Morgan City Water Hardness & Quality Report (2026)
Water Hardness
8.5 grains per gallon
Source
river
pH Level
8
neutral = 7.0
Lead
0.008 mg/L
✓ Below action level
TDS
359.6 mg/L
Est. Daily Cost
$0.39
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 Morgan City, your appliances are currently losing 19% efficiency due to mineral buildup.
| Appliance | In Morgan City | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 4.8 yrs | 8.5 yrs | -44% |
| Washing Machine | 8.2 yrs | 12 yrs | -32% |
| Water Heater | 9.8 yrs | 15 yrs | -35% |
Regional Water Comparison
How Morgan City compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Morgan City, Louisiana | 145 mg/L | 12.6 ppt | 🟠 Hard | river |
| Thibodaux, Louisiana | 108.5 mg/L | 10.2 ppt | 🟡 Moderately Hard | river |
| Bayou Cane, Louisiana | 146 mg/L | 12.7 ppt | 🟠 Hard | river |
| Grand Bayou Mobile Home Park, Louisiana | 99 mg/L | 9.5 ppt | 🟡 Moderately Hard | river |
| Houma, Louisiana | 111.5 mg/L | 10.4 ppt | 🟡 Moderately Hard | river |
National Benchmark
How Morgan City compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Morgan City | 145 mg/L | 🟠 Moderate |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Morgan City's Water Unique?
Local geology and source profile
Morgan City, Louisiana, in St. Mary Parish — a St. Mary Parish city adjacent to Berwick and Patterson on the Atchafalaya River in south-central Louisiana — receives its water from the City of Morgan City Water Department, drawing from the Atchafalaya River through the south-central Louisiana delta distribution.
The hard 145 mg/L hardness and TDS of 359.6 mg/L reflect the St. Mary Parish Atchafalaya supply's hard alluvial character — the Pleistocene Prairie Formation and Holocene Mississippi Delta alluvium are both calcareous sediments deposited in this low-lying Louisiana coastal plain environment (compare Berwick LA: 142/354 in St. Mary Parish comparable; Patterson LA: 148/364 in St. Mary Parish comparable; Morgan City consistent hard from the same St. Mary Parish Atchafalaya River alluvial supply). The Atchafalaya River at St. Mary Parish — Pleistocene Prairie Formation (slightly calcareous — primary hardness contributor), Holocene Delta alluvium (calcareous — secondary contributor), and Holocene coastal marsh deposits (calcareous — TDS contributor).
At 145 mg/L with TDS 360, Morgan City's water is hard — scale builds in appliances over months. Quarterly descaling is appropriate. The PFAS level of 12.6 ppt is very high — a certified drinking water filter with PFAS removal is strongly recommended — the St. Mary Parish south-central Louisiana offshore oil and gas industry, petrochemical plants, and industrial corridor contribute to Morgan City's very elevated PFAS readings.
Geology & Source: Morgan City in St. Mary Parish draws from the Morgan City Water on the Atchafalaya River (St. Mary Parish, south-central Louisiana) — the Atchafalaya River at St. Mary Parish drains Pleistocene Prairie Formation (slightly calcareous) and Holocene Mississippi Delta alluvium (calcareous) — Louisiana St. Mary Parish Atchafalaya River alluvial supply produces hard water at 145 mg/L with TDS 359.6 mg/L.