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City water profile

Lake Geneva water quality

Compare local ZIP estimates, evidence quality, associated public systems, and compliance history for Lake Geneva, Wisconsin.

Median indexed hardness

414PPM

One indexed ZIP

Range 414–414 PPM

State comparison
126 PPM above
State hardness rank
#30 of 479
Matched utilities
6
Active health records
0

City summary

What the indexed records say

Lake Geneva has 1 published ZIP profile across Walworth County. The indexed median is 414 PPM, compared with 288 PPM across Wisconsin.

Among the 479 Wisconsincities with an indexed median, Lake Geneva ranks #30from highest to lowest. Across all 556 state ZIP profiles, available estimates run from 41.3to 467 PPM.

Because only one ZIP is represented, the city median and range are the same local estimate. It should not be read as multiple independent samples across the community.

Hardness distribution

How local ZIP estimates compare

Soft0 ZIPs
Moderately hard0 ZIPs
Hard0 ZIPs
Very hard1 ZIP

1 of 1 ZIP profiles have a hardness estimate. Bars count ZIP profiles, not households or laboratory samples.

Evidence quality

Distance, dates, and confidence

Median nearest distance
2.9 miles
Profiles with evidence
1/1

Confidence labels

High: 0Moderate: 1Low: 0

Observation window: May 30, 2017 to Aug 5, 2024.

ZIP directory

Water reports in Lake Geneva

Open a ZIP for site-level provenance and measurements.

ZIP code

53147

Very Hard

414 PPM

Nearest site
2.9 mi
Confidence
Moderate

View full ZIP evidence →

Public water systems

Utilities associated with this city

Lake Geneva Utility Commission

PWSID WI2650066

Groundwater
System population served
7,107
Last reported
May 29, 2026

The system names this served city; Census place overlap links the city to this ZCTA.

Lake Como Sanitary Dist 1

PWSID WI2651536

Groundwater
System population served
3,038
Last reported
May 29, 2026

The system names this served city; Census place overlap links the city to this ZCTA.

Geneva National Community Services

PWSID WI2650907

Groundwater
System population served
2,250
Last reported
May 29, 2026

The system names this served city; Census place overlap links the city to this ZCTA.

Interlaken Resort And Village

PWSID WI2650143

Groundwater
System population served
500
Last reported
May 29, 2026

The system names this served city; Census place overlap links the city to this ZCTA.

Coachmans Terrace Mhp

PWSID WI2650150

Groundwater
System population served
125
Last reported
May 29, 2026

The system names this served city; Census place overlap links the city to this ZCTA.

Sage Meadow Of Lake Geneva

PWSID WI2651013

Groundwater
System population served
33
Last reported
May 29, 2026

The system names this served city; Census place overlap links the city to this ZCTA.

Compliance history

What EPA records show

No active health-based violation appears among the associated systems in the represented EPA reporting quarter. This does not mean every contaminant was tested at every tap.

RecordSystemPeriodStatus
Lead and Copper RuleWI2650150Jan 1, 2026Unaddressed
Revised Total Coliform RuleWI2651013Sep 1, 2024Resolved
Lead and Copper RuleWI2650150Jun 1, 2024Resolved
Total Haloacetic Acids (HAA5)WI2650066Jan 1, 2022Resolved
TTHMWI2650066Jan 1, 2022Resolved

Practical next steps

Move from index to evidence

  1. 1. Open your ZIP. Check distance, dates, confidence, and the associated utility.
  2. 2. Read the current CCR. Confirm source water, detections, limits, ranges, and notices.
  3. 3. Test the tap when needed. Confirm health concerns or treatment sizing with the right method.

Questions people ask

About water in Lake Geneva

Is the water hard?

The indexed city median is 414 PPM. Open the ZIP report to verify the distance and confidence behind that estimate.

Is the tap water safe?

Compliance history is utility-wide and cannot guarantee conditions at every tap. Check current notices and test when address-specific evidence is needed.

Do I need treatment?

Choose treatment only after confirming the problem at the property. A softener targets hardness; contaminant treatment requires a matching, verified performance claim.