Des Plaines, Illinois water treatment
Des Plaines municipal service purchases Lake Michigan surface water from the City of Chicago and the Northwest Water Commission. Because a separate water utility serves certain parts of Des Plaines, we start by confirming the utility at your address before discussing a whole-home water solution. 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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WATER SUPPLIER
The City of Des Plaines purchases Lake Michigan surface water from the City of Chicago and the Northwest Water Commission; the report identifies Evanston as the Northwest Water Commission's sole supplier of finished, treated water.
Source: City of Des Plaines 2025 Consumer Confidence Report (2025)
LOCAL WATER NUMBERS
This report does not publish a hardness figure. Ask us to test your water instead of using a guessed number.
This is a system-level annual report using calendar-year 2025 data. It does not establish water conditions, plumbing materials, or treatment needs at a particular home. Some Des Plaines addresses are served by Illinois American Water rather than the City system, so the serving utility should be confirmed for the address.
Source: City of Des Plaines 2025 Consumer Confidence Report (2025)
HOMES IN THIS AREA
The 2020-2024 ACS estimate puts the median year built for Des Plaines housing units at 1966, 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
Treatment Options
We review your address’s serving utility, household goals, available space, and any relevant water information before recommending equipment. A municipal CCR alone does not determine what a particular home needs.
Local Questions
Town FAQ source: City of Des Plaines 2025 Consumer Confidence Report (2025)
The City’s 2025 CCR says Des Plaines purchases Lake Michigan surface water from the City of Chicago and the Northwest Water Commission. It identifies Evanston as the commission’s sole supplier of finished, treated water.
Not necessarily. The City says a separate water utility provides water and sewer service in certain parts of Des Plaines. Confirm the serving utility for your address; the City CCR describes the City system and is not an address-specific test.
The City’s lead table lists a 3.8 ppb 90th-percentile result, one site over the 15 ppb action level, and no violation. The report also says lead in drinking water is primarily associated with service lines and home plumbing, so a system report cannot determine conditions in one home.
No. It provides system-level information, not a diagnosis for a particular Des Plaines home. We use the report as context and discuss your serving utility, goals, plumbing setup, and available water information before suggesting whole-home options.
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