ATT and sand filter maintenance
If you have an ATT, sand filter or newer pressure distribution system, Deschutes County requires annual service by a certified provider.
Alternative treatment technologies (ATTs), sand filters and pressure distribution systems clean wastewater more thoroughly than a basic gravity system, which is why they're common in Central Oregon. They also have pumps, timers, filters and alarms that need regular attention. Deschutes County's operation and maintenance (O&M) program makes that maintenance a requirement.
What does Deschutes County require?
- The program covers all ATT systems, plus sand filter and pressure distribution systems permitted since early 2014.
- Owners must keep a service contract with a DEQ-certified maintenance provider for the life of the system. The first contract runs at least 2 years.
- The system must be inspected at least once a year, and the provider submits the annual report to the county.
- Providers must respond to service calls within 48 hours.
- When a property sells, the new owner must sign a transfer or a new contract.
- ATT providers must also be certified by the system's manufacturer.
What happens during an annual service?
- Checking pumps, floats, timers and alarms
- Inspecting and cleaning filters
- Checking sludge levels and scheduling pumping when needed
- Inspecting the treatment unit or sand filter media
- Filing the annual report with the county
Why does South County care so much?
Groundwater in the La Pine area sits close to the surface under fast-draining pumice soils, and studies dating back to 1982 found rising nitrate from septic systems. The county now requires nitrogen-reducing systems for new homes and major repairs there, and keeping those systems working helps protect the groundwater many South County homes rely on for drinking water.
What affects the cost of a maintenance contract?
- System type and brand. Different ATTs need different service.
- Number of visits. Some systems need more than one visit a year.
- Repairs and pumping. Usually billed separately.
- County fees. An annual evaluation fee goes with the report.
Prices come from the septic company after they've seen the system. We don't quote prices ourselves, and a phone estimate is only a starting point.
Where we connect you with help
Common questions
Is a maintenance contract required for my sand filter?
If your sand filter or pressure distribution system was permitted in Deschutes County since early 2014, or you have any ATT system, yes. Annual inspection by a DEQ-certified maintenance provider is required.
What happens to my ATT contract when I sell my house?
The new owner must sign a transfer agreement or a new contract with a certified provider.
Related services
More background: Deschutes County septic guide.
Septic backing up or alarm going off?
Call now instead of sending a form. Backups are a same-day problem.