The Village maintains a network of nearly 40 miles of sanitary sewer mains and 70 miles of storm sewer mains.
The sanitary sewer system collects and carries wastewater from residential and commercial sources through the Village’s system and delivers it to the Metropolitan Water Reclamation District of Greater Chicago (MWRDGC) for treatment. Sinks, tubs, showers, toilets, washing machines and floor drains in basements are all sources of wastewater that enter the sanitary sewer system.
Sanitary Sewers and I/IInflow and Infiltration (I/I) into sanitary sewers is a major problem which to continues plague several North Shore communities. When rainwater enters the sanitary sewer during rain events, the capacity of the sanitary sewer is significantly decreased.
Decreased capacity of the sanitary sewers from I/I can contribute to basement backups and sanitary sewer overflows.
In the early 1990's, as required by the MWRDGC, the Village conducted a comprehensive condition assessment of the Village's sanitary sewer collection system in order to identify sources of I/I.
In 2017, as part of the MWRDGC's Inflow and Infiltration Control Program (IICP) the Village will be relaunching the condition assessment program of the sanitary sewer collection system.
Sanitary Sewer Backups
If you experience a sanitary sewer backup in your home, call the Public Works Department at (847) 835-4111 during business hours (8 a.m. - 4:30 p.m.). During after hours call Public Safety non-emergency number at (847) 835-4112.
Examples of sanitary sewer backups include:
- water backing up through a floor drain
- lower level toilet back up
- lower level laundry sink backup
If you have experienced sewer backups in the past, there are some measures you can take to reduce the likelihood of experiencing a sewer backup in the future:
- Install a flood control system or an overhead sewer system on your sanitary service
- Install stand pipes or caps on problematic floor drains
- Clear window well drains of debris, or consider covers
- Make sure downspouts carry water away from your house; re-grade as needed
- Install a battery back-up pump on your sump pump system
- Perform annual inspections on your storm and sanitary sewer systems to ensure their integrity
If you witness the improper disposal of waste into the storm sewer system, report the incident via the Village's Report a Concern Portal
If you experience clearwater basement flooding, report the incident via the Village's Report a Concern Portal.
Examples of clearwater flooding include:
- Seepage (through cracks in basement walls or floor)
- Water entering home through window well
- Water entering home under an exterior basement door
- Water entering garage under garage door