Septic permit rules and requirements in Vermont
In Vermont, the state issues the septic permit itself. It comes from the Wastewater System and Potable Water Supply Program, Drinking Water and Groundwater Protection Division, Department of Environmental Conservation, Vermont Agency of Natural Resources. The code is Environmental Protection Rules, Chapter 1. Vermont Environmental Protection Rules, Chapter 1, § 1-301 · checked 2026-09-12
Wastewater System and Potable Water Supply Program
Writes the rules
checked 2026-09-23
The state
Issues the permit
checked 2026-09-12
Environmental Protection Rules, Chapter 1
Code section
checked 2026-09-23
Who issues a septic permit in Vermont
The state issues the permit itself, through the Wastewater System and Potable Water Supply Program, Drinking Water and Groundwater Protection Division, Department of Environmental Conservation, Vermont Agency of Natural Resources.
The rule requires a permit from the Secretary. It applies before a person builds, replaces, or connects a wastewater system. A separate section lets a town take over the program instead.
Vermont Environmental Protection Rules, Chapter 1, § 1-301 · checked 2026-09-12
The office publishes its own page on this: Vermont Department of Environmental Conservation — Wastewater System and Potable Water Supply Program.
This is the program's own page on the department's site.
Vermont Department of Environmental Conservation — Wastewater System and Potable Water Supply Program · checked 2026-09-23
Where the rule is written
The rules that govern every septic system in Vermont are Environmental Protection Rules, Chapter 1 — Wastewater System and Potable Water Supply Rules. The state applies them directly.
Subchapter 3 sets the permit rule for a wastewater system. Subchapter 8 sets the design rules these systems must meet.
Vermont Environmental Protection Rules, Chapter 1 · checked 2026-09-23
What state law requires
Does Vermont require a septic permit?
Vermont requires a permit to build, repair, replace or connect a wastewater system.
The rule also covers a water supply. A minor repair needs no permit.
Vermont Environmental Protection Rules, Chapter 1 · checked 2026-09-23
Does Vermont require a percolation test?
Vermont requires a soil evaluation, not a mandatory percolation test, before a permit.
The evaluation uses soil pits to check depth, texture and drainage. A percolation test is optional. It can set a different leachfield size.
Vermont Environmental Protection Rules, Chapter 1 · checked 2026-09-23
The minimum septic tank size Vermont allows.
1,000 gallons.
Applies to a wastewater system with a design flow of 560 gallons a day or less.
A design flow above that limit needs a tank sized at twice the flow. See Table 9-1.
Vermont Environmental Protection Rules, Chapter 1 · checked 2026-09-23
How far the tank must sit from a well in Vermont.
50 feet.
Applies to a wastewater tank, from a well drilled in bedrock or a confined aquifer.
The state sets a bigger, differently shaped zone around the leachfield. A well in loose ground above bedrock needs a wider tank distance too.
Vermont Environmental Protection Rules, Chapter 1 · checked 2026-09-23
How far a system must sit from the property line in Vermont.
25 feet.
Applies to a leachfield's edge, from the property line.
A septic tank may sit closer to the line. See Table 9-5.
Vermont Environmental Protection Rules, Chapter 1 · checked 2026-09-23
Does Vermont require an inspection when a home is sold?
Vermont requires a check before some home sales.
Applies to a home whose water supply uses a surface water source, not a well.
An engineer checks the system and writes a report. The buyer must get a copy before the sale closes.
Vermont Environmental Protection Rules, Chapter 1 · checked 2026-09-23
Must the installer be licensed in Vermont?
The state licenses a system designer. It sets no state rule for an installer.
The board licenses a designer after an exam and a soils course. A licensed engineer may act as a designer instead.
Vermont Environmental Protection Rules, Chapter 1 · checked 2026-09-23
Vermont counties on this site
We have not published a Vermont county page yet. A county earns a page when we hold facts unique to it. Until then this page is the answer for every county in the state.
Telling us your county is how we decide which one to build next.
Sources
State records only. Each figure above has a government source and a checked-on date. County figures live on the county pages.
Verify before you act. Septic rules are set locally and they change. Check anything here with the Wastewater System and Potable Water Supply Program before you spend money on it.