How long does a septic inspection take?

Most take one to three hours. Time depends on how easy the system is to find, whether the tank is pumped during the visit and how much testing is done on the drain field.

Should the tank be pumped before an inspection?

Many inspectors prefer to see the tank before and during pumping so they can judge how the system has been working. Ask the inspector what they want rather than pumping on your own beforehand.

Who pays for a septic inspection during a sale?

It depends on your contract and local practice. Buyers often pay for their own inspection, while some sellers order one before listing. Your real estate agent can tell you what is typical in Chehalis.

How often should I inspect my septic system?

A professional inspection every few years is a good habit, often at the same time as pumping. Systems with pumps, aerobic units or known problems may need more frequent checks.

Septic System Inspections for Chehalis Homes

If a home in Chehalis uses a septic system, the condition of that system can change what the house is worth. An inspection looks at the tank, the pipes and the drain field so there are no surprises after closing.

Local septic companies that serve Chehalis can inspect for a sale, a refinance or simply because you want to know how your system is holding up.

The checklist an inspector works through

Expect the inspector to locate every component, measure how full the tank is, check inlet and outlet baffles for damage, and watch whether water flows the right way. Many also run water through the house to see how the system responds and walk the drain field for wet spots or odors.

Choosing the right kind of inspection

A walk-through inspection is fine as a routine check on a system you know well. For a home sale, a refinance or a system you know nothing about, choose a full inspection that opens the tank and looks at the drain field. Some lenders and counties specify which type they will accept.

When to get a septic inspection

Get an inspection before buying a home with a septic system, before listing your own, and when you refinance if the lender asks for one. It also makes sense every few years as part of routine care. Other good times are after a major backup, before adding a bedroom or bathroom, or when the home has been empty a long time. Many owners schedule an inspection at the same time as pumping to save a trip.

Reading your inspection report

Look for three things: what was inspected, what was found, and what is recommended. Pay attention to notes about parts of the system that could not be reached, since those are unknowns. Ask the inspector to explain any term you do not understand and to rank repairs by urgency. If you are buying, share the report with your agent so it can be part of the negotiation.

Getting the property ready

Clear access to the tank lid and drain field, unlock gates and keep pets inside. Let the inspector know about any past backups, alarms or repairs. If the home is vacant, ask whether water should be run ahead of time. the Lewis County health department may have records for the system that the inspector can use, so it helps to request them early.

Choosing a septic inspector

Look for an inspector who explains the process clearly, provides a detailed written report and is not rushing to sell you repairs. It is reasonable to ask whether the same company performs repairs and how they handle that. Experience with the types of systems common around Chehalis and Centralia, Napavine, Winlock is a plus.

What a Chehalis septic inspection covers

A full inspection near Chehalis usually includes locating and opening the tank, measuring sludge and scum, checking the baffles and filter, and walking the drain field. Some inspectors run water through the house to watch how the system handles it. Ask whether pumping is included, since it lets them see the whole tank.

What inspectors look at closely around Chehalis

Because most mapped soils near Chehalis are rated very limited for septic absorption, inspectors pay special attention to how the drain field is handling water. With about 64 inches of precipitation a year, an inspection after a dry spell can look better than the system really is. Ask how recent rain affects the results.

Local conditions in Chehalis that affect septic inspection

Among the mapped soils within about two miles of central Chehalis, the USDA soil survey rates 97% as very limited for septic absorption fields, 3% as somewhat limited and 0% as not limited. The most common drainage class is well drained. Soils like these often call for careful system design, such as a larger drain field, a mound or another engineered system, and a site evaluation before any new installation or replacement.

Chehalis averages about 64 inches of precipitation a year, and November is usually the wettest month. December is the coldest month at about 38°F on average, so freezing is rarely the main concern here. Heavy rain and saturated ground are the bigger factors for drain fields.

Sources: USDA NRCS Soil Survey (SSURGO), Soil Data Access; NASA POWER long-term climatology. Soil ratings describe mapped soil types near the city center and do not replace a site evaluation of your property.

What the soil around Chehalis means for septic inspection

By drainage class, the USDA soil survey maps the land around Chehalis as 39% well drained, 22% somewhat poorly drained, 22% poorly drained, 10% moderately well drained, 4% somewhat excessively drained, 3% very poorly drained. A good inspection here checks the drain field as well as the tank, since 47% of the soil drains poorly and that is where fields tend to show trouble first.

Source: USDA NRCS Soil Survey (SSURGO), Soil Data Access

Septic companies near Chehalis

These are the septic companies in our directory closest to Chehalis, with straight-line distance. Call any of them directly, or send one request and we will pass it to the best match.

Envirotech Septic Solutions, Rochester, WA, 13.9 mi
Hydro-Physics, Olympia, WA, 14.7 mi
Lang Trucking & Excavation Rod, Onalaska, WA, 16.3 mi
Bolan Septic Service, Olympia, WA, 19.3 mi
Howdys Doody Service Inc, Olympia, WA, 20.2 mi
Sound Septic Inc, Olympia, WA, 21.1 mi

Septic Inspection in nearby towns

We also cover septic inspection in these towns near Chehalis:

Centralia, 4 mi
Napavine, 6.1 mi
Winlock, 12.1 mi
Tenino, 14 mi

About Chehalis, WA

Chehalis is in Lewis County, Washington. About 7,571 people live there, across 5.8 square miles of land (about 1,304 per square mile).

Septic Inspection questions in Chehalis

How long does a septic inspection take?: Most take one to three hours. Time depends on how easy the system is to find, whether the tank is pumped during the visit and how much testing is done on the drain field.
Should the tank be pumped before an inspection?: Many inspectors prefer to see the tank before and during pumping so they can judge how the system has been working. Ask the inspector what they want rather than pumping on your own beforehand.
Who pays for a septic inspection during a sale?: It depends on your contract and local practice. Buyers often pay for their own inspection, while some sellers order one before listing. Your real estate agent can tell you what is typical in Chehalis.
How often should I inspect my septic system?: A professional inspection every few years is a good habit, often at the same time as pumping. Systems with pumps, aerobic units or known problems may need more frequent checks.