Smoke testing is one technique utilized to identify sections of sewers which may exhibit inflow during heavy rainfall. The Village will post signage if smoke testing is scheduled in your area. The smoke is not hazardous.
Televising is a state-of-the-art technology that allows the Sewer Division to see live footage of the inside of Village sewer lines in order to properly diagnose a problem. We are able to see if sewer lines are broken, separated, decaying, or blocked with tree roots or other debris. The televising equipment is equipped with a transmitter that pinpoints the exact location of the problem. When obstructions or breaks are found in the sewer, the Sewer Division selects the most effective repair method.
Sanitary sewer main lining extends the life of our sanitary sewers by 50 years or more. This technology essentially installs a new resin pipe inside the old clay tile sewer main without digging up city streets. This method causes minimal disruption to residents during construction. The liner pipe is inserted into the main through existing manholes and cured in place with a heat process. Any given segment is usually completed in one working day. Service line connections are reopened using a robotic cutter and remote cameras. During the process, existing flows are bypassed using pumps.
In case of a ½” rain fall, the Village inspects its overland flow conveyance systems for any obstructions or debris that will prohibit water flow. The below is a list of priority locations for inspection:
1. Bridge Locations over the Middle Fork of the North Branch of the Chicago River
- Carlisle/Carriage Way
- Deerfield Rd.
2. Bridge Locations over the West Fork of the North Branch of the Chicago River
- Pfingsten Rd
- Lake Cook Rd
- Walkway Bridge from East Hackberry to West Hackberry
- Central Ave
- Deerfield Rd
- Juniper Ct
- Hazel Ave
- Wilmot Rd
3. Overland Drainage on Brierhill Road
4. Ditch Drainage on Somerset from Prairie to Cherry
5. Ditch Drainage on Broadmoor Pl from Hazel to Greenwood
6. Ditch Drainage on Cherry from Hazel to Greenwood
7. Reservoir 29A
8. Reservoir 27