Groundwater infiltration occurs when water enters the system through improperly sealed access points. This added volume disrupts system operation, increases pumping frequency, and reduces long-term efficiency.
A properly designed riser system prevents infiltration by providing secure, watertight sealing at every connection point. Seal-R® components are engineered to create reliable sealing between the tank, adapter ring, riser pipe, and cover, helping protect system performance.
Why Groundwater Infiltration Must Be Prevented
Septic systems are designed to process wastewater from the structure they serve. When groundwater enters through unsealed or improperly fitted access components, it introduces volume the system was not designed to handle.
This leads to:
- Increased pumping frequency
- Reduced treatment efficiency
- Higher maintenance costs
- Premature system wear
Maintaining watertight access points protects system performance, reduce avoidable service, and support long-term reliability.
Where Infiltration Occurs in Riser Systems
Groundwater infiltration most often occurs at connection interfaces within the riser assembly. Each interface must maintain secure sealing to protect system integrity.
Critical sealing points include:
- Tank-to-adapter ring interface
- Adapter ring-to-riser pipe connection
- Riser pipe-to-cover interface
- Cover gasket and mounting surface
Failure at any of these points can allow groundwater to enter the system. Preventing infiltration requires properly fitted components and secure installation.
Adapter Rings Establish the Primary Watertight Barrier
The adapter ring forms the most critical sealing interface by creating the connection between the concrete tank opening and the riser system.
Seal-R® Adapter Rings are manufactured from solid LDPE and designed with a wide flange seating surface that creates a stable, watertight interface at the tank opening. This seating surface maintains consistent contact, supports the riser assembly, and protects against water intrusion at the tank interface.
A properly installed adapter ring:
- Establishes a dependable tank-to-riser seal
- Provides stable structural support for the riser assembly
- Helps prevent groundwater infiltration at the tank opening
- Creates the sealing foundation for the entire riser system
Because this connection sits directly at the tank opening, proper fit and secure installation are essential for long-term infiltration prevention.
Gasketed Covers Prevent Surface-Level Water Entry
The surface cover forms the final sealing interface at the top of the riser system.
Seal-R® Covers are engineered with integrated gasket sealing surfaces and secure mounting hardware designed to deliver consistent sealing pressure and secure attachment. When properly sized and installed, the gasket compresses evenly against the riser pipe, preventing water entry at the access point.
Properly installed covers:
- Maintain a watertight seal at the riser opening
- Prevent surface water from entering the system
- Protect system access between service intervals
- Support consistent sealing performance
Secure cover attachment completes the watertight riser assembly.
Exact-Fit Installation Reduces Potential Infiltration Points
Seal-R® systems are designed for use with dual-wall corrugated riser pipe, allowing cutting to exact height in the field.
This eliminates stacked riser sections and reduces the number of joints where sealing failures can occur.
This installation approach results in:
- Exact fit to finished grade
- Fewer joints and potential infiltration pathways
- More consistent sealing performance
- Reliable system protection
Fewer connection points reduce opportunities for infiltration and improve overall system reliability.
Proper Installation Is Essential for Maintaining Seal Integrity
Even properly engineered components must be installed correctly to maintain watertight performance.
Key installation considerations include:
- Secure adapter ring placement at the tank opening
- Proper riser pipe sizing and alignment
- Correct cover installation using integrated mounting hardware
- Use of appropriate sealing and fastening methods
Secure installation allows each component to maintain its sealing function and protect long-term system performance.