outdated septic system.
Septic Work Done Right.
Site Preparation
Proper excavation and site preparation to get the property ready for septic system installation.
System Installation
Installation of septic tanks, system components and associated excavation for new and replacement systems.
Experienced Excavation
Experienced operators and the equipment needed to handle septic excavation efficiently and carefully.
Site Restoration
Final grading and site restoration to leave the property ready for the next phase once installation is complete.
Our Team on the Job
Ready to Start Your Project?
Please complete the form below with as much detail as possible. A member of our team will contact you once we have a chance to review your project. The more details, the more accurate the information we can provide will be. Thank you for your interest in working together and we look forward to working together soon! -The TSS Team