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City water profile

College Station water quality

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

Median indexed hardness

189PPM

3 indexed ZIPs

Range 189–189 PPM

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

City summary

What the indexed records say

College Station has 3 published ZIP profiles across Brazos County. The indexed median is 189 PPM, compared with 111 PPM across Texas.

Among the 523 Texascities with an indexed median, College Station ranks #221from highest to lowest. Across all 1,026 state ZIP profiles, available estimates run from 5.4to 500.5 PPM.

The 189–189 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

Soft0 ZIPs
Moderately hard0 ZIPs
Hard0 ZIPs
Very hard3 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
32.1 miles
Profiles with evidence
3/3

Confidence labels

High: 0Moderate: 0Low: 3

Observation window: Feb 17, 2016 to Jun 12, 2025.

ZIP directory

Water reports in College Station

Open a ZIP for site-level provenance and measurements.

ZIP code

77840

Very Hard

189 PPM

Nearest site
32.1 mi
Confidence
Low

View full ZIP evidence →

ZIP code

77843

Very Hard

189 PPM

Nearest site
31.2 mi
Confidence
Low

View full ZIP evidence →

ZIP code

77845

Very Hard

189 PPM

Nearest site
34.2 mi
Confidence
Low

View full ZIP evidence →

Public water systems

Utilities associated with this city

City Of College Station

PWSID TX0210002

Groundwater
System population served
104,103
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.

No violation records are included in the current lookback window.

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 College Station

Is the water hard?

The indexed city median is 189 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.