Key Takeaways
- A septic riser is a pipe that extends your tank’s access port up to ground level, so it’s no longer buried under soil or lawn.
- Risers eliminate the need to dig up your yard for every pump-out, inspection, or repair.
- Buried, deteriorating lids can be a serious and hidden safety hazard.
- Local health department guidance recommends keeping tank covers accessible for inspections and pumping, which is exactly what a riser does.
- Easy access makes it more likely you’ll actually stick to a regular inspection/pumping schedule instead of putting it off.
- Proper installation (correct height, sealing, and lid) matters — a poorly sealed riser can let water into the tank and cause bigger problems.
- Markos and Sons Sanitation can install a riser as part of a routine service call or as a standalone upgrade.
If a technician has ever had to dig up your yard just to pump your tank, you’ve already met the problem a septic riser solves. But what is a riser?
Here’s what a riser is, why so many septic systems don’t have one, and how to know if installing one is worth it for your property.
What Is a Septic Riser?
A septic riser is a large rigid, watertight pipe — usually heavy-duty plastic these days, though older installs sometimes used concrete — that extends from the access port on top of your septic tank up to ground level. It sits over the existing lid opening and is topped with a locking cover, so instead of a buried concrete lid sitting a foot or two underground, you have a visible, secured access point sitting flush or somewhat above your lawn.
Many older septic systems were installed with the tank lid buried anywhere from several inches to feet below grade. It was a standard practice at the time due to health department regulations, but these changed in 2018. It is now required that any new septic installation or replacement system have a riser installed with it. A septic riser is also a good selling point for homeowners looking to sell their home.
For those who do wish to install risers, the University of Minnesota Extension’s septic care guide notes that riser elevation needs to be set carefully so it keeps water from intruding into the tank while still staying accessible for service. You can see why a proper installation matters more than it might seem; rainwater running into your tank will do your septic system no favors.
Why Homeowners Install Risers
Faster, cheaper service calls
This is the big one. Once a riser is in place, a technician pops the lid and gets straight to work — no digging, no guessing where the tank is buried, no lasting scar to your landscaping you will wince at for weeks afterwards. Local health departments specifically advise keeping your septic tank cover accessible for inspections and pumping, which means installing risers if the lid is buried.
Savings accumulate with each service visit
Excavation adds cost to pump-outs and inspections when a tank is buried. A riser is typically a one-time investment that pays for itself over just a handful of future service visits by removing that recurring cost.
Safety
Buried lids that shift or get covered by soil and grass over years can become a hidden hazard. Once a riser is installed, it should have a secured, locking lid. Accidents unfortunately do happen, so we recommend that children don’t play on or around risers. Kids will be kids, however, so it’s important to have a proper lid and installation as extra security against terrible mistakes.
Recommended maintenance practice
Regular inspection is part of good septic ownership — the EPA recommends inspecting your system every one to three years and pumping every three to five — and easy access makes it much easier for those inspections actually happen on schedule.
When You Could Use a Riser
- You were charged for digging fees during your last pump out
- You don’t know exactly where your tank’s access lid is because your tank lid is buried under a foot or more of soil, mulch, or lawn
- You want easier long-term access
- You want to make it easier to stick to a regular inspection and pumping schedule
What Professional Installation Looks Like
When Markos and Sons Sanitation installs a riser, the process includes:
- Locating and exposing the tank access point(s) — both the inlet and outlet, if your system has separate lids for each
- Sizing the riser correctly to reach grade cleanly, accounting for your specific tank depth
- Sealing the riser to the tank with a proper sealant to keep groundwater out
- Installing a secure, locking lid rated to prevent unauthorized access and falls. This is especially important with kids or pets on the property
- Grading around the riser so it sits flush and doesn’t collect standing water or become a tripping hazard
A poorly sealed riser can let groundwater and surface runoff into the tank, throwing off the natural sewage treatment process and dispersal. Correct installation matters.
Frequently Asked Questions
Do I need risers on both ends of my tank?
Most modern installs include risers on both the inlet and outlet access ports, since technicians need to inspect the outlet baffle/filter as well as pump the main chamber. If your system only has one, ask us whether adding the second is worth it for your setup.
Will a riser make my yard look bad?
Most risers sit just a few inches above grade with a low-profile lid, and many homeowners paint or landscape around them so they blend into the yard. They’re far less noticeable than a filled excavation hole.
How long does a riser last?
Quality risers are built to hold up outdoors for years with no maintenance. You might have to sweep some leaves off the lid now and then, we suppose. For longer-lasting riser lids, we advise to not drive on them if able. The lids can handle the weight of a lawn mower; however, the less that they are driven on, the longer they will last without cracks or fractures.
Can a riser be added to any septic system?
In the vast majority of cases, yes, as long as the tank and access ports are in reasonably good condition, and the size of the access port is 30” or smaller. If your tank is very old or already showing signs of damage, we would love to inspect it and see if it will need replacement soon before we add the upgrade of a riser to the tank.
The Bottom Line
A septic riser is a small investment that removes one of the annoying and expensive parts of routine septic system maintenance: digging. If you’re tired of paying excavation fees every time your tank needs attention (or you’re not even sure exactly where your access lid is) please give us a call so we can give you a free quote.
Markos and Sons Sanitation installs risers frequently. Contact us to find out whether a riser makes sense for your system, or to schedule an inspection and get one installed.