Brownsville Water Hardness & Quality Report (2026)
Water Hardness
7.4 grains per gallon
Source
groundwater
pH Level
7.7
neutral = 7.0
Lead
0.003 mg/L
✓ Below action level
TDS
314.5 mg/L
Est. Daily Cost
$0.34
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 Brownsville, your appliances are currently losing 17% efficiency due to mineral buildup.
| Appliance | In Brownsville | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 5.4 yrs | 8.5 yrs | -36% |
| Washing Machine | 8.9 yrs | 12 yrs | -26% |
| Water Heater | 10.5 yrs | 15 yrs | -30% |
Regional Water Comparison
How Brownsville compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Brownsville, Florida | 127.5 mg/L | 6.6 ppt | 🟠 Hard | groundwater |
| Allapattah, Florida | 318 mg/L | 12.6 ppt | 🔴 Very Hard | groundwater |
| West Little River, Florida | 168.5 mg/L | 7.9 ppt | 🟠 Hard | groundwater |
| Miami Springs, Florida | 93.5 mg/L | 5.5 ppt | 🟡 Moderately Hard | groundwater |
| Hialeah, Florida | 294.5 mg/L | 11.8 ppt | 🔴 Very Hard | groundwater |
National Benchmark
How Brownsville compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Brownsville | 127.5 mg/L | 🟠 Moderate |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Brownsville's Water Unique?
Local geology and source profile
Brownsville, Florida, in Miami-Dade County — an unincorporated Miami-Dade County community adjacent to Hialeah and Miami in the northwest Miami metro — receives its water from Miami-Dade Water and Sewer Department, drawing from the Biscayne Aquifer (Miami-Dade County) through the southeast Florida water treatment system.
The moderately hard 127.5 mg/L hardness and TDS of 314.5 mg/L are consistent with the Miami-Dade Biscayne Aquifer communities — reflecting the southeast Florida shallow Pleistocene limestone aquifer's moderate calcareous character. 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 — calcareous), and Holocene anastomosing carbonate (slightly calcareous). The shallow Pleistocene limestone produces the moderately hard southeast Florida supply.
At 127.5 mg/L, Brownsville's water is moderately hard — scale builds in kettles and appliances over months, dishwashers benefit from rinse aid, and faucet aerators need periodic cleaning. Quarterly descaling is appropriate. The PFAS level of 6.6 ppt warrants a certified drinking water filter — the Miami-Dade County northwest Miami industrial corridor, Homestead Air Reserve Base (Miami-Dade County — AFFF, the primary southeast Florida PFAS source), and the South Florida PFAS background contribute to Brownsville's readings.
Geology & Source: Brownsville in Miami-Dade County draws from the Miami-Dade Water and Sewer 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 moderately hard water at 127.5 mg/L with TDS 314.5 mg/L.