Septic Inspection
Washington requires inspection at least every three years for a tank-and-gravity system and annually for every other type, performed by a maintenance service provider authorized by the local health officer.
Report of System Status
Pierce County Septic Services: records, transfer inspections and permits in Pierce County, WA
Selling a house on a septic system in Pierce County means producing a Report of System Status, and that means hiring a certified company to inspect and pump before the Health Department will issue it. This site explains what the county asks for, where the paperwork lives, and gets you a quote for the inspection and the pump.
Washington adds its own statewide transfer requirement on February 1, 2027, so the paperwork is about to matter for every septic property in the state, not only the ones changing hands in Pierce County.
Free quote
Get a free septic quote in Pierce County
Your request goes straight to an on-site sewage professional certified by the Tacoma-Pierce County Health Department and serving Pierce County, usually within about an hour during the day, not a national lead list.
Prefer to talk? Call (253) 367-7679.
What this site is for
The paperwork is the hard part, so this site starts there
Most septic sites sell you a pumping appointment. In Pierce County the thing that actually stalls a sale is a document: the Report of System Status, the as-built drawing nobody can find, the record of the last inspection. Those are county records with county rules, and they are the part homeowners get stuck on. Everything below is organized around that.
You are selling a Pierce County home on septic
You need a Report of System Status. The inspection and the pump are done by a certified company that you hire, and the Health Department reviews the submitted application and issues the report. Start it before you list, not after you have an offer.
You cannot find your septic paperwork
As-built drawings, permits and past inspection reports for Pierce County systems are held by the Health Department. The as-built is the one worth chasing first: it shows where the tank and drainfield are, which is what an inspector otherwise has to spend time locating.
You do not know when yours is due
It depends on what you own. A plain sewage tank with a gravity drainfield is on a three-year cycle. Anything else, including pressure distribution, sand filters and proprietary treatment units, is annual.
You heard a new state rule is coming
It is real and it is dated. From February 1, 2027, sellers statewide must obtain a transfer inspection from a third-party inspector, submitted on forms the local health officer approves. Handing the buyer the maintenance and repair records is not new: that one applies at any sale today.
Verified requirement
What Washington actually requires of a septic owner
These are the owner obligations in WAC 246-272A-0270, the state rule that governs on-site sewage systems. We quote the rule rather than paraphrasing it, because this is the part homeowners get contradictory answers about.
- Owners must operate, monitor and maintain an on-site sewage system to minimize the risk of failure.
- A system consisting solely of a sewage tank and a gravity subsurface soil absorption system must be inspected at least once every three years, unless the local health officer specifies more often.
- All other on-site sewage system types must be inspected annually, unless the local health officer specifies more often.
- Those inspections must be obtained from a maintenance service provider authorized by the local health officer, and the results submitted to the local health jurisdiction on a form the local health officer approves.
- At the time of property transfer, and this part applies now, the owner must give the buyer all available maintenance and repair records, in addition to the seller disclosure statement required by chapter 64.06 RCW for residential real property.
- Beginning February 1, 2027, the owner must also obtain a property-transfer inspection from a third-party inspector authorized by the local health officer, plus an inspection of any proprietary treatment products per the manufacturer recommendations, and submit the results on an inspection report form the local health officer approves.
- The local health officer may remove the transfer-inspection requirement where the local health jurisdiction has evidence that the system complies with the routine inspection duty and was inspected by an authorized third-party inspector.
Source: WAC 246-272A-0270, read 2026-09-18. Pierce County's own transfer process is administered by the Tacoma-Pierce County Health Department; confirm the current local requirement with them before you rely on it.
The work
Septic work in Pierce County
Every job below is performed by an independent company certified by the Health Department, not by us.
Septic Tank Pumping
Pumping removes accumulated solids before they reach the drainfield. It is also done at the time of a property-transfer inspection in Pierce County.
Drainfield Repair and Replacement
A drainfield that surfaces effluent or backs up has stopped absorbing. Replacement is the largest expense a septic property faces and it is permitted work.
Septic System Installation
A new or replacement system needs a site evaluation, a design, and a permit before installation begins. Pierce County soils vary enough that the design drives the cost.
Septic Design and Site Evaluation
A designer evaluates soil and site conditions, then produces the drawing the Health Department reviews. Glacial outwash and till behave very differently in Pierce County.
Operation and Maintenance Service
Proprietary and alternative systems carry an annual inspection obligation. An operation and maintenance specialist performs the inspection and files the report.
