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City water profile

Springfield water quality

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

Median indexed hardness

305PPM

8 indexed ZIPs

Range 305–305 PPM

State comparison
20 PPM above
State hardness rank
#332 of 913
Matched utilities
10
Active health records
0

City summary

What the indexed records say

Springfield has 8 published ZIP profiles across Sangamon County. The indexed median is 305 PPM, compared with 285 PPM across Illinois.

Among the 913 Illinoiscities with an indexed median, Springfield ranks #332from highest to lowest. Across all 1,065 state ZIP profiles, available estimates run from 115to 408 PPM.

The 305–305 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 hard8 ZIPs

8 of 8 ZIP profiles have a hardness estimate. Bars count ZIP profiles, not households or laboratory samples.

Evidence quality

Distance, dates, and confidence

Median nearest distance
39.9 miles
Profiles with evidence
8/8

Confidence labels

High: 0Moderate: 0Low: 8

Observation window: Jan 6, 2016 to Jun 9, 2026.

ZIP directory

Water reports in Springfield

Open a ZIP for site-level provenance and measurements.

ZIP code

62701

Very Hard

305 PPM

Nearest site
39 mi
Confidence
Low

View full ZIP evidence →

ZIP code

62702

Very Hard

305 PPM

Nearest site
37.6 mi
Confidence
Low

View full ZIP evidence →

ZIP code

62703

Very Hard

305 PPM

Nearest site
41.7 mi
Confidence
Low

View full ZIP evidence →

ZIP code

62704

Very Hard

305 PPM

Nearest site
40.1 mi
Confidence
Low

View full ZIP evidence →

ZIP code

62706

Very Hard

305 PPM

Nearest site
39 mi
Confidence
Low

View full ZIP evidence →

ZIP code

62707

Very Hard

305 PPM

Nearest site
35.4 mi
Confidence
Low

View full ZIP evidence →

ZIP code

62711

Very Hard

305 PPM

Nearest site
39.9 mi
Confidence
Low

View full ZIP evidence →

ZIP code

62712

Very Hard

305 PPM

Nearest site
43.7 mi
Confidence
Low

View full ZIP evidence →

Public water systems

Utilities associated with this city

Springfield

PWSID IL1671200

Surface water
System population served
117,444
Last reported
May 27, 2026

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

Curran-Gardner Township Pwd

PWSID IL1675350

Groundwater
System population served
6,651
Last reported
May 27, 2026

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

Grand Valley Village Mhp

PWSID IL1670070

Surface water
System population served
912
Last reported
May 27, 2026

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

Round Prairie Water Coop

PWSID IL1670090

Surface water
System population served
813
Last reported
May 27, 2026

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

Woodland Acres Mhp

PWSID IL1675185

Surface water
System population served
464
Last reported
May 27, 2026

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

Oakwood Estates

PWSID IL1670060

Surface water
System population served
420
Last reported
May 27, 2026

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

Cottonwood Cove Mhp

PWSID IL1670200

Surface water
System population served
358
Last reported
May 27, 2026

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

Forrest Park Mhp

PWSID IL1670225

Surface water
System population served
352
Last reported
May 27, 2026

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

Pheasant Run Mhp

PWSID IL1670250

Surface water
System population served
350
Last reported
May 27, 2026

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

Bissell Village Mhc

PWSID IL1670120

Surface water
System population served
220
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.

RecordSystemPeriodStatus
Revised Total Coliform RuleIL1670070Mar 1, 2026Archived
ChloramineIL1670070Mar 1, 2026Archived
Total Haloacetic Acids (HAA5)IL1670090Oct 1, 2025Archived
AtrazineIL1671200Jul 1, 2025Resolved
Consumer Confidence RuleIL1670070Jul 1, 2025Unaddressed
Consumer Confidence RuleIL1670160Jul 1, 2025Unaddressed
Consumer Confidence RuleIL1670110Jul 1, 2025Unaddressed
Consumer Confidence RuleIL1670140Jul 1, 2025Unaddressed
Total Haloacetic Acids (HAA5)IL1670070Apr 1, 2025Resolved
TTHMIL1670070Apr 1, 2025Resolved

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 Springfield

Is the water hard?

The indexed city median is 305 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.