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City water profile

Marvell water quality

Compare local ZIP estimates, evidence quality, associated public systems, and compliance history for Marvell, Arkansas.

Median indexed hardness

160PPM

One indexed ZIP

Range 159.5–159.5 PPM

State comparison
89 PPM above
State hardness rank
#33 of 180
Matched utilities
1
Active health records
0

City summary

What the indexed records say

Marvell has 1 published ZIP profile across Phillips County. The indexed median is 160 PPM, compared with 71 PPM across Arkansas.

Among the 180 Arkansascities with an indexed median, Marvell ranks #33from highest to lowest. Across all 210 state ZIP profiles, available estimates run from 4.8to 283 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
21.5 miles
Profiles with evidence
1/1

Confidence labels

High: 0Moderate: 1Low: 0

Observation window: Aug 17, 2016 to Jun 4, 2026.

ZIP directory

Water reports in Marvell

Open a ZIP for site-level provenance and measurements.

ZIP code

72366

Hard

159.5 PPM

Nearest site
21.5 mi
Confidence
Moderate

View full ZIP evidence →

Public water systems

Utilities associated with this city

Marvell Waterworks

PWSID AR0000421

Groundwater
System population served
1,035
Last reported
May 12, 2026

A municipal system, in-state city, and served county all agree with this Census 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 RuleAR0000421Dec 1, 2025Unaddressed
Revised Total Coliform RuleAR0000421Aug 1, 2025Resolved
E. COLIAR0000421Jun 1, 2025Unaddressed
E. COLIAR0000421May 1, 2025Resolved
Revised Total Coliform RuleAR0000421Apr 1, 2025Resolved
Revised Total Coliform RuleAR0000421Sep 1, 2022Resolved
Revised Total Coliform RuleAR0000421Mar 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 Marvell

Is the water hard?

The indexed city median is 160 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.