City water profile

Water hardness in Appleton

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

Utility-reported hardness

Not yet available

Check your provider and source →

State comparison: Unavailable
Evidence comparison rank: —
Matched utilities: 3
Active health records: 0

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 →

Match the name on your water bill

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.

Appleton Waterworks

WI4450333 · Surface water · 74,511 people served system-wide

A municipal system, in-state city, and served county all agree with this Census ZCTA.

No active health-based record in this imported snapshot

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: 0.0013 mg/L
Action level: 0.015 mg/L

9% of the listed benchmark

Monitoring period: Jan 1, 2025 to Jun 30, 2025

Violation history (2)

Imported violation history for Appleton Waterworks
Rule	Status	Period
Consumer Confidence Rule	Resolved	Jul 1, 2023 to Sep 27, 2023
Consumer Confidence Rule	Resolved	Jul 1, 2023 to Sep 27, 2023

Darboy Sanitary Dist 1

WI4450117 · Groundwater · 13,024 people served system-wide

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

No active health-based record in this imported snapshot

Find this utility’s official report →

Measurements (2)

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: 4.7e-4 mg/L
Action level: 0.015 mg/L

3% of the listed benchmark

Monitoring period: Jun 1, 2023 to Sep 30, 2023

Copper (90th percentile)

EPA SDWIS Lead and Copper Rule samples

Above action level

Reported level: 2.25 mg/L
Action level: 1.3 mg/L

173% of the listed benchmark

Monitoring period: Jul 1, 1995 to Dec 31, 1995

Violation history (1)

Imported violation history for Darboy Sanitary Dist 1
Rule	Status	Period
Public Notice	Resolved	Oct 17, 2024 to Feb 6, 2025

Maplewood Village

WI4450421 · Groundwater · 225 people served system-wide

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

No active health-based record in this imported snapshot

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: 0.0048 mg/L
Action level: 0.015 mg/L

32% of the listed benchmark

Monitoring period: Jun 1, 2024 to Sep 30, 2024

Violation history (1)

Imported violation history for Maplewood Village
Rule	Status	Period
Revised Total Coliform Rule	Resolved	Feb 1, 2026 to Feb 28, 2026

City summary

What the indexed records say

Appleton has 4 published ZIP profiles across Outagamie County and Calumet County. The regional-evidence median is 275 PPM. The city does not meet the stricter comparison standard.

The 236–433 PPM range shows how much the available ZIP estimates vary within the city label. 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 hard4 ZIPs

4 of 4 ZIP profiles have a hardness estimate. Bars count ZIP profiles, not households or laboratory samples.

Evidence quality

Distance, dates, and confidence

Median nearest distance: 23 miles
Profiles with evidence: 4/4

Confidence labels

High: 0Moderate: 0Low: 4

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

Bear Creek

Outagamie County

289 PPM median

Black Creek

Outagamie County

418 PPM median

Combined Locks

Outagamie County

433 PPM median

Hortonville

Outagamie County

170 PPM median

Kimberly

Outagamie County

433 PPM median

Little Chute

Outagamie County

433 PPM median

Search all 479 Wisconsin cities →

Questions people ask

About water in Appleton

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.