Moderate, but highly recommended to engage licensed professionals due to electrical and plumbing code complexities and the critical nature of the system for flood prevention.
Involves excavation, plumbing system integration, and dedicated electrical circuit requirements, necessitating multiple trade considerations and adherence to specific local drainage regulations.
Project Guidelines & Rules
Administrative & Permitting
2 Rules
Permit Requirement
Your local building department requires a permit for significant plumbing system alterations or replacements to ensure compliance with adopted codes.
Required Inspections
Typically requires a rough-in inspection (if significant excavation/piping) and a final inspection by the local building department to verify proper installation and code compliance.
Plumbing System Design & Materials
7 Rules
Sump Basin Material and Size
Basins shall be constructed of durable, corrosion-resistant materials (e.g., HDPE, fiberglass) suitable for below-grade installation. Size shall be adequate for anticipated water flow, commonly 18"x24" or larger. (Illinois Plumbing Code 890.130, 890.1320)
Discharge Piping Material
Schedule 40 PVC or ABS pipe is typically required for discharge lines. (Illinois Plumbing Code 890.410, 890.420)
Discharge Piping Size
Minimum 1-1/2 inch diameter (often 2-inch for better flow/reliability) for the pump discharge line. (Illinois Plumbing Code 890.1320)
Check Valve Installation
A check valve shall be installed on the discharge piping to prevent backflow into the basin when the pump cycles off. (Illinois Plumbing Code 890.1320(b))
Discharge Location & Drainage
Sump pump discharge shall drain to an approved storm sewer, stormwater detention/retention system, or grade, ensuring proper grading away from the foundation. Discharge cannot drain into sanitary sewers. Must discharge a minimum of 6 feet from the foundation and maintain positive drainage. (Illinois Plumbing Code 890.1320(c))
Frost Protection for Discharge Line
Exterior discharge piping shall be installed to prevent freezing. This typically involves burying the pipe below the local frost depth (42 inches for DuPage County) or using alternative approved frost-protected discharge methods. (2024 IRC P2904.3, Illinois Plumbing Code 890.1320)
Basin Cover/Lid
Basins shall be provided with a sealed, gas-tight cover capable of supporting anticipated loads if installed in habitable spaces or garages, to prevent gas entry and accidental falls. (Illinois Plumbing Code 890.1320(b))
Electrical System Requirements
5 Rules
Dedicated Circuit
Sump pumps shall be connected to a dedicated 15 or 20-amp branch circuit, not shared with other outlets or lighting. (2023 NEC 210.23(A)(1), 210.23(B)(2))
Ground-Fault Circuit-Interrupter (GFCI) Protection
Receptacles for sump pumps located in unfinished basements or crawl spaces shall be GFCI protected. (2023 NEC 210.8(A)(5))
Cord-and-Plug Connection
Sump pumps are typically cord-and-plug connected. The cord must be suitable for wet locations and of adequate length as supplied by the manufacturer. Extension cords are not permitted. (2023 NEC 400.8)
Wiring Methods
All electrical wiring and connections must comply with 2023 NEC Chapter 3, including proper cable type, conduit, and junction box installation where applicable.
Battery Backup Sump Pump (Recommended)
While not strictly code-mandated, installation of a battery backup sump pump system is highly recommended for continuous flood protection during power outages and is subject to the same electrical and plumbing code requirements.
Site & Installation Best Practices
4 Rules
Foundation Protection
Excavation for the sump basin shall be performed carefully to avoid undermining the foundation. Proper backfill and compaction are required to maintain structural integrity. (2024 IRC R403.1.7.2)
Grading
Final grading around the exterior discharge point must ensure positive drainage away from the foundation to prevent water re-entry into the structure. (2024 IRC R401.3)
Rodent/Pest Prevention
Exterior discharge points should be equipped with appropriate screening or covers to prevent entry of rodents or pests into the discharge line or home.
Vibration Isolation
Consideration should be given to isolation pads or flexible connectors to minimize pump noise and vibration transfer to the structure.
Top Rated Plumbing Pros in Lake County
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