Where does the water in 72326 come from?

Water for zip code 72326 in Colt, Arkansas is provided by 3 water systems. Contact your local utility for specific source information, or check our detailed page for your area.

Water Hardness in 72326

Colt, Arkansas · St. Francis County

56 PPM

3.3 GPG

Soft

0Soft60120180300+

High Confidence — USGS Monitoring

Dataset updated March 9, 2026Matched to 3 water systemsTap readings can vary by utility zone, treatment, and plumbing. Methodology

Source context

How this ZIP reading is built

This ZIP reading is built from 3 matched water systems. When more than one system is matched, the displayed value is weighted toward larger known service populations when that data is available.

Source basis

1 USGS-backed source

3 matched systems total for this ZIP; USGS monitoring is used where treated-water reports are unavailable.

Water source profile

Primarily groundwater

Groundwater commonly picks up calcium and magnesium after contact with rock and soil. This profile is weighted by known population served across matched systems.

Data recency

March 9, 2026

Dataset rebuilt March 9, 2026; individual utility reporting years can vary.

Hardness is a mineral-content reading, not a drinking-water safety rating. Use it for scale, appliance, and softener decisions; check your utility report or test your tap before sizing treatment equipment. See how we calculate local readings.

Water Systems Serving 72326

These are the systems matched to this ZIP code. The displayed ZIP value is weighted toward larger known service populations when population data is available.

3 water systems

PWSID is the public water system identifier. Data Source shows whether the hardness value comes from a treated-water report, USGS monitoring, or a local estimate; source year is shown when available.

Water System	Source	Hardness	Pop. Served	Data Source
Forrest City Waterworks AR0000004	groundwater	56 PPM Soft	9,986	Estimated — County Avg
St Francis Rural Water Assoc AR0000537	groundwater	56 PPM Soft	1,103	Estimated — County Avg
Colt Water Association AR0000533	groundwater	54 PPM Soft	997	High Confidence — USGS Monitoring

Forrest City Waterworks

AR0000004

Soft

56 PPMgroundwater9,986 servedEstimated — County Avg

St Francis Rural Water Assoc

AR0000537

Soft

56 PPMgroundwater1,103 servedEstimated — County Avg

Colt Water Association

AR0000533

Soft

54 PPMgroundwater997 servedHigh Confidence — USGS Monitoring

Nearby Zip Codes

7232287 72396313 7237256 7207430 7233556 7235956 7234056 7239256 72101209 7238730 7239467 7234130

What This Means For You

Recommendations are based on the displayed ZIP hardness reading. Confirm your tap reading before sizing or buying treatment equipment.

Your Water Is Soft

Your water hardness is in the soft range. You likely don't need a water softener. Enjoy your naturally soft water!

Know your water hardness?

If you've tested your water or have your utility's CCR report, share your reading to help us improve accuracy for Colt, AR (72326).

Submit Your Data

Frequently Asked Questions

Is the water hard in Colt, AR (72326)?

The average water hardness in 72326 is 56 PPM (3.3 GPG), which is classified as soft.

Do I need a water softener in 72326?

At 56 PPM, your water is relatively soft. A water softener is generally not necessary.

Is hard water in 72326 safe to drink?

Water hardness itself is a mineral-content reading, not a drinking-water safety rating. Calcium and magnesium are naturally occurring minerals, but you should check your utility's Consumer Confidence Report for contaminant and compliance information.

How many water systems serve 72326?

Zip code 72326 in Colt, Arkansas is served by 3 water systems.

Learn More About Your Water

Water Hardness Scale: PPM and GPG Chart

Use the USGS water hardness scale to compare PPM, GPG, and mg/L levels from soft to very hard water.

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How to Test Water Hardness at Home

Compare free lookups, soap tests, test strips, liquid drop kits, and lab tests for measuring water hardness.

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