M-F 8:00 to 5
P: 847.866.2942
RELATED LINKS
Water & Sewer 
DIVISIONS
The Evanston Water & Sewer Department consist of the following:
Pumping Division Filtration
Division Meter
Division
Distribution Division Sewer
Division Water
Quality Lab
The Water Filtration Division handles the operation of chemical storage mixing and settling basins and the filter and backwash system. Filter plant operators work rotating shifts, with one operator
on duty at all times to monitor the operation of all treatment equipment, perform laboratory tests and make adjustments as needed to meet water demands that vary with the seasons, weather and the time
of day. Maintenance personnel perform maintenance and repairs at 24 filters, chemical feeders, control equipment, motors, pipe systems and other related systems to provide reliable service.
Maintenance is performed twice per year on the flocculating equipment, settling basins, detention tanks and clear wells. The sludge cleaned from the settling basins is pumped through an 8" force main into a larger interceptor sewer. This sludge is then treated and disposed of by the Metropolitan Water Reclamation District of Greater Chicago. Funding for costs associated with the sludge removal is budgeted in the Filtration Division and in 1999 was approximately $450,000.
The Water Chemist monitors and tests the quality of the water at various stages throughout the treatment process. Our laboratory is certified to perform bacteriological analysis, turbidity, pH, and
fluoride sample analysis. Changes in chemical feed rates are made by the Chief of Filtration and the Water Chemist to provide water of the best possible quality with the lowest expenditure of chemicals.
PUBLIC WORKS
Water & Sewer
Divisions