Why Oak Park basements flood
The Village of Oak Park explains that its sewers connect to the Metropolitan Water Reclamation District system and that when rainfall exceeds the capacity of both, localized flooding and backups are likely. The Village says the effect is especially problematic in the northeast quadrant. Most Oak Park homes use gravity sewers, and many connect toilets, sinks and downspouts to the same house sewer.
Before the storm
- Disconnect gutter downspouts from the sewer and send water onto the yard, away from the foundation. The Village notes that one inch of rain on a 1,000-square-foot roof produces about 600 gallons.
- Test your sump pump by pouring water into the pit and confirm the discharge line is clear.
- Install or test a battery backup for the sump pump.
- Clear gutters, window wells and yard drains.
- Move stored items off the basement floor.
- Sign up for MWRD Overflow Action Day text alerts.
During the storm
The Village recommends delaying washing machine, dishwasher, toilet and sink use during heavy rain so less water enters the sewer. Stay out of flooded basements where electrical equipment may be live.
Long-term protection
The Village lists drain tile with a sump pump, wall and floor sealing, and overhead sewer plumbing as longer-term measures, and notes that overhead sewers are costly but effective. The Village has offered a Sewer Backup Protection Grant covering 50 percent of eligible costs up to $3,500 for an overhead sewer or backflow prevention system; check current availability with Neighborhood Services at 708.358.5410.
Read more on flood detection and prevention and basement and foundation leak detection.
After the storm
If water got in, see what to do if you have a flood in Oak Park. Dry wet materials within 24 to 48 hours where possible and document damage for your insurer.
