Storm & Flood Damage in Glen Ellyn

Risk Factors for Storm & Flood Damage

• Combined Sewer System Overflow: The MWRD combined sewer infrastructure in Glen Ellyn was designed to handle rainfall patterns from the 1950s and 1960s. During the heavy downpours now common across the region, these systems back up, potentially forcing contaminated water into basements and lower-level spaces where infrastructure is most vulnerable.
• Aging Storm Drainage Infrastructure: Decades-old storm drains and catch basins throughout Glen Ellyn frequently clog with debris or operate below capacity during extreme rainfall. This creates localized flooding in low-lying neighborhoods, parking areas, and properties adjacent to older drainage corridors.
• Impervious Surface Expansion: Decades of residential, commercial, and road development in Glen Ellyn have replaced natural soil and vegetation with concrete, asphalt, and roofing material. These impervious surfaces prevent rainwater from soaking into the ground, causing runoff to concentrate and overwhelm local drainage systems instead.
• Heavy Clay Soil Composition: Glen Ellyn's natural soil profile includes substantial clay layers that drain poorly. Clay-heavy soils cannot absorb water quickly, leading to surface pooling and the risk of water migration toward basements and foundation walls where soil meets concrete.
• Upstream Watershed Contribution: Glen Ellyn sits downstream of multiple municipalities within the same watershed. Heavy rains across a wider region send runoff downstream toward the village, increasing flood volume beyond what local storm systems were designed to manage.
• Aging Residential Foundation Design: Many Glen Ellyn homes, particularly those built before 1980, feature basement walls and sump systems that predate modern water-management standards. Foundation cracks, deteriorated mortar, and undersized drainage systems offer little resistance to sustained water pressure during heavy storms.

Warning Signs of Storm & Flood Damage

• Water Seepage on Basement Walls or Floors: Any visible moisture, efflorescence (white mineral deposits), or wet spots on basement surfaces during or shortly after heavy rain indicates water penetration. This may start as dampness but often progresses to active leaking.
• Musty Basement Odors: A persistent earthy or musty smell in the basement signals the presence of moisture and mold growth, even if standing water is not visible. This odor typically intensifies after rainfall.
• Cracks in Foundation Walls or Floors: Existing cracks may widen or new ones may appear as water pressure builds against the foundation from outside. Horizontal cracks are particularly serious, indicating structural stress from hydrostatic pressure.
• Sump Pump Activation or Overflow: During moderate rainfall, a sump pump should cycle briefly. If it runs continuously or fails to keep up with incoming water, or if the backup pump (if present) also activates, the home's drainage system is being overwhelmed.
• Efflorescence and Staining on Walls: White, chalky deposits or rust-colored stains on basement walls and concrete indicate ongoing water penetration carrying dissolved minerals and iron through the foundation material.
• Foul Sewage Odor in Basement or Plumbing Backups: When combined sewer systems overflow, sewage may back up through basement drains, floor drains, or fixtures. This is a health hazard and a sign that water levels in the municipal system have exceeded capacity.

What Storm & Flood Damage Restoration Involves

Professional restoration of storm and flood damage in Glen Ellyn follows the IICRC S500 Standard for Water Damage Restoration. The work encompasses three interconnected phases: extraction and removal of standing water, controlled drying of structural materials and cavities, and remediation of contamination (if sewage or ground-sourced water was involved).

Technicians deploy air movers (high-velocity fans), LGR dehumidifiers (low-grain-refrigerant units that remove moisture in humid conditions common after storms), and moisture meters to monitor drying progress at foundation walls, concrete slabs, and framing members. Thermal imaging detects cold spots where water may hide in cavities or behind finished surfaces. In Glen Ellyn's clay-soil environment and with MWRD sewer involvement, contaminated materials are removed and disposed of according to Illinois Department of Public Health guidelines. The drying timeline depends on the water source, saturation depth, and materials affected—typically 5–14 days for structural components when managed correctly. Skipping intermediate steps (e.g., inadequate dehumidification) or premature wall closure leads to hidden moisture pockets and mold germination, making phased drying essential.

The Storm & Flood Damage Remediation Process

1. Emergency Assessment and Safety: Upon arrival, technicians verify that electrical systems are safe and identify contamination sources (storm runoff, sewer backup, or both). In Glen Ellyn's older homes, water may have entered the sump pit or floor drains; sewage contamination requires adherence to specific health and disposal protocols. The property is secured and any immediate safety hazards (electrical, structural) are documented. This step typically takes 30–60 minutes and informs the scope of full restoration.
2. Water Extraction and Removal: Industrial-grade pumps and wet vacuums remove standing water from basements, crawl spaces, and low-lying areas. For sewer-contaminated water, extraction equipment is isolated and specially handled per Illinois health codes. This phase eliminates bulk water and reduces drying time significantly. In Glen Ellyn's clay-heavy soils, water often pools at the foundation interface; thorough extraction here prevents ongoing hydrostatic pressure and secondary infiltration into framing or insulation.
3. Moisture Detection and Mapping: Technicians use calibrated moisture meters and thermal imaging to map water saturation in concrete slabs, foundation walls, wood framing, and hidden cavities behind drywall or in joist spaces. In older homes with concrete block or brick foundations, moisture often penetrates deeper than initially visible. This mapping determines which materials can be dried in place and which must be removed, and guides dehumidifier and air-mover placement.
4. Removal of Saturated Materials: Drywall, insulation, and flooring that cannot reach equilibrium moisture levels within the restoration timeline are removed and disposed of. In Glen Ellyn homes with sewage contamination, contaminated materials are bagged and disposed according to Illinois health department standards. Wood framing, concrete, and masonry are assessed for salvageability; some may be cleaned and dried in place, while others (if structurally compromised or contaminated) are removed.
5. Structural Drying with Dehumidification: High-capacity LGR dehumidifiers are positioned to pull moisture from cavities and deeper into concrete and framing. Air movers direct airflow across walls, floors, and foundation areas, accelerating evaporation. For Glen Ellyn properties where MWRD sewage may have backed up, the drying environment is carefully controlled to prevent mold proliferation during the drying phase. Moisture is monitored daily at key points; when readings stabilize near ambient levels for 24–48 hours, drying is complete.
6. Mold Assessment and Remediation: If mold is detected during drying or post-drying inspection, remediation follows IICRC S520 guidelines. Affected areas are isolated, cleaned, and treated; spore counts are monitored. In Glen Ellyn's humid environment post-storm, mold risk is elevated if drying is delayed, making prompt extraction and dehumidification critical.
7. Restoration and Final Inspection: Once structures reach target moisture levels and any contamination is remediated, restoration begins: replacement of drywall, flooring, insulation, and trim. A final moisture inspection and microbial assessment confirm that the property meets safety and durability standards. In older Glen Ellyn homes, this phase may also include improved foundation drainage or sump system upgrades to reduce recurrence risk.