If your property in Great Falls, McLean, or anywhere else in Northern Virginia uses an alternative onsite sewage system, your maintenance requirements are different from those of a conventional septic system. Because these systems depend on electrical components, alarms, pumps, filters, and specialized treatment media, they require regular service to keep working properly. Virginia’s AOSS regulations require owners to have the system operated and maintained by a licensed operator, which generally involves a service contract and at least annual visits.
At Great Falls Septic Service, we help homeowners understand what that means in practical terms so they can stay compliant and avoid surprises later. The goal is not just to meet a rule on paper, but to keep the system functioning as designed and protect the property and groundwater around it.
Is a Service Contract Required?
Yes. Virginia’s AOSS rules require the owner to have the system operated and maintained by a licensed operator, and the system must be visited at the frequency set by the operating permit, which is at least annually. The state also provides for operation and maintenance reports that must be submitted by licensed providers through the VDH system.
In practical terms, that usually means a homeowner needs an active service relationship in place. If the system is not maintained properly, the owner may face compliance issues, and the system may not perform as intended.
What an AOSS Inspection Covers
A certified annual visit is more than a quick look at the tank. Virginia’s maintenance requirements call for inspection, field measurements, sampling when required, routine maintenance, and any needed adjustments or in-kind replacement of normal wear items.
A typical inspection may include:
- Electrical control panel checks.
- Alarm testing.
- Pump and float inspection.
- Blower and aeration system checks.
- Filter cleaning or replacement.
- Drip field or dispersal zone checks.
- Sampling and reporting when required by the permit.
These visits help catch small issues before they turn into system failures. They also create the documentation needed to show the system is being maintained correctly.
Why the Paper Trail Matters
Owners are responsible for keeping the operation and maintenance information connected to the system. VDH guidance says owners should keep a copy of the service log and make it available if requested, and they should make a reasonable effort to transfer that record when the property changes hands.
That record matters when you sell the home, too. A clear maintenance history can help show the system has been cared for properly and can reduce confusion for the next owner.
Keep Your Alternative System Fully Compliant
Alternative septic systems are built to do more than conventional systems, but they also demand more care. A missed service visit or ignored alarm can lead to a larger problem faster than many homeowners expect. Regular maintenance helps protect the system and the property.
If you recently bought a home with an AOSS, or if you need to get back on track with compliance, Great Falls Septic Service can help. We handle the maintenance side so you can stay current and keep your system operating as intended. Contact our team to schedule your septic maintenance.

