If accessing your tank means digging through grass and dirt every time, a riser solves that for good. Here's what it does, what it costs, and how to choose one.
A septic tank riser is a rigid pipe section, usually 20 or 24 inches in diameter, that sits directly on top of your tank's access opening and extends up to ground level. A matching lid caps the top, flush or slightly above grade.
Without a riser, the access lid sits buried under 6 to 24 inches of soil, meaning every pump-out or inspection starts with a shovel. With one installed, a technician simply lifts the surface lid and gets straight to work.
Risers aren't cosmetic — they directly affect how often your tank actually gets serviced and how much that service costs.
Septic companies often charge extra for excavation. A riser removes that line item from every future invoice.
When access is easy, homeowners are far more likely to follow the recommended pump-out schedule instead of delaying it.
If something goes wrong, a technician can open the tank in minutes instead of needing to locate and dig it out first.
| Material | Typical Cost | Best For |
|---|---|---|
| Polyethylene (plastic) | $80–$200 | Most residential DIY installs |
| Fiberglass | $120–$250 | Areas with shifting soil |
| Concrete | $200–$400 | Driveways or vehicle traffic areas |
Total cost depends on whether you DIY or hire a contractor, and how many risers your tank needs — most residential tanks have one or two access points.
| Approach | Cost Range |
|---|---|
| DIY (materials only) | $100–$300 per riser |
| Professional installation | $300–$800 per riser |
| Riser + lid + lock kit | $150–$400 |
For most homeowners, this is a manageable weekend project — provided the tank's location and lid are already known and exposed. The general process: excavate down to the existing lid, measure the opening, select a matching riser size, set it in place with sealant, backfill around it, and secure the surface lid.
If your tank's exact location is unknown, or the lid is cracked or structurally compromised, that's the point to call a professional rather than DIY.
Easy access is only half the equation. SEPTIFIX supports the bacterial ecosystem that keeps your tank processing waste efficiently between pump-outs.
See How SEPTIFIX Works →More from GetHomeFixed — Septic Systems