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City water profile

Big Spring water quality

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

Median indexed hardness

137PPM

2 indexed ZIPs

Range 137–137 PPM

State comparison
26 PPM above
State hardness rank
#280 of 523
Matched utilities
1
Active health records
1

City summary

What the indexed records say

Big Spring has 2 published ZIP profiles across Howard County. The indexed median is 137 PPM, compared with 111 PPM across Texas.

Among the 523 Texascities with an indexed median, Big Spring ranks #280from highest to lowest. Across all 1,026 state ZIP profiles, available estimates run from 5.4to 500.5 PPM.

The 137–137 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
Hard2 ZIPs
Very hard0 ZIPs

2 of 2 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 miles
Profiles with evidence
2/2

Confidence labels

High: 0Moderate: 0Low: 2

Observation window: Jan 7, 2016 to Oct 13, 2020.

ZIP directory

Water reports in Big Spring

Open a ZIP for site-level provenance and measurements.

ZIP code

79720

Hard

137 PPM

Nearest site
32 mi
Confidence
Low

View full ZIP evidence →

ZIP code

79721

Hard

137 PPM

Nearest site
31.3 mi
Confidence
Low

View full ZIP evidence →

Public water systems

Utilities associated with this city

City Of Big Spring

PWSID TX1140001

Surface water
System population served
27,282
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
TTHMTX1140001Apr 1, 2026Unaddressed · health-based
Public NoticeTX1140001Mar 3, 2026Unaddressed
Interim Enhanced Surface Water Treatment RuleTX1140001Jan 1, 2026Resolved · health-based
TTHMTX1140001Jan 1, 2026Archived · health-based
TTHMTX1140001Oct 1, 2025Archived · health-based
LEAD AND COPPER RULE REVISIONSTX1140001Jul 2, 2025Resolved
TTHMTX1140001Jul 1, 2025Archived · health-based
Public NoticeTX1140001May 7, 2025Resolved
TTHMTX1140001Apr 1, 2025Archived · health-based
TTHMTX1140001Jan 1, 2025Archived · 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 Big Spring

Is the water hard?

The indexed city median is 137 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.