Lake Zurich Water Treatment

Water Softener and Filtration in Lake Zurich, IL

The latest 2026 Drinking Water Quality Report (Calendar Year 2025) says Lake Zurich's public water system met the standards described in that report. 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

Lake Zurich's published water source

Groundwater from five Village wells drilled into the St. Peter and Galesville Sandstone portion of the Cambrian-Ordovician Aquifer; the report states that all five wells are within Village boundaries.

Source: 2026 Drinking Water Quality Report (Calendar Year 2025) (2025)

LOCAL WATER NUMBERS

What Lake Zurich's report lists

For combined radium 226/228 in 2025, the report lists a highest detected level of 4 pCi/L, a range of 1.23–3.63 pCi/L, an MCL of 5 pCi/L, and no violation.

This report does not publish a hardness figure. Ask us to test your water instead of using a guessed number.

This Consumer Confidence Report describes the municipal water system and reported sampling results. It does not determine water conditions at an individual home, which can be affected by building plumbing, service-line material, fixtures, and local conditions.

Source: 2026 Drinking Water Quality Report (Calendar Year 2025) (2025)

HOMES IN THIS AREA

Lake Zurich's housing age context

The 2020-2024 ACS estimate puts the median year built for Lake Zurich housing units at 1984, a late twentieth-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.

Source: U.S. Census Bureau, 2020-2024 American Community Survey 5-Year Estimates, Table B25035 (2024)

MORE LOCAL SERVICE AREAS

Nearby towns we serve

Deer Park Hawthorn Woods Kildeer North Barrington Barrington

Back to all service areas

Treatment Options

Whole-home and kitchen drinking-water options

We match the approach to your Lake Zurich home, goals, plumbing, and available space—not to a one-size-fits-all assumption about municipal water.

Whole-home water softeners for homes seeking a softening solution.
Whole-home carbon filtration for homeowners who want carbon-filtration options.
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.
Kitchen tank or tankless reverse osmosis, available only as an add-on to a whole-home installation.

Local Questions

Lake Zurich water-treatment FAQs

Town FAQ source: 2026 Drinking Water Quality Report (Calendar Year 2025) (2025)

Where does Lake Zurich municipal water come from?

Lake Zurich’s 2026 Drinking Water Quality Report says the Village uses groundwater from five wells in the St. Peter and Galesville Sandstone portion of the Cambrian-Ordovician Aquifer. The report states that all five wells are within Village boundaries.

What treatment does the Village report describe for Lake Zurich wells?

The report states that Wells 7, 8, 9, 10, and 12 each use ion-exchange treatment to reduce combined radium levels below EPA limits.

What does the latest Lake Zurich report say about combined radium?

For 2025, the report’s combined-radium 226/228 entry lists a highest detected level of 4 pCi/L, a range of 1.23–3.63 pCi/L, an MCL of 5 pCi/L, and no violation.

Does the Village report tell me what is happening at my Lake Zurich faucet?

Not by itself. The report describes the Lake Zurich municipal system and reported sampling; conditions at an individual home can also be affected by building plumbing, service-line material, fixtures, and local conditions.