Why Pierce County is its own problem
Glacial soil, lahar plain, and a county that keeps its own records
Pierce County sits on the deposits Mount Rainier and the Puget lobe left behind. The Puyallup and Carbon river valleys are lahar plain, the uplands around Graham, Spanaway and Frederickson are glacial outwash that drains fast, and much of the area between them is dense glacial till that barely drains at all. Two properties a mile apart can need completely different systems, which is why the design step drives the cost of a replacement more than the excavation does.
That variation is also why the as-built matters so much here. On outwash a drainfield can be compact and conventional; on till it may be a mound, a pressure system or a proprietary treatment unit, and those carry the annual inspection obligation rather than the three-year one.
The other Pierce County specific is administrative. The Tacoma-Pierce County Health Department holds the permit and as-built records, publishes the list of certified on-site sewage companies, and reviews the Report of System Status before issuing it. That is unusual in a helpful way: the county regulates and records, and the paid work is done by private certified companies you choose from the county's own list.
It also means the answer to most Pierce County septic questions is a county record, not an opinion. Where a page here states a requirement, it names the rule or the office it came from.
Areas served
Across Pierce County
Septic density is highest outside the sewered cores, in Graham, Spanaway, Eatonville, Orting, Buckley, Roy and the unincorporated areas between them, but every city below has septic properties inside or adjacent to it.
Common questions
Pierce County septic questions
Does Pierce County require a septic inspection when I sell my house?
Pierce County asks for a Report of System Status when a property served by an on-site sewage system is sold. The owner arranges the inspection with a certified company, tanks are pumped at the time of inspection, and the Health Department reviews the application and issues the report. Confirm the current requirement and timing with the Tacoma-Pierce County Health Department before you list, because the review adds time to a closing.
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. Every other on-site sewage system type must be inspected annually. Inspections are performed by a maintenance service provider authorized by the local health officer.
What changes on February 1, 2027?
From that date, WAC 246-272A-0270 requires sellers statewide to obtain a transfer inspection from a third-party inspector authorized by the local health officer, and an inspection of any proprietary treatment products per the manufacturer recommendations, submitted on forms the local health officer approves. Giving the buyer all available maintenance and repair records is already required at any transfer. The local health officer may remove the inspection requirement where the health jurisdiction has evidence the system is in compliance and was inspected by an authorized third-party inspector.
Where do I find the as-built drawing for my septic system?
As-built records for Pierce County systems are held by the Tacoma-Pierce County Health Department. The drawing shows where the tank and drainfield sit, which saves an inspector locating time and saves you the fee that goes with it.
Do you perform the septic work yourselves?
No. Pierce County Septic Services is a referral service. We connect homeowners with independent on-site sewage professionals certified by the Tacoma-Pierce County Health Department, and those independent companies perform all the work.
What it costs, and what happens after you send it
What does septic work cost in Pierce County?
No price is published on this site, and that is the same discipline every other claim here follows. Every regulatory statement on these pages traces to a cited rule with the date it was read. A cost range has no equivalent source, so rather than assert one, this site describes what actually drives the number.
For an inspection or a pump-out: whether the tank lids are already exposed or have to be located and dug out, the system type, since a proprietary treatment unit takes far longer than a tank and gravity drainfield, whether a pump is needed at the same visit, and travel, which matters at the county edges because Eatonville, Roy, Wilkeson and Carbonado are a long way from the companies clustered nearer Tacoma. For a repair or a replacement: whether the ground supports a conventional drainfield or forces a mound, pressure or treatment system, which is the difference between two very different projects.
The company that comes out prices it after seeing the system, and season matters too, since spring and summer are the busy listing months here. Booking outside the spring and summer listing rush, and having the lids located before the visit, are the two things within your control that move a quote.
How fast will someone get back to me?
Your request goes to an independent local septic company certified by the Tacoma-Pierce County Health Department, usually within about an hour during the day. That company then contacts you to look at the system and price the work on their own schedule.
What work is covered?
Septic inspection, tank pumping, operation and maintenance, drainfield repair and replacement, system installation, design and site evaluation, and records lookup. See every service.
Only the certified company standing on your property can price your actual system.
Free quote
Get a free quote for your Report of System Status
Your request goes straight to an on-site sewage professional certified by the Tacoma-Pierce County Health Department and serving Pierce County, usually within about an hour during the day, not a national lead list.
Prefer to talk? Call (253) 367-7679.