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City water profile

Chico water quality

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

Median indexed hardness

12PPM

One indexed ZIP

Range 11.5–11.5 PPM

State comparison
99 PPM below
State hardness rank
#505 of 523
Matched utilities
1
Active health records
0

City summary

What the indexed records say

Chico has 1 published ZIP profile across Wise County. The indexed median is 12 PPM, compared with 111 PPM across Texas.

Among the 523 Texascities with an indexed median, Chico ranks #505from 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.

Hardness distribution

How local ZIP estimates compare

Soft1 ZIP
Moderately hard0 ZIPs
Hard0 ZIPs
Very hard0 ZIPs

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
4.7 miles
Profiles with evidence
1/1

Confidence labels

High: 0Moderate: 1Low: 0

Observation window: Nov 30, 2016 to Jan 25, 2017.

ZIP directory

Water reports in Chico

Open a ZIP for site-level provenance and measurements.

ZIP code

76431

Soft

11.5 PPM

Nearest site
4.7 mi
Confidence
Moderate

View full ZIP evidence →

Public water systems

Utilities associated with this city

City Of Chico

PWSID TX2490004

Groundwater
System population served
1,596
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
Public NoticeTX2490004Feb 2, 2026Unaddressed
LEAD AND COPPER RULE REVISIONSTX2490004Jul 2, 2025Resolved
E. COLITX2490004Sep 12, 2024Unaddressed

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 Chico

Is the water hard?

The indexed city median is 12 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.