Skip to content

City water profile

Plano water quality

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

Median indexed hardness

111PPM

6 indexed ZIPs

Range 110–111.5 PPM

State comparison
At state median
State hardness rank
#315 of 523
Matched utilities
1
Active health records
0

City summary

What the indexed records say

Plano has 6 published ZIP profiles across Collin County. The indexed median is 111 PPM, compared with 111 PPM across Texas.

Among the 523 Texascities with an indexed median, Plano ranks #315from highest to lowest. Across all 1,026 state ZIP profiles, available estimates run from 5.4to 500.5 PPM.

The 110–111.5 PPM range shows how much the available ZIP estimates vary within the city label.

Hardness distribution

How local ZIP estimates compare

Soft0 ZIPs
Moderately hard6 ZIPs
Hard0 ZIPs
Very hard0 ZIPs

6 of 6 ZIP profiles have a hardness estimate. Bars count ZIP profiles, not households or laboratory samples.

Evidence quality

Distance, dates, and confidence

Median nearest distance
9.2 miles
Profiles with evidence
6/6

Confidence labels

High: 0Moderate: 6Low: 0

Observation window: Jan 5, 2016 to Jun 4, 2026.

ZIP directory

Water reports in Plano

Open a ZIP for site-level provenance and measurements.

ZIP code

75023

Moderately Hard

110.5 PPM

Nearest site
11.7 mi
Confidence
Moderate

View full ZIP evidence →

ZIP code

75024

Moderately Hard

111.5 PPM

Nearest site
7.2 mi
Confidence
Moderate

View full ZIP evidence →

ZIP code

75025

Moderately Hard

110.5 PPM

Nearest site
11.3 mi
Confidence
Moderate

View full ZIP evidence →

ZIP code

75074

Moderately Hard

110 PPM

Nearest site
9.2 mi
Confidence
Moderate

View full ZIP evidence →

ZIP code

75075

Moderately Hard

110 PPM

Nearest site
9.2 mi
Confidence
Moderate

View full ZIP evidence →

ZIP code

75093

Moderately Hard

110.5 PPM

Nearest site
7.8 mi
Confidence
Moderate

View full ZIP evidence →

Public water systems

Utilities associated with this city

City Of Plano

PWSID TX0430007

Surface water
System population served
292,059
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 Plano

Is the water hard?

The indexed city median is 111 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.