City water profile

Water hardness in Pepin

Find official utility reports, understand hardness, and check the water system serving your home in Pepin, Wisconsin.

Utility-reported hardness

Not yet available

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State comparison: Unavailable
Evidence comparison rank: —
Matched utilities: 1
Active health records: 1

Your tap water

What does the utility report?

Match the utility name to your water bill. These results describe the utility’s water, not a test at your home. A ZIP can include several water systems.

Utility hardness unavailable in this index

Nearby river or groundwater samples cannot tell us the hardness coming out of your tap. Ask your water provider for total hardness as CaCO₃, or test it at home.

Find an official utility report →

Convert a hardness result →Test your tap →

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Your utility’s measurements and compliance records

These are possible serving systems. A record for one system does not apply to every home in this ZIP. Confirm your provider before interpreting a measurement or notice. Federal records can lag current utility notices.

EPA snapshot: 2026Q2. Historical window begins Jan 1, 2021.

Pepin Waterworks

WI6470141 · Groundwater · 816 people served system-wide

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

1 reported active health-based record(s) for this system

Find this utility’s official report →

Measurements (1)

An action level is a regulatory trigger, not a pass/fail health boundary. A reported zero is the value in the source record and does not establish that lead is absent at your tap.

Lead (90th percentile)

EPA SDWIS Lead and Copper Rule samples

Below action level

Reported level: 0.0053 mg/L
Action level: 0.015 mg/L

36% of the listed benchmark

Monitoring period: Jul 1, 2021 to Dec 31, 2021

Violation history (15)

Imported violation history for Pepin Waterworks
Rule	Status	Period
Lead and Copper RuleHealth-based	Unaddressed	Oct 3, 2025
Stage 1 Disinfectants and Disinfection Byproducts RuleHealth-based	Resolved	Aug 2, 2025 to Sep 15, 2025
Revised Total Coliform Rule	Resolved	Aug 1, 2025 to Aug 31, 2025
LEAD AND COPPER RULE REVISIONSHealth-based	Resolved	Oct 17, 2024 to Nov 4, 2024
Public Notice	Unaddressed	Oct 17, 2024
LEAD AND COPPER RULE REVISIONS	Resolved	Oct 17, 2024 to Nov 4, 2024
Public Notice	Unaddressed	Oct 17, 2024
Stage 1 Disinfectants and Disinfection Byproducts RuleHealth-based	Resolved	May 2, 2024 to May 6, 2024
Lead and Copper RuleHealth-based	Resolved	Feb 1, 2023 to Oct 3, 2023
Lead and Copper Rule	Resolved	Oct 1, 2021 to Oct 8, 2021
Consumer Confidence Rule	Resolved	Jul 1, 2021 to Jun 30, 2022
Consumer Confidence Rule	Resolved	Jul 1, 2021 to Jun 30, 2022
Stage 1 Disinfectants and Disinfection Byproducts RuleHealth-based	Resolved	May 2, 2021 to May 3, 2021
Public Notice	Resolved	May 1, 2021 to Jun 14, 2022
Lead and Copper Rule	Resolved	Feb 1, 2021 to Feb 3, 2021

City summary

What the indexed records say

Pepin has 1 published ZIP profile across Pepin County. The regional-evidence median is 254 PPM. The city does not meet the stricter comparison standard.

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. At least one estimate is marked low confidence, so observation distance and date deserve extra attention.

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: 11.6 miles
Profiles with evidence: 1/1

Confidence labels

High: 0Moderate: 0Low: 1

Observation window: Aug 14, 2018 to Aug 29, 2018.

ZIP directory

Water reports in Pepin

Open a ZIP for site-level provenance and measurements.

ZIP code

54759

Very Hard

254 PPM

Nearest site: 11.6 mi
Confidence: Low

View full ZIP evidence →

Practical next steps

Move from index to evidence

1. Open your ZIP. Check distance, dates, confidence, and the associated utility.
2. Read the current CCR. Confirm source water, detections, limits, ranges, and notices.
3. Use a measured hardness result. Confirm health concerns or treatment sizing with the right method.

Continue comparing

Other Wisconsin communities

Durand

Pepin County

174 PPM median

Menomonee Falls

Waukesha County

254 PPM median

Waukesha

Waukesha County

254 PPM median

Lake Delton

Sauk County

254 PPM median

Baldwin

St. Croix County

254 PPM median

Hobart

Brown County

254 PPM median

Search all 479 Wisconsin cities →

Questions people ask

About water in Pepin

Is the water hard?

Check the utility-reported result above when available. Nearby environmental samples cannot establish tap-water hardness. Ask your provider or test your tap.

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.