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City water profile

Aransas Pass water quality

Compare local ZIP estimates, evidence quality, associated public systems, and compliance history for Aransas Pass, Texas.

Median indexed hardness

437PPM

One indexed ZIP

Range 437–437 PPM

State comparison
326 PPM above
State hardness rank
#7 of 523
Matched utilities
1
Active health records
0

City summary

What the indexed records say

Aransas Pass has 1 published ZIP profile across San Patricio County. The indexed median is 437 PPM, compared with 111 PPM across Texas.

Among the 523 Texascities with an indexed median, Aransas Pass ranks #7from highest to lowest. Across all 1,026 state ZIP profiles, available estimates run from 5.4to 500.5 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. 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 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
56.8 miles
Profiles with evidence
1/1

Confidence labels

High: 0Moderate: 0Low: 1

Observation window: Feb 1, 2016 to Feb 9, 2016.

ZIP directory

Water reports in Aransas Pass

Open a ZIP for site-level provenance and measurements.

ZIP code

78336

Very Hard

437 PPM

Nearest site
56.8 mi
Confidence
Low

View full ZIP evidence →

Public water systems

Utilities associated with this city

City Of Aransas Pass

PWSID TX2050015

Surface water
System population served
8,088
Last reported
Jun 26, 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
ChlorineTX2050015Oct 1, 2025Resolved
Consumer Confidence RuleTX2050015Jul 1, 2025Unaddressed
Public NoticeTX2050015May 1, 2025Resolved
ChlorineTX2050015Apr 1, 2025Resolved
LEAD AND COPPER RULE REVISIONSTX2050015Oct 17, 2024Resolved · health-based
LEAD AND COPPER RULE REVISIONSTX2050015Oct 17, 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 Aransas Pass

Is the water hard?

The indexed city median is 437 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.