The Village has separated sewers: Sanitary and Storm Sewers.     
Sanitary sewers carry wastewater from home and business drains, sinks, and toilets. Sanitary sewers are generally smaller in diameter and are designed to move wastewater from individual homes and businesses to the wastewater treatment plant.

Storm sewers carry rain, snow melt and other surface waters from roofs, roads, and backyards directly to various creeks with no treatment. They are typically shallow (sometimes just a foot or two deep) and are often dry between periods of rain. Storm sewers are typically not connected to homes.

Sewer Cleaning
We perform annual maintenance, including cleaning of pipes and structures, on the approximately 280 miles of sanitary and storm sewer mains. Routine televising enables the Public Works to evaluate the sewer condition and identify maintenance needs of sewer segments.
sewer tvSewer Televising
We perform annual maintenance, including cleaning and televising of the sanitary and storm sewer systems. Routine televising enables the Public Works to evaluate the sewer condition and identify mainten
ance needs of sewer segments. Televising sewers typically involves minimal personnel positioned over manholes. Occasionally, personnel need to access locations in rear and side yards.

Additionally, the televising process requires high pressure jets to ensure a clear route and  view for the camera. Rarely, this results in bubbling toilets or other impacts to connected plumbing items, particularly on lower floors. Please contact Public Works if you have any concerns.

Sewer Lining
Lining of sewers is a cost-effective, targeted means of addressing defects and controlling infiltration issues. The work typically involves cleaning the pipe thoroughly, inserting the liner material, and inflating/curing the liner until hard. The final product is essentially a pipe within a pipe!

Sewer Lining 2023 - CopyThough lining a sewer is far less intrusive than digging up and replacing pipe, the process often requires affected residents to limit sewer usage during specific work operations. No worries, the process is typically only a handful of hours, and you will be contacted in prior to any necessary restrictions with more specific information regarding any limitations.

Residents may also notice the scent of epoxy during or shortly after lining operations. Though the smell is harmless, it’s recommended that residents periodically (monthly is typical) pour a cup of water into floor drains to keep sewer odors from entering homes.

Lake County has put together a video showing larger-diameter cleaning and inspection of sewers here:
Lake County Public Works Sanitary Sewer Cleaning

Sewer Smoke Testing
Like televising, routine inspection of sewers is necessary to ensure they continue to operate properly. Smoke testing is one method of sewer inspections used to identify deficiencies in the sewer system. Typically, smoke testing is looking to pinpoint locations of I&I (Inflow and Infiltration) which is basically additional water that does not belong in the sewer system and can cause treatment facilities to become overwhelmed.

Sanitary smoke testing involves the use of non-toxic smoke in a specific service area. The smoke is put under low pressure to move it through the pipes; this includes service pipes which connect the street sewer to homes.

The smoke should not enter your home or business unless you have defective plumbing or dry drain traps. If you have seldom used drains, please pour water in the drain to fill the trap. This should prevent smoke from entering. Drain traps
should always be filled with 1-2 cups of water to prevent sewer gases and odors from entering the building. If smoke does enter your home or business, the potential also exists for sewer gases to enter, and you should consult a licensed plumber to address the problem.
Smoke Testing Pic
In 2023, the Village contracted with Duke's Root Control, Inc. to perform smoke testing of specific areas. Duke's has an excellent Q&A page as well as videos of what you can expect: Duke's Smoke Testing.