Three Lakes Water Hardness & Quality Report (2026)
Water Hardness
9.9 grains per gallon
Source
groundwater
pH Level
8
neutral = 7.0
Lead
0.004 mg/L
✓ Below action level
TDS
450.9 mg/L
Est. Daily Cost
$0.45
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 Three Lakes, your appliances are currently losing 23% efficiency due to mineral buildup.
| Appliance | In Three Lakes | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 4 yrs | 8.5 yrs | -53% |
| Washing Machine | 7.3 yrs | 12 yrs | -39% |
| Water Heater | 8.8 yrs | 15 yrs | -41% |
Regional Water Comparison
How Three Lakes compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Three Lakes, Florida | 169.5 mg/L | 7.9 ppt | 🟠 Hard | groundwater |
| The Crossings, Florida | 149 mg/L | 7.2 ppt | 🟠 Hard | groundwater |
| Country Walk, Florida | 168.5 mg/L | 7.9 ppt | 🟠 Hard | groundwater |
| Palmetto Estates, Florida | 178.5 mg/L | 8.2 ppt | 🟠 Hard | groundwater |
| Richmond West, Florida | 156.5 mg/L | 7.5 ppt | 🟠 Hard | groundwater |
National Benchmark
How Three Lakes compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Three Lakes | 169.5 mg/L | 🟠 Moderate |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Three Lakes's Water Unique?
Local geology and source profile
Three Lakes, Florida, in Miami-Dade County — an unincorporated Miami-Dade County community adjacent to Kendale Lakes and The Hammocks in southwest Miami-Dade County — receives its water from the Miami-Dade Water and Sewer Department (MDWASD), drawing from the Biscayne Aquifer (Miami-Dade County) through the south Florida distribution.
The hard 169.5 mg/L hardness and TDS of 450.9 mg/L are harder than the north Miami-Dade Biscayne Aquifer communities (Brownsville: 127.5 mg/L; Opa-locka: 131 mg/L) — reflecting the southwest Miami-Dade Biscayne Aquifer's more concentrated calcareous character at this deeper south position. The Biscayne Aquifer at Miami-Dade County is developed in Pleistocene Miami Limestone (oolitic calcareous — primary hardness contributor), Pleistocene Fort Thompson Formation (freshwater limestone and marl), and Holocene anastomosing carbonate. The denser Pleistocene limestone at south Miami-Dade produces the hard supply.
At 169.5 mg/L, Three Lakes' water is hard — scale builds steadily in kettles and appliances, dishwashers benefit from rinse aid, and water heaters should be descaled annually. Monthly descaling is recommended. The PFAS level of 7.9 ppt warrants a certified reverse osmosis drinking water filter — Homestead Air Reserve Base (Miami-Dade County — AFFF), Opa-locka Airport (AFFF), and the south Florida aviation-industrial PFAS complex contribute to Three Lakes' elevated readings.
Geology & Source: Three Lakes in Miami-Dade County draws from the Miami-Dade Water and Sewer Department on the Biscayne Aquifer (Miami-Dade County, southeast Florida) — the Biscayne is developed in Pleistocene Miami Limestone and Pleistocene Fort Thompson Formation (calcareous limestone and marl) — Florida Miami-Dade County Biscayne Aquifer Pleistocene limestone produces hard water at 169.5 mg/L with TDS 450.9 mg/L.