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    DeKalb, Illinois
  • Thursday 01:26 PM
    30th of March, 2017

    Ph. 1B Improvements Bid Results

    The Phase 1B Improvements bidding process was at 10am Today.

    The bid results can be found at the link below

    Bid Results


    2017 Hollister Avenue Demolition -

    The advertisement for bid can be found at the link below

    Advertisement for Bids

    Looking for Leaks

    Sewer backups on a rainy day don’t originate in the sewers. On a dry day in the heat of the summer, the public system works perfectly, no matter how many residents and students at Northern flush their toilets or take showers. The number of people who take showers and flush doesn’t get any greater when it rains.

    Deficits of an Old Collection System

    The 130 miles of sanitary sewer we took over in November of 1987 and now maintain came to us in very bad condition. The average age of all sanitary main in town is fifty years. Some of it is in surprisingly good shape. Much of it is not.

    Water that should not be in the sanitary system enters it through cracks in the mains, improperly connected house service laterals, and something called “infiltration,” in which water travels from where there’s more of it (the ground during wet weather) to where there’s less of it (the sanitary sewer) through osmosis.

    Identifying Problem Areas


    As part of ongoing sanitary sewer improvement planning, DeKalb Sanitary District do testing to evaluate the condition of the sanitary sewers.

    These kinds of tests are used:

    1. A television camera is inserted into the main sewer lines to observe their conditions. Water is pumped into adjacent street storm sewers to look for cross flooding.
    2. Manholes are inspected to identify those in need of repair.
    3. A non-toxic smoke is blown into the sanitary sewer mains and used as a visual tracer to help determine the condition of the sewer pipes.

    Restoring Collection System Integrity

    DeKalb Sanitary District has aggressively been attacking intrusions of storm and groundwater into the sanitary collection system by

    • repairing and replacing old public sanitary sewer mains
    • making sure new sewer connections are done right
    • helping homeowners find and correct illegal installations
    • educating people about the need to keep storm water out of the sanitary system
    • working with the City of DeKalb to restore storm system integrity

    Contact Us