Waterproofing & Leak Sealing
Stops infiltration in manholes and pipelines
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I/I Control (Inflow & Infiltration Control)
What is I/I Control?
I/I control (inflow and infiltration control) prevents excess water from entering sewer systems through cracks, joints, manholes, and defective pipes. Using trenchless polymer injection, infiltration pathways are sealed, protecting treatment plant capacity and extending infrastructure life.
Problems Solved
- Excess storm water inflow overloading sewer systems
- Ground water infiltration through cracks, joints, and manholes
- Increased treatment costs from diluted waste water
- Soil erosion caused by water migration around pipes
- Risk of sanitary sewer overflows during heavy rain events
Types of Polymers Used
High-Density Polyurethane Foams
- Expands to densify and stabilize loose backfill soils
- Provides lightweight reinforcement without added soil pressure
- Cures rapidly to minimize operational disruption
Structural Polyurethane Resins
- Creates rigid reinforcement zones behind walls and utilities
- Transfers structural loads to stable ground layers
- Extends service life of supported structures
Hydro-Insensitive Polymers
- Expands and cures in wet or groundwater conditions
- Seals voids and prevents erosion in saturated soils
- Provides long-term durability in challenging sites
Benefits of I/I Control
I/I control with polymer injection restores watertight performance in sewer systems. These trenchless solutions protect capacity, prevent overflows, and reduce costly treatment expenses.
Protect Sewer Systems From Excess Flow and Infiltration
- Blocks inflow and infiltration in sewer systems
- Protects treatment plant capacity and performance
- Provides trenchless sealing without excavation
- Reduces costs from excess waste water treatment
Key Applications
Manholes
Seals leaks and infiltration in concrete and brick structures
Sewer Pipelines
Restores watertight performance in cracked or leaking pipes
Lateral Connections
Blocks infiltration at service line tie-ins to mains
Treatment Facilities
Protects plant performance by reducing excess flow
Storm water Cross-Connections
Stops inflow through unintended storm-to-sewer connections
Utility Vaults
Seals leaks in underground structures connected to sewer systems
Services
I/I control is supported by these services:
Void Filling
Void Filling
Fills soil cavities around sewer structures
Curtain Grouting
Curtain Grouting
Forms continuous subsurface barriers to stop infiltration and protect underground utilities
Soil Stabilization
Soil Stabilization
Reinforces soils undermined by water migration
Crack Repair
Crack Repair
Seals cracks in concrete sewer assets
Chemical Grouting
Chemical Grouting
Blocks groundwater pathways and restores watertight soil containment
How the Process Works
1
Investigation
Sewer systems inspected for inflow and infiltration points
2
Planning
Injection design tailored to manholes, pipelines, or joints
3
Access
Small-diameter injection ports installed with minimal disruption
4
Injection
Expanding polymers seal leaks and block infiltration pathways
5
Monitoring
Placement tracked in real time to ensure complete sealing
6
Validation
Final inspection confirms restored watertight performance
Get Started with Expert Support
Phone
800-240-7868Follow Us
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