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City water profile

Mason water quality

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

Median indexed hardness

351PPM

One indexed ZIP

Range 351–351 PPM

State comparison
240 PPM above
State hardness rank
#24 of 523
Matched utilities
1
Active health records
1

City summary

What the indexed records say

Mason has 1 published ZIP profile across Mason County. The indexed median is 351 PPM, compared with 111 PPM across Texas.

Among the 523 Texascities with an indexed median, Mason ranks #24from 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
34.8 miles
Profiles with evidence
1/1

Confidence labels

High: 0Moderate: 0Low: 1

Observation window: Nov 8, 2016 to Jul 7, 2021.

ZIP directory

Water reports in Mason

Open a ZIP for site-level provenance and measurements.

ZIP code

76856

Very Hard

351 PPM

Nearest site
34.8 mi
Confidence
Low

View full ZIP evidence →

Public water systems

Utilities associated with this city

City Of Mason

PWSID TX1600001

Groundwater
System population served
2,228
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

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

RecordSystemPeriodStatus
Revised Total Coliform RuleTX1600001Apr 11, 2026Unaddressed · health-based
E. COLITX1600001Feb 12, 2026Unaddressed
Lead and Copper RuleTX1600001Dec 30, 2025Unaddressed
Consumer Confidence RuleTX1600001Jul 1, 2025Resolved
E. COLITX1600001Nov 27, 2024Resolved
Gross Alpha, Excl. Radon and UTX1600001Oct 1, 2022Resolved · health-based
Lead and Copper RuleTX1600001Jul 1, 2022Resolved
Gross Alpha, Excl. Radon and UTX1600001Apr 1, 2022Resolved · health-based
Gross Alpha, Excl. Radon and UTX1600001Jan 1, 2022Resolved · health-based
Combined Radium (-226 and -228)TX1600001Oct 1, 2021Resolved · health-based

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 Mason

Is the water hard?

The indexed city median is 351 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.