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City water profile

Aurora water quality

Compare local ZIP estimates, evidence quality, associated public systems, and compliance history for Aurora, Illinois.

Median indexed hardness

245PPM

6 indexed ZIPs

Range 245–245 PPM

State comparison
40 PPM below
State hardness rank
#791 of 913
Matched utilities
2
Active health records
0

City summary

What the indexed records say

Aurora has 6 published ZIP profiles across Dupage County and Will County and Kane County. The indexed median is 245 PPM, compared with 285 PPM across Illinois.

Among the 913 Illinoiscities with an indexed median, Aurora ranks #791from highest to lowest. Across all 1,065 state ZIP profiles, available estimates run from 115to 408 PPM.

The 245–245 PPM range shows how much the available ZIP estimates vary within the city label.

Hardness distribution

How local ZIP estimates compare

Soft0 ZIPs
Moderately hard0 ZIPs
Hard0 ZIPs
Very hard6 ZIPs

6 of 6 ZIP profiles have a hardness estimate. Bars count ZIP profiles, not households or laboratory samples.

Evidence quality

Distance, dates, and confidence

Median nearest distance
20.7 miles
Profiles with evidence
6/6

Confidence labels

High: 0Moderate: 6Low: 0

Observation window: Apr 12, 2016 to Apr 22, 2026.

ZIP directory

Water reports in Aurora

Open a ZIP for site-level provenance and measurements.

ZIP code

60502

Very Hard

245 PPM

Nearest site
21.2 mi
Confidence
Moderate

View full ZIP evidence →

ZIP code

60503

Very Hard

245 PPM

Nearest site
16.2 mi
Confidence
Moderate

View full ZIP evidence →

ZIP code

60504

Very Hard

245 PPM

Nearest site
18.1 mi
Confidence
Moderate

View full ZIP evidence →

ZIP code

60505

Very Hard

245 PPM

Nearest site
20.7 mi
Confidence
Moderate

View full ZIP evidence →

ZIP code

60506

Very Hard

245 PPM

Nearest site
22.5 mi
Confidence
Moderate

View full ZIP evidence →

ZIP code

60519

Very Hard

245 PPM

Nearest site
20.2 mi
Confidence
Moderate

View full ZIP evidence →

Public water systems

Utilities associated with this city

Aurora

PWSID IL0894070

Surface water
System population served
183,000
Last reported
May 27, 2026

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

Margarets Hi-Acre Mhp

PWSID IL0895285

Groundwater
System population served
300
Last reported
May 27, 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.

No violation records are included in the current lookback window.

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 Aurora

Is the water hard?

The indexed city median is 245 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.