Virginia Septic Regulations Explained (12VAC5-610)

Sourced from 12VAC5-610, 12VAC5-613, 18VAC160-10, and Title 32.1 of the Code of Virginia — last checked August 2026.

The Rules That Apply to You

Statutory authority for the main chapter comes from §§ 32.1-12 and 32.1-164 of the Code of Virginia. 12VAC5-610 is supplemental to the Virginia Sewerage Regulations and addresses sewage not regulated by a VPDES permit.

Two Agencies, Different Jobs

VDH — the Virginia Department of Health — sets the standards. Local health departments issue construction permits and operation permits, and oversee operation and maintenance of alternative systems by ensuring mandatory inspections are conducted and reported.

DPOR — the Department of Professional and Occupational Regulation — licenses the people. Onsite soil evaluators, onsite sewage system operators, and installers all hold DPOR credentials.

The practical implication: when you need something evaluated, designed or operated, the person doing it must hold the right DPOR license. When you need something approved, it goes to the local health department.

Who Is Allowed to Evaluate Your Site

If you find a source citing 12VAC5-615 for who may perform a soil evaluation in Virginia, it has been wrong since January 3, 2020. That chapter, the Authorized Onsite Soil Evaluator Regulations, was repealed outright (Virginia Register Vol. 36, Iss. 7). Licensing moved to the Department of Professional and Occupational Regulation, under 18VAC160 and Title 54.1, Chapter 23.

Why this reaches you: the people you are allowed to hire, and the board you complain to if the work is bad, are not the ones a pre-2020 source will name.

You Need a Permit

The regulation is unambiguous: no person or owner shall cause or allow the construction, expansion or modification of a sewage disposal system without the written construction permit from the commissioner.

The sequence runs site and soil evaluation, construction permit, installation, then operation permit. See our permit process guide.

Certification Letters

Worth knowing if you’re buying land. A certification letter indicates that a site is suitable for an onsite sewage treatment and disposal system. The application process mirrors that for a system application under 12VAC5-610-250, and fees are set under § 32.1-164 C of the Code of Virginia.

It’s a way to establish whether a lot can support a system without going through the full construction permit process.

Grandfathered Lots

Virginia has a provision that can matter a great deal on older parcels.

Any owner of a grandfathered lot may apply for a construction permit. The local health department may perform a site and soil evaluation, and a permit shall be issued for a system which complies to the greatest extent possible with the chapter — provided the site and soil conditions would not preclude the successful operation of the system.

In plain terms: a lot that couldn’t be permitted under today’s standards from scratch may still be buildable if it qualifies as grandfathered. Whether yours does is a question for the local health department.

If You’re Turned Down

Virginia has a formal appeal route that many homeowners never learn about.

The Sewage Handling and Disposal Appeals Review Board is established within the Department of Health under § 32.1-166.1 of the Code of Virginia. It hears appeals of VDH decisions.

Before appealing, it’s usually worth working the local process first — asking exactly why an application failed, and whether an alternative design or a different area of the property changes the answer.

Engineers Can Design Outside the Standard Rules

Since 2008, § 32.1-163.5 of the Code of Virginia has allowed licensed professional engineers to design alternative onsite sewage systems that are not required to comply with the Sewage Handling and Disposal Regulations. Instead, those designs must meet performance requirements established by the board — which is a large part of why 12VAC5-613 exists.

On a difficult site, that route can produce a permittable system where the standard prescriptive rules would not.

A Virginia Septic Inspection Cannot Pass or Fail Your System

This surprises almost every buyer and seller. Under § 59.1-310.9, an authorized septic system inspector “shall not provide pass or fail determinations or graded assessments of functionality” and may not “perform a hydraulic load test to simulate peak daily flows.” They report what they observed. They do not certify the system.

The same section requires a signed written contract before any work starts — one that scopes the job, states the cost, and says plainly that a complete inspection requires pumping the septic tank. The written report is due within 10 business days from the start of the inspection, unless both parties agree otherwise in writing.

Only a licensed operator, installer or onsite soil evaluator may perform the inspection at all, and violating these rules is a Class 3 misdemeanor (§ 59.1-310.10).

What to do with it: if you are handed a report that says “passed,” whoever wrote it either is not licensed to write it or wrote something the law does not permit. Ask for the observations instead — those are what you are entitled to. And if the tank was not pumped, you did not get a complete inspection.