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City water profile

Three Rivers water quality

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

Median indexed hardness

273PPM

One indexed ZIP

Range 272.5–272.5 PPM

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

City summary

What the indexed records say

Three Rivers has 1 published ZIP profile across Live Oak County. The indexed median is 273 PPM, compared with 111 PPM across Texas.

Among the 523 Texascities with an indexed median, Three Rivers ranks #93from 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
54.7 miles
Profiles with evidence
1/1

Confidence labels

High: 0Moderate: 0Low: 1

Observation window: Sep 20, 2016 to Aug 26, 2024.

ZIP directory

Water reports in Three Rivers

Open a ZIP for site-level provenance and measurements.

ZIP code

78071

Very Hard

272.5 PPM

Nearest site
54.7 mi
Confidence
Low

View full ZIP evidence →

Public water systems

Utilities associated with this city

City Of Three Rivers

PWSID TX1490002

Surface water
System population served
4,428
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
Interim Enhanced Surface Water Treatment RuleTX1490002Oct 1, 2025Archived
Surface Water Treatment RuleTX1490002Oct 1, 2025Archived
Public NoticeTX1490002Aug 25, 2025Resolved
Interim Enhanced Surface Water Treatment RuleTX1490002Aug 1, 2025Resolved
LEAD AND COPPER RULE REVISIONSTX1490002Jul 2, 2025Resolved
Interim Enhanced Surface Water Treatment RuleTX1490002Jun 1, 2024Resolved
Consumer Confidence RuleTX1490002Jul 1, 2023Resolved
Lead and Copper RuleTX1490002Dec 30, 2021Resolved
Revised Total Coliform RuleTX1490002Jul 1, 2021Resolved
Public NoticeTX1490002Mar 20, 2021Resolved

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 Three Rivers

Is the water hard?

The indexed city median is 273 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.