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City water profile

Arkadelphia water quality

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

Median indexed hardness

51PPM

3 indexed ZIPs

Range 50.9–75.3 PPM

State comparison
20 PPM below
State hardness rank
#116 of 180
Matched utilities
1
Active health records
0

City summary

What the indexed records say

Arkadelphia has 3 published ZIP profiles across Clark County. The indexed median is 51 PPM, compared with 71 PPM across Arkansas.

Among the 180 Arkansascities with an indexed median, Arkadelphia ranks #116from highest to lowest. Across all 210 state ZIP profiles, available estimates run from 4.8to 283 PPM.

The 50.9–75.3 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

Soft2 ZIPs
Moderately hard1 ZIP
Hard0 ZIPs
Very hard0 ZIPs

3 of 3 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 miles
Profiles with evidence
3/3

Confidence labels

High: 0Moderate: 0Low: 3

Observation window: Jan 28, 2016 to May 27, 2026.

ZIP directory

Water reports in Arkadelphia

Open a ZIP for site-level provenance and measurements.

ZIP code

71923

Moderately Hard

75.3 PPM

Nearest site
36.7 mi
Confidence
Low

View full ZIP evidence →

ZIP code

71998

Soft

50.9 PPM

Nearest site
39 mi
Confidence
Low

View full ZIP evidence →

ZIP code

71999

Soft

50.9 PPM

Nearest site
39.2 mi
Confidence
Low

View full ZIP evidence →

Public water systems

Utilities associated with this city

Arkadelphia Waterworks

PWSID AR0000085

Surface water
System population served
11,855
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
Consumer Confidence RuleAR0000085Jul 1, 2025Unaddressed
Public NoticeAR0000085May 1, 2024Resolved
Revised Total Coliform RuleAR0000085Mar 1, 2023Resolved

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 Arkadelphia

Is the water hard?

The indexed city median is 51 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.