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Water Hardness in Hattiesburg, MS

Mississippi · 2 zip codes · 10 matched water systems

30 PPM
1.8 GPG
Soft
0Soft60120180300+
Verified — Annual Water Quality Report

City avg (weighted): 30 PPM

Dataset updated March 9, 202610 matched water systems in the city rollupIndividual systems and ZIPs can differ. Methodology

System used for this reading
City Of Hattiesburg
MS0180008
Water source: groundwater
Serves: 43,449
USGS environmental estimate: 3 PPM
Source context

How this city reading is built

This city reading is a weighted rollup across 10 matched water systems and 2 ZIP codes. Citywide readings are useful for comparison, but individual utility zones and ZIPs can differ.

Source basis
10 verified treated-water sources
10 matched systems total for this city; treated-water reports are prioritized when available.
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 in Hattiesburg

These systems are matched to Hattiesburg, MS. Citywide readings are useful for comparison, but the system serving a specific address may differ from the city average.

10 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.
City Of Hattiesburg
MS0180008
Soft
30 PPMgroundwater43,449 servedVerified — Annual Water Quality Report
Source water: 3 PPM
West Lamar Water Assn #1
MS0370011
Soft
30 PPMgroundwater18,491 servedVerified — Annual Water Quality Report
Source water: 11 PPM
North Lamar Water Association
MS0370006
Soft
30 PPMgroundwater12,778 servedVerified — Annual Water Quality Report
Source water: 11 PPM
Lamar Park Water & Sewage Assn
MS0370004
Soft
30 PPMgroundwater7,714 servedVerified — Annual Water Quality Report
Source water: 11 PPM
Arnold Line Water Association
MS0370001
Soft
30 PPMgroundwater6,600 servedVerified — Annual Water Quality Report
Source water: 11 PPM
Showing the first 5 systems. Expand to review all matched systems.

Zip Codes in Hattiesburg, MS

39401303940230

What This Means For You

Recommendations are based on the displayed 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 Hattiesburg, MS.

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Frequently Asked Questions

How hard is the water in Hattiesburg, MS?

The citywide weighted average water hardness in Hattiesburg, MS is 30 PPM (1.8 GPG), classified as soft. This is based on 10 matched water systems.

Do I need a water softener in Hattiesburg, MS?

At 30 PPM, the citywide average is relatively soft. A water softener is generally not necessary.

Is hard water in Hattiesburg, MS 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 Hattiesburg, MS?

Hattiesburg, Mississippi is served by 10 matched water systems across 2 zip codes.

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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