At Upfront Septic, we understand the critical role of regular septic inspections in maintaining the health and efficiency of your septic system. Located in the vibrant city of Des Moines, WA, our company has been dedicated to providing top-tier septic services for decades, ensuring the community benefits from our expertise. Our mission is centered on delivering clear communication, prompt service, and building customer trust. With a team of licensed and experienced professionals, we are committed to maintaining the highest standards of workmanship, whether you're dealing with conventional or advanced septic systems. Our extensive septic inspections are designed to identify potential issues early, allowing for timely septic repairs and preventing larger, more costly problems in the future.
Regular septic inspections are a crucial component of effective septic system management. At Upfront Septic, we offer thorough tank inspections that go beyond surface-level evaluations. Our team is equipped to handle a variety of systems, including aerobic, mound, drip, and recirculating systems. By conducting detailed inspections, we ensure that every aspect of your septic system functions optimally. Our services are not just about identifying issues; they are about providing peace of mind to homeowners in Des Moines, WA. With our 24/7 emergency septic response available every day of the year, you can rest assured that our team is always ready to address any urgent needs, minimizing downtime and inconvenience.
Preventive maintenance and smart usage are key to extending the life of your septic system, and Upfront Septic is here to help you achieve that. Our county septic services include not only inspections but also septic pumping, septic repair, and new septic system installations. We pride ourselves on being a reliable septic company that Des Moines residents can count on for all their septic needs. By choosing our extensive septic services, you are investing in the longevity and efficiency of your system. Our commitment to quality and customer satisfaction ensures that every service we provide is tailored to meet your specific needs, helping you avoid costly repairs and maintain a healthy septic system.
Every septic inspection in King County is filed with the health department, so what follows is what inspectors actually recorded in Des Moines rather than a rule of thumb.
| Measure | Figure | What it covers |
|---|---|---|
| Inspections filed in Des Moines, 2015–2025 | 595 | Every inspection is filed with the health department |
| Inspections that found a problem | 36.0% | 12.6 points above the King County average |
| Carried out at the point of sale | 395 | Of which 33.2% found a problem |
| Partial rather than full inspections | 20.2% | Region-wide, partial inspections find a problem more often |
| Past due for an inspection | 48.0% | Of the 404 whose system type is on record |
| Past twice their interval | 23.3% | A subset of the row above |
| Properties on septic in Des Moines | 609 | System type recorded for 404 of them (66%) |
Of the inspections filed in Des Moines over the decade to 2025, 36.0% recorded a deficiency — 12.6 points above the King County average. A deficiency is an inspection filed with a status of Deficient, and the records carry no severity field, so it covers everything from a missing riser lid to a failed drain field. It is not the same thing as a broken system.
Roughly 66% of the inspections here happened because a property was changing hands, and 33.2% of those found something. Washington requires an inspection at sale whatever the system type, so that group is a complete count of a defined event rather than a sample.
How often you are due depends on what kind of system you have, so this can only be measured where the type is on record. In Des Moines that is 404 of the 609 septic properties — 66%. Of those, 48.0% have no inspection filed within their interval and 23.3% are past twice it. The rest cannot be assessed either way, and nothing here should be read as a finding about them.
If you do not know where your own system stands, we can tell you: there is more on what an inspection covers, who is allowed to carry one out and what the records show region-wide on our septic inspections page.
On-site sewage in King County is governed by Board of Health Title 13, adopted in February 2025 and in effect since 1 April 2025. Inspection frequency comes from Table 13.60-1: a gravity system without a pump is monitored every three years; public-domain technology — mounds, intermittent sand filters and pressure distribution — and proprietary treatment units are monitored every year. A newly installed system gets its first inspection six months after occupancy, or 45 days for a proprietary or commercial system.
King County is unusual in who may do the work. On a gravity system without a pump the owner may perform the routine monitoring themselves, as may a licensed maintainer or a licensed OSS pumper. Anything with a pump, and anything in a marine recovery area, requires a licensed maintainer. The report goes to you at the time of the inspection and to the health officer within thirty days.
Solids have their own separate rule: the owner must determine the level of solids and scum at least every three years for a residential system with no garbage grinder, and every year if a garbage grinder is installed.
Selling a home in Des Moines triggers its own inspection. Before title transfers the seller must have a property transfer monitoring and performance inspection carried out by a licensed OSM, unless one was performed in the previous twelve months and the property has not changed hands since. The owner must also give the buyer the maintenance records if they have them.
Sources: King County Board of Health Title 13, Sections 13.60.005, 13.60.020 and 13.60.030, and Table 13.60-1. Revised OSS codes · Records search
An inspection and pump assessment on Anderson Island. The drawdown test came in at about 0.75 inches per minute against roughly 1 expected, and the pump tank showed massive root intrusion. Risers were recommended on all tanks.
A high-level alarm at a Gig Harbor property with the pump tank flooded. We pumped the pump tank and about 1,125 gallons from the septic tank, and the inspection found a pump that would not activate, an unsealed junction box, root intrusion and lid damage.
A camera inspection checked the drain field against the property's as-built drawing, confirming five lateral lines running almost to the fence. We opened the valves for even dispersal, pumped the tank and pump basin, and replaced the tank lids.
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