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City water profile

Hattiesburg water quality

Compare local ZIP estimates, evidence quality, associated public systems, and compliance history for Hattiesburg, Mississippi.

Median indexed hardness

38PPM

3 indexed ZIPs

Range 37.8–2215 PPM

State comparison
28 PPM below
State hardness rank
#78 of 109
Matched utilities
1
Active health records
0

City summary

What the indexed records say

Hattiesburg has 3 published ZIP profiles across Forrest County and Lamar County. The indexed median is 38 PPM, compared with 66 PPM across Mississippi.

Among the 109 Mississippicities with an indexed median, Hattiesburg ranks #78from highest to lowest. Across all 146 state ZIP profiles, available estimates run from 11.8to 2560 PPM.

The 37.8–2215 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

Soft2 ZIPs
Moderately hard0 ZIPs
Hard0 ZIPs
Very hard1 ZIP

3 of 3 ZIP profiles have a hardness estimate. Bars count ZIP profiles, not households or laboratory samples.

Evidence quality

Distance, dates, and confidence

Median nearest distance
58.2 miles
Profiles with evidence
3/3

Confidence labels

High: 0Moderate: 0Low: 3

Observation window: Jun 22, 2016 to Oct 25, 2021.

ZIP directory

Water reports in Hattiesburg

Open a ZIP for site-level provenance and measurements.

ZIP code

39401

Very Hard

2215 PPM

Nearest site
59.1 mi
Confidence
Low

View full ZIP evidence →

ZIP code

39402

Soft

37.8 PPM

Nearest site
58.2 mi
Confidence
Low

View full ZIP evidence →

ZIP code

39406

Soft

37.8 PPM

Nearest site
56.1 mi
Confidence
Low

View full ZIP evidence →

Public water systems

Utilities associated with this city

City Of Hattiesburg

PWSID MS0180008

Groundwater
System population served
43,449
Last reported
May 18, 2026

The system names this served city; Census place overlap links the city to this 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
Total Haloacetic Acids (HAA5)MS0180008Oct 1, 2023Resolved
TTHMMS0180008Oct 1, 2023Resolved
Total Haloacetic Acids (HAA5)MS0180008Oct 1, 2022Resolved
TTHMMS0180008Oct 1, 2022Resolved
Lead and Copper RuleMS0180008Oct 1, 2016Unaddressed
Lead and Copper RuleMS0180008Oct 1, 2016Unaddressed

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 Hattiesburg

Is the water hard?

The indexed city median is 38 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.