Washington requires an inspection when a property on septic changes hands. In Spanaway that means a Report of System Status, usually shortened to RSS, issued by the Tacoma-Pierce County Health Department. It is an inspection with all tanks pumped, followed by the department's sign-off. An RSS is valid for one year and cannot be renewed, so it is worth booking against your actual closing date rather than doing it well in advance.
We are a certified operation-and-maintenance firm in both King and Pierce County, so an inspection we carry out in Spanaway is one that can be filed. If it finds a problem, the technician who found it will set out your options and what each one costs before you decide anything, which is the part that matters when there is a closing date attached.
Sale inspections are filed with the county health department, so the record for Spanaway is close to a complete count rather than a sample. Between 2015 and 2025, 4,581 sale inspections were filed here and 17.3% of them found a problem. Across Pierce County, 15.0% of sale inspections filed between 2015 and 2025 found a problem. That puts Spanaway higher than the county as a whole.
| Sale inspections in Spanaway, 2015 to 2025 | Figure |
|---|---|
| Sale inspections filed | 4,581 |
| Found a problem | 17.3% |
| Could not be completed | 6.5% |
The second figure is about access rather than condition. 6.5% of sale inspections in Spanaway could not be completed, because a lid, a tank or part of the drainfield could not be reached and had to be recorded as not evaluated. That is low by regional standards, but it is still worth avoiding: across both counties, inspections that cannot see everything fail more than twice as often as ones that can.
Having the lids located and exposed before the inspector arrives is the simplest way to make sure the report reflects your whole system.
The single most useful thing a seller can do is book early. Of sale inspections that failed across the two counties, about a third were resolved within 30 days and the median took around eight weeks, which is longer than most closing windows. A problem found before you list is a repair. The same problem found once you are under contract is a negotiation, and sometimes a collapsed sale.
Call (253) 364-7416 to book a sale inspection in Spanaway, or to ask which report your address needs.
The full regional picture, including how long a failed inspection holds up a sale and which towns fare worst, is on our property sale inspections and RSS filings page. For everything else we do in Spanaway, see our Spanaway page.
One 12-inch and two 24-inch risers fitted to give proper access to the tank. The old concrete around the pump tank riser was cut out, the area cleaned and resealed, and every inside rim sealed with hydraulic cement to keep groundwater and roots out.
A Spanaway inspection that turned up gaps where the risers meet the tank, at the inlet connection and around the others, with root intrusion at both compartments. The tank did not need pumping, and a toilet flushed before we left came through strongly. Resealing all the risers is the recommendation.
A Spanaway homeowner called us out on an emergency: the lid site had flooded and sewage was seeping up into her deck. We came out and pumped it out.
Most residential septic pumping appointments take roughly 30 minutes to two hours, but the actual time depends on the tank size, how easy the tank is to reach, its condition, and how much has built up inside it.
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