Water Quality in Hattiesburg, MS

Hattiesburg's water quality is good overall. Hardness is low at 53 PPM, and no contaminants exceed health guidelines. Most homes here do not need a water softener.

Hattiesburg Water Works · Source: Groundwater wells · Serves 46,805 residents

53
Hardness (PPM)
69
TDS (PPM)
1.2
Chlorine (mg/L)
4
PFAS (ppt)
3
Lead (ppb)
53 PPM 0 400 Slightly Hard
CONTAMINANT LEVELS Hardness 53 PPM TDS 69 PPM PFAS 4 ppt Lead 3 ppb Chlorine 1.2 mg/L Nitrate 1 mg/L

Hardness Scale: Where Hattiesburg Falls

Soft 060120180250400+
Generally good quality

Hattiesburg draws from deep Coastal Plain aquifer wells. Water is generally soft to moderately hard.

What Hattiesburg's Water Means for Your Home

Hattiesburg's water is slightly hard at 53 PPM. At this level, hard water is not a significant concern for most households. Scale buildup is minimal, and a water softener would provide little measurable benefit. If you are considering water treatment in Hattiesburg, focus on contaminant filtration rather than softening.

Beyond hardness, Hattiesburg's water quality is generally within EPA guidelines for regulated contaminants. Chlorine is present at 1.2 mg/L as a disinfectant residual, which is normal for municipal water systems. If you notice a pool-like taste or experience dry skin, a whole-house carbon filter is the most common and affordable solution. For homeowners who want to understand the full picture, requesting your utility's annual Consumer Confidence Report provides neighborhood-level data.

ContaminantDetectedHealth GuidelineLegal LimitStatus
Hardness (as CaCO₃)53 PPM< 60 PPMNo federal limit✓ OK
Total Dissolved Solids69 PPM< 300 PPM500 PPM✓ OK
PFAS (total)4 ppt4 ppt (EPA)4 ppt (2024)✓ OK
Lead3 ppb0 ppb (no safe level)15 ppb (action level)✓ Low
Chlorine / Chloramine1.2 mg/LTaste threshold ~1.04.0 mg/L✓ Normal
Nitrate1 mg/L5 mg/L10 mg/L✓ OK

Good news for ${esc(c.city)} residents. Your water quality is generally good. Most homes in this area do not need a water softener. If you have concerns about lead (especially in buildings constructed before 1986) or chlorine taste, a point-of-use filter is the most practical and cost-effective solution.

About Hattiesburg's Water Supply

Water Utility: Hattiesburg Water Works

Water Source: Groundwater wells

Population Served: 46,805

Hardness: 53 PPM (3.1 grains per gallon)

Water quality can vary by neighborhood and season. The values above represent typical averages reported by Hattiesburg Water Works. To get exact numbers for your address, request a copy of the most recent Consumer Confidence Report (CCR) from your utility, or have your water independently tested.

Compare Hattiesburg to Other Mississippi Cities

Jackson

60 PPM · Moderately Hard

Gulfport

107 PPM · Moderately Hard

Frequently Asked Questions About Hattiesburg Water

Is Hattiesburg tap water safe to drink?
Hattiesburg's water meets EPA legal standards for drinking water safety. However, legal limits and health-optimal levels are different things. Review the contaminant table above for specific numbers and how they compare to both legal limits and health guidelines.
Do I need a water softener in Hattiesburg?
Probably not. At 53 PPM, Hattiesburg's water is on the softer end. Most homes will not experience noticeable scale buildup. That said, if you have high-end fixtures, a glass shower enclosure, or a tankless water heater, even mild hardness can leave mineral deposits over time. A salt-free conditioner is a low-cost insurance policy in that case.
What water filter is best for Hattiesburg?
The best filter depends on which contaminants you want to address. See our softener vs. filter guide to understand the difference between these categories.
Where does Hattiesburg's water come from?
Hattiesburg's drinking water is sourced from Groundwater wells and treated by Hattiesburg Water Works. Hattiesburg draws from deep Coastal Plain aquifer wells. Water is generally soft to moderately hard.
What is the hardness of Hattiesburg water in grains per gallon?
Hattiesburg's water hardness is 3.1 grains per gallon (GPG), which equals 53 parts per million (PPM). This is classified as slightly hard. To convert: 1 GPG = 17.1 PPM.
Does Hattiesburg water damage tankless water heaters?
At 3.1 GPG, Hattiesburg's water is unlikely to cause significant issues for tankless water heaters. However, if you notice reduced flow or efficiency over time, scale buildup could be a factor. Annual flushing with vinegar is good maintenance regardless of hardness.
Is Hattiesburg water safe for babies and infants?
Hattiesburg's water meets all EPA safety standards and is generally considered safe for preparing infant formula. The hardness minerals (calcium and magnesium) are not harmful. If your home has older plumbing, running cold water for 30 seconds before use is a good precaution to flush any lead from pipes.

Data sources. Water quality data compiled from EPA SDWIS, EWG Tap Water Database, USGS water hardness studies, and the Hattiesburg Water Works Consumer Confidence Report. Hardness and contaminant levels represent typical average values and may vary by neighborhood and season. Last updated: 2026-02-12.