![]() The property owner will need to contact a plumber to clear the blockage or repair a collapsed pipe in the sewer lateral.Debris, roots, or a sewer collapse blocks or hinders the flow of sewage in the property owner’s sewer lateral, or the sewer lateral becomes overwhelmed by storm water.Blockage in the property owner's private sewer lateral.The City’s Sewer Division will take corrective action to eliminate the problem so that normal flow can be re-established. Debris, roots, or a sewer collapse blocks or hinders the flow of the sewage in the City’s combined sewer system.Unfortunately there isn’t anything that can be done to relieve this type of flooding until after the rain event subsides and sewer flow returns to normal. More storm water has entered the combined sewer system than it can handle, causing water to back-up into basements.The City’s combined sewer system has become overwhelmed by excessive rainfall.An investigation will be conducted to determine if the City sewer has contributed to your problem. Please contact the City via 311 if you suspect the water entering your basement is sewage water. If the water in the basement is discolored and has an odor, this indicates that sewage water has backed-up or entered the basement through floor drains, sump pumps, toilets or laundry sinks.However, they should be reported so the City can take appropriate action if warranted. ![]() These types of issues cannot be resolved by the City. If the water in the basement is clear, this indicates that storm water has entered the basement through window wells or doors, that storm water has seeped into the basement through cracks in the basement walls or floor, or that a sump pump has failed.There are two different types of basement flooding. An employee will be dispatched to analyze the cause of the problem as soon as possible.ĭo not use toilets and sinks unless absolutely necessary, as water sent down your drain will end up adding to the problem. If the emergency occurs after 7 p.m., call the Utilities Department after-hours emergency number at 84. dial 311 (84 outside the city) and state the nature of the emergency. In the Event of a Sewer Emergencyīetween the hours of 7 a.m. In 2009, the City received the Illinois Section – American Society of Civil Engineers Outstanding Civil Engineering Achievement of the Year Award for the Combined Sewer Relief Program. The City received the Clean Water State Revolving Fund 2006 Pisces Award for innovative use of Clean Water Act State Revolving Fund (SRF) funding to improve water quality. The Long Range Sewer Improvement Program was constructed between 19 and cost approximately $210 million to complete. This innovative approach of partial sewer separation combined with overland street flow control was utilized because it was much more cost effective than installing a completely new separate storm sewer system throughout the entire city. In a few areas separate storm sewers were installed to convey surface drainage directly to the North Shore Channel.The storm water that is forced to stay on the street due to the inlet restrictors can flow down the street for up to two blocks where it is intercepted by high capacity inlets that flow directly into the relief sewer system. This provides basement backup protection under nearly all situations. These prevent the combined sewer from becoming overloaded during moderate and extreme rainfall events including, but not limited to the 100 year design storm. The installation of flow restrictors in alley and street drainage inlets connected to the combined sewer system.The installation of larger diameter relief combined sewers at a depth that could convey storm water and overflows from the combined sewer system to the Metropolitan Water Reclamation District (MWRD) deep tunnel beneath the North Shore Channel.The program consisted of the following components. In 1990 the City Council approved a Long Range Sewer Improvement Program to mitigate property damage caused by sewage backing up into basements. Over time, increased amounts of impervious surfaces, such as paved alleys and parking lots exacerbated the flooding. As long ago as 1902, the City’s combined sewer system was declared by the Commissioner of Public Works to be “inadequate in size and depth to serve the demands of the city.” Sewage water backing up into basements was a common event during any significant rain event. The entire City of Evanston was previously served only by a combined sewer system, a system that carries both sanitary waste from homes and businesses and storm water. Sewer Repair Financial Assistance ProgramĮvanston’s Innovative Sewer Improvement Program.Environmental Lawsuit Filed Against Nicor and ComEd.Street Resurfacing, Water Main and Sewer.Neighborhood Infrastructure Improvement Programs.
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