Our Water
Drinking Water Quality Reports
The City of Joliet Public Utilities is dedicated to ensuring that our residents are provided with safe, drinkable water. To keep you informed, we annually publish our Drinking Water Quality Reports. These reports are full of important information regarding drinking water quality, systems management, statistical data, and water conservation. Click on the Report below that you wish to view.
As part of IEPA guidelines, buildings that are 6 units and higher that do not receive a water bill directly still need to be notified about the Water Quality Report. Please view the postcard that mailed to those locations. We also have the postcard available in Spanish.
In 2019, the City of Joliet took over operation and maintenance of the Lockport Township Water System. In 2022, the system was connected to the City of Joliet water supply. The IEPA removed Lockport Township as a separate system in August 2024 since it is now considered part of the Joliet System. Please see the Joliet Water Quality Report for water quality information.
Water System Includes
- 677 miles of water main
- 11 water treatment plants
- 10 water reservoirs
- 26 active wells
- 7 water pumping stations
- 8,741 fire hydrants
- 8,759 water main valves
- Over 46,938 service valves
Wastewater System Includes
- 601 miles sanitary pipe
- 556 miles storm sewer
- 52 pumping stations
- 13,823 sanitary manholes
- 38,654 storm water structures
- 3 wastewater treatment plants
Facility Map(PDF, 136KB) - map of Joliet water facilities, sewer pumping stations and wastewater treatment plants.
Per- and Polyfluoroalkyl Substances (PFAS)
Per- and polyfluoroalkyl substances (PFAS) are chemicals produced in the United States since the 1940s. They are used for applications ranging from firefighting to stain and waterproofing of consumer products, such as carpet, clothing, and food packaging. Some PFAS are no longer made due to environmental and human health concerns, but they persist in the environment and may contaminate surface waters and groundwaters near sites where they were made or used. Newer PFAS continue to be produced in the U.S., even though little is known about their potential effects on human health and the environment.
Most of what is known about PFAS-related health effects comes from studies of humans and animals exposed to perfluorooctanoic acid (PFOA) and perfluorooctanesulfonic acid (PFOS). PFOA and PFOS are no longer produced in the U.S. but continue to be detected in human blood. Newer PFAS that remain in production are also detected in human blood. Exposure to high levels of PFAS in contaminated drinking water may result in the following health effects:
- Increased cholesterol levels
- Changes in liver enzymes
- Hormone disruption and increased risk for thyroid disease
- Decreased odds of women becoming pregnant
- High blood pressure or pre-eclampsia during pregnancy
- Small decreases in infant birth weights
- Decreased vaccine response in children
- Increased risk of kidney or testicular cancers
Joliet UCMR5 Results are available.
For more information, please visit the Illinois Environmental Protection Agency website.
In 2020, the Illinois Environmental Protection Agency sampled the City’s treated water for 18 PFAS chemicals and found that none of the contaminants were present at concentrations greater than or equal to the minimum reporting levels. Complete sampling results are available here.
Lockport Township PFAS sampling results are available here.
Informative Videos about Utilities and Plants Operation, Maintenance and MORE!!
City of Joliet Plant Operations
City of Joliet Sanitary Sewer Lift Stations
City of Joliet Field Operations