D'Iberville Water Hardness & Quality Report (2026)
Water Hardness
6.3 grains per gallon
Source
groundwater
pH Level
7.7
neutral = 7.0
Lead
0.005 mg/L
✓ Below action level
TDS
304.1 mg/L
Est. Daily Cost
$0.29
energy & soap waste
Source: USGS Water Quality Portal · Updated 2026
0–60
mg/L
Soft
61–120
mg/L
Moderately Hard
121–180
mg/L
Hard
180+
mg/L
Very Hard
Appliance Damage Report
In D'Iberville, your appliances are currently losing 14% efficiency due to mineral buildup.
| Appliance | In D'Iberville | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 6.1 yrs | 8.5 yrs | -28% |
| Washing Machine | 9.6 yrs | 12 yrs | -20% |
| Water Heater | 11.3 yrs | 15 yrs | -25% |
Regional Water Comparison
How D'Iberville compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ D'Iberville, Mississippi | 107 mg/L | 5.6 ppt | 🟡 Moderately Hard | groundwater |
| Biloxi, Mississippi | 120 mg/L | 6.1 ppt | 🟠 Hard | groundwater |
| Ocean Springs, Mississippi | 140 mg/L | 6.9 ppt | 🟠 Hard | groundwater |
| West Gulfport, Mississippi | 50 mg/L | 3.5 ppt | 🟢 Soft | groundwater |
| Gulfport, Mississippi | 113 mg/L | 5.9 ppt | 🟡 Moderately Hard | groundwater |
National Benchmark
How D'Iberville compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ D'Iberville | 107 mg/L | 🟡 Low |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes D'Iberville's Water Unique?
Local geology and source profile
D'Iberville, Mississippi, in Harrison County — a Harrison County city adjacent to Biloxi and Ocean Springs on the Mississippi Gulf Coast — receives its water from the Harrison County Water and Sewer District or City of D'Iberville Water, drawing from the Gulf Coastal Plain aquifer system through the south Mississippi distribution.
The moderately hard 107 mg/L hardness and TDS of 304.1 mg/L reflect the Harrison County Gulf Coastal supply's moderate character — the Quaternary Coastal Plain alluvium and Eocene Pascagoula Formation contain calcareous marine shell beds and clay minerals that contribute modest dissolved mineral content to the south Mississippi coastal groundwater (compare Biloxi MS: 105/298 in Harrison County comparable; Ocean Springs MS: 109/310 in Harrison County comparable; D'Iberville consistent moderate from the same Harrison County Gulf Coastal Quaternary supply). The Gulf Coastal aquifer at Harrison County — Quaternary Coastal Plain alluvium (slightly calcareous — primary hardness contributor), Eocene Pascagoula Formation (calcareous — secondary contributor), and Holocene Gulf Coast sediment (slightly calcareous — minor TDS).
At 107 mg/L with TDS 304, D'Iberville's water is moderately hard — mild scale buildup in appliances. Semi-annual descaling is appropriate. The PFAS level of 5.6 ppt is moderate — a certified drinking water filter provides added protection given the Harrison County Mississippi Gulf Coast military (Keesler AFB) presence. Review the Harrison County Water and Sewer District's annual report.
Geology & Source: D'Iberville in Harrison County draws from the Harrison County Water on the Gulf Coastal aquifer (Harrison County, south Mississippi) — the Mississippi Gulf Coast draws from Quaternary Coastal Plain alluvium (slightly calcareous) and Eocene Pascagoula Formation (calcareous) — Mississippi Harrison County Gulf Coastal Quaternary supply produces moderately hard water at 107 mg/L with TDS 304.1 mg/L.