Routine maintenance inspection
The scheduled inspection state rule requires, on a three-year or annual cycle depending on system type. Results are filed with the Health Department.
Pierce County
Septic Inspection in Pierce County, WA
Washington requires on-site sewage systems to be inspected on a schedule, and Pierce County requires an inspection when a property sells. Both are performed by a third party authorized by the local health officer, not by the county and not by the owner.
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Tell us what you need
Your request goes to an on-site sewage professional certified by the Tacoma-Pierce County Health Department and serving Pierce County, not a national lead list.
The request form is not accepting submissions yet. This site is new and the intake line is still being set up. Until it is live, nothing is collected here, because a form that renders but delivers nowhere is worse than no form at all.
Prefer to talk? Call (253) 367-7679.
What it is
Septic Inspection, explained
An inspection is a documented assessment of whether the system is working and whether it meets the standard it was permitted to. The inspector checks the tank interior, the baffles and outlet, the distribution components, and the drainfield for signs of surfacing or backup.
On proprietary and alternative systems the inspection also covers the treatment components, pumps, floats and alarms, which is why those systems carry a heavier obligation than a plain tank and gravity drainfield.
The result is a record. That matters more than homeowners expect, because the filed inspection history is what a buyer, a lender or the Health Department looks at later.
Pierce County specifics
Why this works differently in Pierce County
Pierce County ground varies enough that two neighbouring properties can hold entirely different system types. Outwash on the Graham and Spanaway prairies supports conventional gravity drainfields; dense till around Gig Harbor, University Place and the Bonney Lake plateau often forces a mound, pressure distribution or a proprietary treatment unit.
That distinction sets your inspection frequency. A tank with a gravity drainfield is on a three-year cycle. Everything else is annual. Owners who assume the three-year rule applies to them are often wrong about which system they own.
The Puyallup, Carbon and White river valleys add a second factor: lahar sediment with a shallow water table, where a drainfield can pass inspection in August and surface in January.
Variants
Types and approaches
Property-transfer inspection
The inspection that supports a Report of System Status when a property sells. Tanks are pumped at the time of inspection.
Pre-purchase inspection
Commissioned by a buyer who wants an independent read on a system before committing, separate from whatever the seller produces.
Operation and maintenance inspection
The annual inspection required on proprietary and alternative systems, performed by an operation and maintenance specialist who also services the treatment components.
How it runs
The process, in order
- Records first. The as-built drawing shows where the tank lids and drainfield are, which cuts locating time and the fee attached to it.
- Access and locate. Lids are uncovered. On systems with no as-built this is the slow part, and it can involve probing.
- Tank assessment. Solids and scum levels, tank integrity, inlet and outlet baffles, and any evidence of backflow from the drainfield.
- Component check. Distribution box, pump chamber, floats, alarms and treatment components where the system has them.
- Drainfield evaluation. The absorption area is checked for surfacing, saturation, odour and vegetation patterns that indicate failure.
- Report and filing. Findings are documented and submitted. For a transfer inspection this feeds the Report of System Status application.
What drives the price
Cost expectations
We do not publish a price, because a number quoted without seeing the property is a guess and you would be right to distrust it. What we can tell you is what moves the figure, so you know what a company is looking at when they price the job.
- Whether the tank lids are located and accessible, or have to be found and dug out
- System type, since a proprietary treatment unit takes far longer than a tank and gravity drainfield
- Whether a pump is required at the same visit, which is standard for a transfer inspection
- Travel, which matters at the county edges: Eatonville, Roy, Wilkeson and Carbonado are a long way from the companies clustered nearer Tacoma
- Season, because spring and summer are the busy listing months
A real number comes from a site visit by a certified company. If two quotes differ a lot, the usual reason is one of the items above, and it is fair to ask which.
Where
Available across Pierce County
Common questions
Questions about septic inspection
How often does Washington require a septic inspection?
Under WAC 246-272A-0270, a system with only a sewage tank and a gravity subsurface soil absorption system must be inspected at least once every three years. All other on-site sewage system types must be inspected annually.
Can I inspect my own system?
State rule requires inspection by a third party authorized by the local health officer, except where the local health officer approves owner inspection under conditions it sets. Check with the Tacoma-Pierce County Health Department before assuming owner inspection is available to you.
Does an inspection include pumping?
Not always for a routine inspection, but tanks are pumped at the time of inspection for a Pierce County property-transfer inspection. Ask when you book so the visit is scheduled with the right equipment.
What happens if the inspection finds a problem?
The finding is documented. Repairs to tanks and drainfields are permitted work performed by a certified installer. Finding a problem during a routine inspection is far better than finding it during a sale.
Related
Related services
Request a match
Get matched with a certified Pierce County company
Your request goes to an on-site sewage professional certified by the Tacoma-Pierce County Health Department and serving Pierce County, not a national lead list.
The request form is not accepting submissions yet. This site is new and the intake line is still being set up. Until it is live, nothing is collected here, because a form that renders but delivers nowhere is worse than no form at all.
Prefer to talk? Call (253) 367-7679.