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City water profile

St. Joe water quality

Compare local ZIP estimates, evidence quality, associated public systems, and compliance history for St. Joe, Indiana.

Median indexed hardness

310PPM

One indexed ZIP

Range 310–310 PPM

State comparison
3 PPM below
State hardness rank
#234 of 386
Matched utilities
1
Active health records
1

City summary

What the indexed records say

St. Joe has 1 published ZIP profile across Dekalb County. The indexed median is 310 PPM, compared with 313 PPM across Indiana.

Among the 386 Indianacities with an indexed median, St. Joe ranks #234from highest to lowest. Across all 472 state ZIP profiles, available estimates run from 132to 371 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
19.1 miles
Profiles with evidence
1/1

Confidence labels

High: 0Moderate: 1Low: 0

Observation window: Jun 20, 2016 to Apr 12, 2022.

ZIP directory

Water reports in St. Joe

Open a ZIP for site-level provenance and measurements.

ZIP code

46785

Very Hard

310 PPM

Nearest site
19.1 mi
Confidence
Moderate

View full ZIP evidence →

Public water systems

Utilities associated with this city

St. Joe Water Department

PWSID IN5217006

Groundwater
System population served
460
Last reported
Jun 30, 2026

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

Compliance history

What EPA records show

1 unique active health-based record appears among associated systems. This does not mean every contaminant was tested at every tap.

RecordSystemPeriodStatus
Groundwater RuleIN5217006Aug 8, 2025Resolved · health-based
Groundwater RuleIN5217006Aug 8, 2025Unaddressed · health-based
Groundwater RuleIN5217006Aug 8, 2025Resolved · health-based
LEAD AND COPPER RULE REVISIONSIN5217006Oct 17, 2024Resolved
LEAD AND COPPER RULE REVISIONSIN5217006Oct 17, 2024Resolved · health-based
Consumer Confidence RuleIN5217006Oct 10, 2024Resolved
Lead and Copper RuleIN5217006Jan 1, 2024Resolved
Consumer Confidence RuleIN5217006Oct 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 St. Joe

Is the water hard?

The indexed city median is 310 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.