Septic System Inspections for Washington Homes
Most septic problems are cheaper to fix when they are found early. A professional inspection in Washington checks how the system is built, how it is performing and whether anything is close to failing.
You might be under contract on a house or have owned your home for years. Either way, a local company that works across Knox County can give you a clear written picture of your system.
What a septic inspection covers
A full inspection usually starts with locating the tank and drain field and reviewing any records on file. The inspector opens the tank, checks the liquid level and sludge depth, and looks at the inlet and outlet baffles, the tank walls and the lid. Water may be run through the house to watch how the system handles flow. The drain field is checked for wet spots, odors and signs of surfacing water. Pump chambers, alarms and filters are tested if the system has them.
Visual inspections and full inspections
A visual inspection is a quick check of how the system seems to be working, often by running water and looking for problems. A full inspection goes further: the tank is opened, levels are measured and the drain field is evaluated. For a home purchase in Washington, a full inspection is usually the better choice because it finds problems a quick look can miss. Ask the company which type they are quoting before you book.
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 Knox County health department may have records for the system that the inspector can use, so it helps to request them early.
Questions to ask a septic inspector
Ask what their inspection includes, whether the tank will be opened, and whether pumping is part of it. Ask if they probe or test the drain field, how long the inspection takes and when you will get the report. Confirm licensing or certification required where you live and ask for a sample report so you know what to expect.
Septic inspections in Knox County
Inspection requirements differ across Knox County and neighboring areas, and some local health departments keep records of past permits and inspections. Ask the Knox County health department whether there is a file for the property. An inspector who knows local rules can tell you what a buyer or lender will expect.
What inspectors look at closely around Washington
Because most mapped soils near Washington are rated very limited for septic absorption, inspectors pay special attention to how the drain field is handling water. With about 48 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. Frozen ground in the colder months can limit what an inspector can see, so plan inspections for a home sale early when you can.
Local conditions in Washington that affect septic inspection
Among the mapped soils within about two miles of central Washington, the USDA soil survey rates 83% as very limited for septic absorption fields, 17% 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.
Washington averages about 48 inches of precipitation a year, and October is usually the wettest month. Average temperatures stay below freezing for about 4 months a year, with January averaging 17°F, so tank lids and shallow lines benefit from a layer of snow or mulch rather than being cleared bare.
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 Washington means for septic inspection
By drainage class, the USDA soil survey maps the land around Washington as 31% well drained, 27% somewhat excessively drained, 17% moderately well drained, 11% poorly drained, 8% very poorly drained, 4% somewhat poorly drained, 3% excessively drained. A good inspection here checks the drain field as well as the tank, since 23% 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 Washington
These are the septic companies in our directory closest to Washington, with straight-line distance. Call any of them directly, or send one request and we will pass it to the best match.
- B & B Septic Tank Service, Palermo, ME, 8.3 mi
- Crockett's Septic, Nobleboro, ME, 14.2 mi
- Maine Septic Solution, Damariscotta, ME, 15.7 mi
- Smith's Septic Tank Service, Owls Head, ME, 19.3 mi
- Augusta Septic Revitalization, Sidney, ME, 19.8 mi
- Pat Jackson Inc, Augusta, ME, 21.4 mi
Septic Inspection in nearby towns
We also cover septic inspection in these towns near Washington:
About Washington, ME
Washington is in Knox County, Maine. About 1,586 people live there, across 38.0 square miles of land (about 42 per square mile).
Septic Inspection questions in Washington
- 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.
- Does Washington require a septic inspection when a home is sold?
- Rules differ by county and state. Some areas require an inspection or certification when a home changes hands and others do not. Check with the Knox County health department to confirm what applies.
- 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.