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Water Division Information



Water Division Overview

DuPage County's Water Division owns and operates six water systems within unincorporated areas of the County:

  • Southeast Regional Water System, in Darien
  • Greene Road/Hobson Valley Water System, in Woodridge
  • Steeple Run Water System, in Lisle
  • Glen Ellyn Heights Water System, in Glen Ellyn
  • North Regional Water Facility, in Itasca
  • York Township Water System, in Lombard

Together a combined population of about 14,000 people are served , distributing just over 400 million gallons of water a year through approximately 75 miles of pipe.

With the exception of the North Regional Water Facility, all systems distribute Lake Michigan water.

The North Regional Water Facility processes well water through a nanofiltration treatment system employing selective membrane based cross-flow filtration for the removal of contaminants responsible for water hardness and discoloration. Customers receive a purified water with a hardness value of three to five grains per gallon.

All County Water Division systems comply with Illinois Environmental Protection Agency (IEPA) regulatory policies including regular bacteriological and contaminant testing of standby wells and distribution points in accordance with IEPA guidelines.

It is the goal of the DuPage County Water Division to constantly improve customer water quality and service. If you have questions, concerns or would like further information about any of our water systems, please contact us at 630-964-7503.

Connecting to Water Service

For unincorporated DuPage County communities we may be able to assist you with providing a safe drinking water supply based upon your location, nearby water sources, raw water characteristics and the availability of capital funding. Please contact our Regulatory Manager to discuss the possibilities of setting up a Special Service Area at 630-407-6679.

Also check out the Water Connection Assistance Program to explore funding assistance in connecting from a private or community well.

Cross-Connection Control Program
What is CCCP program

To protect the integrity of our drinking water supply and for your health and safety, a Cross-Connection Control Program (CCCP) is included in the DuPage County Water Supply, Distribution and Wastewater Treatment Ordinance and provides the following:

  • Authority to require certain backflow prevention devices within any residential or commercial property that is connected to the County water supply;
  • Promotion of compliance with public water supply safety regulations in the Federal Safe Drinking Water Act, the Illinois Environmental Protection Agency’s Regulation Title 35, and the Illinois Plumbing Code, and;
  • Protection of the public drinking water supply from backflow contamination through cross-connections.

A cross-connection is any piping arrangement (actual or potential) between the drinking water supply and any other water source, which under certain conditions, may result in backflow contamination into the drinking water supply. Examples of cross-connection hazards include underground sprinkler irrigation systems, fire protection systems, pools and hot tubs, and industrial ice machines, among others.

The Illinois Environmental Protection Agency (IEPA) requires that we conduct a biannual All Drinking Water System Connection Survey. This survey is an integral part of the program, in which we rely on our water customers to provide accurate information regarding the hazards present at the property. As a result, a survey has been prepared to assess risk and compile backflow prevention device data for properties serviced by DuPage County Public Works. Customers have the choice of filling out the electronic survey (E-Survey) or filling out the PDF and submitting the survey to our department manually. This program is intended to protect all drinking water customers, and your active participation is required.

If you have any questions, or require additional information, please contact the CCCP manager directly at 630-207-6400.

For testing companies filing reports, please send a copy via email to rpzdata@dupagecounty.gov

Information about Lead in Drinking Water
Re-Opening of Buildings to Avoid Water Stagnation
General Information

Federal and State agencies have provided guidance for "re-opening" of buildings, identifying best practices and approaches to ensure proper addressing of potential water quality issues that may arise from water stagnation. We encourage owners of buildings and businesses anticipating reopening to follow these Federal and State guidelines outlined below. In conjunction, DuPage County Public Works will make the necessary efforts to work closely with businesses and individuals to ensure water quality standards are continuing to be met.

Hydrant Flushing
Hydrant Flushing Activities Will Be Taking Place. Please Pay Attention To When Your Portion Is Scheduled To Be Flushed.

DuPage County Public Works - Water Division will be performing hydrant flushing in our NRWF/Nordic water system in Itasca on Tuesday, July 24 2023 from 9:00 AM to 1:00 PM, or until the last water main in the system is flushed.

Signs will be posted in the area before the start of hydrant flushing. View information regarding best practices during and after hydrant flushing. For further information, please contact our office at 630-964-7503 

Please Call Us with any water quality complaints to 630-964-7503.

Always review and follow procedures for flushing your water lines as recommended after these activities.

Watering Restriction Guidelines
Effective Dates May 15 through September 15

The following restrictions shall be in effect all DuPage County Water Systems from May 15 through September 15 as follows:

Water shall not be used on any day between the hours of 10:00 A.M. and 7:00 P.M. for the purpose of:

  • Watering or sprinkling gardens, lawns, trees, shrubs and other outdoor plants, except that such restrictions shall not prohibit the watering of newly planted gardens, lawns, trees, shrubs and plants with hand held water devices.
  • Filling swimming pools; and
  • Washing vehicles, houses, trailers, driveways and sidewalks.

Outside watering will be allowed before 10:00 A.M. or after 7:00 P.M., as determined by street number and day of the month (odd/even sequence). Odd street addresses may water on the odd days of the month and even street addresses may water on the even days of the month.

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