Septic Tank Risers for Olympia Homes
If your septic company has to dig up the lid every time they visit, a riser can pay for itself. Risers extend the tank openings to the surface and are capped with lids that lock.
Request a call and a company working in Olympia will explain the options and install risers on your tank.
What risers do for a septic tank
Risers extend the tank openings to ground level. Instead of searching for and digging up buried lids at every service visit, the crew simply unscrews a lid at the surface. Most risers are plastic, though concrete versions are also used, and each opening on the tank can have its own riser.
Why homeowners install risers
Easier access encourages regular maintenance, which is the best protection for a septic system. Risers also mark the tank location clearly, so it is not lost or damaged during future projects on your Olympia property.
Installing risers step by step
The crew finds the tank and uncovers each opening, cleans the top of the tank, then attaches the riser with sealant or fasteners so groundwater cannot leak in. The riser is cut to the right height, a lid is screwed on and the soil is backfilled. It is often done during a pumping visit.
Riser safety
Septic tanks contain gases and deep liquid, so lids must stay secured. Use lids with screws or locks, replace cracked lids promptly and never leave an opening uncovered. Keep vehicles off riser lids unless they are rated for traffic.
What a riser job costs depends on
The price depends on how many openings get risers, how deep the tank is buried, whether plastic or concrete is used, and whether the job is done during a pumping visit. Deeper tanks need taller risers and more digging, which adds labor time.
What to ask about riser installation
Ask how many openings your tank has and which ones should get risers, what material they install, how the risers are sealed to the tank, and how the lids are secured. Ask whether combining the job with pumping lowers the total cost.
Picking lids for Olympia risers
Lids should be secured with screws or a lock and strong enough to walk on. Green lids blend into a lawn, while lids that sit slightly above grade are easier to find and keep surface water out. Ask your installer what works best for your yard.
After the risers go in
Make a note of where the lids are for future owners and service crews. Mowing around them is easy if they sit flush, and they make it simple to check the effluent filter or water level. Report any loose or damaged lid to your septic company.
Good times to add risers
The best time to add risers is during a scheduled pumping, when the lids are already dug up. They are also worth adding after buying a home if no one knows where the lids are, or if your service company charges extra to dig.
Risers and routine service in Olympia
Once risers are in, a Olympia septic company can open the tank in minutes. That makes it easier to keep a regular pumping schedule and to check the baffles and filter each time. Some homeowners add a riser over the outlet filter too, so it can be cleaned between pumpings.
Risers and lids for Olympia weather
Where soils are rated very limited, as most mapped soils near Olympia are, frequent checks of the tank and filter help protect the drain field. Risers make those checks quick. With about 66 inches of precipitation a year, a well-sealed riser matters. Poorly sealed joints can let groundwater into the tank.
Local conditions in Olympia that affect septic riser and lid installation
Among the mapped soils within about two miles of central Olympia, the USDA soil survey rates 94% as very limited for septic absorption fields, 6% as somewhat limited and 0% as not limited. The most common drainage class is moderately 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.
Olympia averages about 66 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 Olympia means for septic riser and lid installation
By drainage class, the USDA soil survey maps the land around Olympia as 33% moderately well drained, 25% somewhat excessively drained, 21% well drained, 9% very poorly drained, 6% poorly drained, 6% somewhat poorly drained. Risers bring the tank lids to the surface, which makes regular pumping and inspection quicker and cleaner.
Source: USDA NRCS Soil Survey (SSURGO), Soil Data Access
Septic companies near Olympia
These are the septic companies in our directory closest to Olympia, with straight-line distance. Call any of them directly, or send one request and we will pass it to the best match.
- Pipe Experts, Tumwater, WA, 3.2 mi
- Rocklan Septic Service, Lacey, WA, 3.4 mi
- Gunstone Septic Cleaning, Olympia, WA, 3.5 mi
- Gunstone Septic, Olympia, WA, 3.5 mi
- Baker Underground & Construction LLC, Lacey, WA, 4.8 mi
- Petunia Septic Service, Olympia, WA, 5.0 mi
Septic Riser and Lid Installation in nearby towns
We also cover septic riser and lid installation in these towns near Olympia:
About Olympia, WA
Olympia is in Thurston County, Washington. About 55,733 people live there, across 18.2 square miles of land (about 3,059 per square mile).
Septic Riser and Lid Installation questions in Olympia
- How long does riser installation take?
- Usually a few hours, often done during a pumping visit.
- Can risers be installed on any tank?
- Most concrete and plastic tanks can accept risers. Your septic company will check the openings and choose matching parts.
- Can I mow over a septic riser?
- Most lids sit at grade so you can mow around them easily. Avoid driving heavy equipment over them unless they are traffic rated.
- Do I need a permit to add risers?
- Usually not, but some areas have rules. Check with the Thurston County health department or ask your septic company.