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City water profile

Shell Knob water quality

Compare local ZIP estimates, evidence quality, associated public systems, and compliance history for Shell Knob, Missouri.

Median indexed hardness

180PPM

One indexed ZIP

Range 180–180 PPM

State comparison
56 PPM below
State hardness rank
#442 of 504
Matched utilities
8
Active health records
0

City summary

What the indexed records say

Shell Knob has 1 published ZIP profile across Stone County. The indexed median is 180 PPM, compared with 236 PPM across Missouri.

Among the 504 Missouricities with an indexed median, Shell Knob ranks #442from highest to lowest. Across all 556 state ZIP profiles, available estimates run from 38.3to 483 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
Hard1 ZIP
Very hard0 ZIPs

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
14.1 miles
Profiles with evidence
1/1

Confidence labels

High: 0Moderate: 1Low: 0

Observation window: May 4, 2016 to Sep 4, 2025.

ZIP directory

Water reports in Shell Knob

Open a ZIP for site-level provenance and measurements.

ZIP code

65747

Hard

180 PPM

Nearest site
14.1 mi
Confidence
Moderate

View full ZIP evidence →

Public water systems

Utilities associated with this city

Mo American Ozark Mtn Water Company 2

PWSID MO5036163

Groundwater
System population served
583
Last reported
Jun 16, 2026

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

Mo American Ozark Mtn Water Company 1

PWSID MO5036177

Groundwater
System population served
350
Last reported
Jun 16, 2026

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

Fox Woods Subdivision

PWSID MO5036197

Groundwater
System population served
125
Last reported
Jun 16, 2026

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

Knob Hill Acres

PWSID MO5036182

Groundwater
System population served
125
Last reported
Jun 16, 2026

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

Sycamore Landing Assn

PWSID MO5036253

Groundwater
System population served
70
Last reported
Jun 16, 2026

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

Mo American Lakewood Manor Subd

PWSID MO5036020

Groundwater
System population served
50
Last reported
Jun 16, 2026

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

Shell Rock Utilities

PWSID MO5036168

Groundwater
System population served
45
Last reported
Jun 16, 2026

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

Barry County Pwsd 2

PWSID MO5036196

Groundwater
System population served
34
Last reported
Jun 16, 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
Lead and Copper RuleMO5036197Dec 30, 2025Unaddressed
Lead and Copper RuleMO5036253Dec 30, 2025Unaddressed
Lead and Copper RuleMO5036168Dec 30, 2025Unaddressed
Lead and Copper RuleMO5036196Dec 30, 2025Unaddressed
Public NoticeMO5036196Jul 31, 2025Resolved
LEAD AND COPPER RULE REVISIONSMO5036182Jul 2, 2025Unaddressed
LEAD AND COPPER RULE REVISIONSMO5036168Jul 2, 2025Unaddressed
LEAD AND COPPER RULE REVISIONSMO5036253Oct 17, 2024Resolved
Revised Total Coliform RuleMO5036182Jul 1, 2024Resolved
Consumer Confidence RuleMO5036196Jul 1, 2024Resolved

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 Shell Knob

Is the water hard?

The indexed city median is 180 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.