Tamiami Water Hardness & Quality Report (2026)
Water Hardness
6.7 grains per gallon
Source
groundwater
pH Level
7.7
neutral = 7.0
Lead
0.002 mg/L
✓ Below action level
TDS
274 mg/L
Est. Daily Cost
$0.30
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 Tamiami, your appliances are currently losing 15% efficiency due to mineral buildup.
| Appliance | In Tamiami | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 5.8 yrs | 8.5 yrs | -32% |
| Washing Machine | 9.4 yrs | 12 yrs | -22% |
| Water Heater | 11 yrs | 15 yrs | -27% |
Regional Water Comparison
How Tamiami compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Tamiami, Florida | 114 mg/L | 6.1 ppt | 🟡 Moderately Hard | groundwater |
| Sweetwater, Florida | 99.5 mg/L | 5.7 ppt | 🟡 Moderately Hard | groundwater |
| University Park, Florida | 262.5 mg/L | 10.8 ppt | 🔴 Very Hard | groundwater |
| Kendale Lakes, Florida | 259 mg/L | 10.7 ppt | 🔴 Very Hard | groundwater |
| Fountainebleau, Florida | 314.5 mg/L | 12.4 ppt | 🔴 Very Hard | groundwater |
National Benchmark
How Tamiami compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Tamiami | 114 mg/L | 🟡 Low |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Tamiami's Water Unique?
Local geology and source profile
Tamiami, Florida, an unincorporated community in west Miami-Dade County along the Tamiami Trail (US-41) — a sprawling west Miami-Dade suburban corridor named for the historic Tamiami Trail (the first paved road linking Tampa to Miami), with a major Cuban-American and Latino population, home of Florida International University's Modesto Maidique Campus — draws its municipal water supply from the Biscayne Aquifer via the Miami-Dade Water and Sewer Department (WASD), applying extensive reverse osmosis (RO) membrane treatment to manage the naturally very hard aquifer. Water hardness in Tamiami measures 114 mg/L — classified as moderately hard, notably softer than many Miami-Dade communities.
Tamiami's moderate softness — much softer than Kendale Lakes (259 mg/L) and Margate (271.5 mg/L) in the same regional system — reflects more extensive RO treatment reaching the west Miami-Dade Tamiami distribution zone. The raw Biscayne Aquifer in west Miami-Dade (Miami Limestone and Fort Thompson Formation — Pleistocene calcareous oolitic limestone and freshwater marl) carries extremely hard raw groundwater (350–450+ mg/L). Miami-Dade WASD's South District Water Treatment Plant and West District Water Treatment Plant serving the Tamiami corridor apply a higher RO blend fraction than in some other distribution zones, reducing the treated hardness to the moderate 114 mg/L.
At 114 mg/L, Tamiami residents encounter moderate scale accumulation with manageable fixtures maintenance. Miami-Dade WASD consistently delivers water meeting all Florida DEP and EPA Safe Drinking Water Act requirements.
Geology & Source: Groundwater from the Biscayne Aquifer treated with reverse osmosis (RO) blending via the Miami-Dade Water and Sewer Department (WASD) — the west Miami-Dade County Biscayne Aquifer Miami Limestone and Fort Thompson Formation (Pleistocene); moderately hard supply at 114 mg/L — reflecting a more complete RO blend in the west Miami-Dade Tamiami–Sweetwater distribution zone.