WATER SUPPLIER
Chicago's published water source
Lake Michigan surface water
Source: Chicago Water Quality Report 2025 (Consumer Confidence Report) (2025)
Chicago water treatment
Water Softener and Filtration in Chicago, IL
Chicago's 2025 Water Quality Report identifies Lake Michigan as the public-water source, with water purified at the Sawyer or Jardine plant before delivery through the City system. Windy City Water Pros can help you evaluate whole-home water-treatment options for your Chicago home after discussing your goals and installation site. A utility report describes the public system. It is not a reading from one home's tap, where plumbing, fixtures, sample location, and existing treatment can change the experience.
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LOCAL WATER NUMBERS
What Chicago's report lists
- Chicago's 2025 Water Quality Report says water cribs located approximately 2.5 miles offshore draw water from Lake Michigan.
- The report says the water arrives at either the Sawyer or Jardine water purification plant, where it is purified to strict safety standards.
This report does not publish a hardness figure. Ask us to test your water instead of using a guessed number.
This City of Chicago report describes the public water system and is not proof of water conditions, contaminants, hardness, treatment needs, or compliance at a specific home. Building plumbing, service-line material, fixtures, treatment equipment, and sampling location can affect water at the tap.
Source: Chicago Water Quality Report 2025 (Consumer Confidence Report) (2025)
HOMES IN THIS AREA
Chicago's housing age context
The 2020-2024 ACS estimate puts the median year built for Chicago housing units at 1953, a mid-century housing era. That is context for discussing plumbing access, fixture age, and updates at a specific address, not a condition report for any one home.
MORE LOCAL SERVICE AREAS
Nearby towns we serve
Back to all service areasTreatment Options
Whole-home and kitchen drinking-water options
We match options to your Chicago home, goals, plumbing, and available installation space rather than assuming one solution fits every address.
- Whole-home water softeners for households seeking a softening solution.
- Whole-home carbon filtration for homeowners interested in carbon filtration.
- Salt-free conditioning where it fits the home and the homeowner's goals.
- Well-water treatment only after laboratory results or a confirmed field test.
- Tank or tankless kitchen reverse osmosis available only as an add-on to a whole-home installation.
Local Questions
Chicago water-treatment FAQs
Town FAQ source: Chicago Water Quality Report 2025 (Consumer Confidence Report) (2025)
Where does Chicago's public drinking water come from?
Chicago's official 2025 Water Quality Report says water cribs approximately 2.5 miles offshore draw water from Lake Michigan. The report says the water then goes to the Sawyer or Jardine water purification plant before entering the City's distribution system.
What did Chicago report about Cryptosporidium and Giardia in 2025?
The City's 2025 report says no Cryptosporidium or Giardia was detected in source-water samples collected in 2025. That source-water statement does not measure conditions at an individual Chicago home's tap.
Does Chicago's municipal report tell me what is in my home's water?
No. The report describes Chicago's public water system, not a particular home. Building plumbing, service-line material, fixtures, existing treatment equipment, and where a sample is taken can affect conditions at the tap.
Can I add reverse osmosis for kitchen drinking water in Chicago?
Yes. A tank or tankless kitchen reverse-osmosis system is available as an add-on when we install a whole-home system. We will discuss location and installation details for your Chicago home.
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