Goulds Water Hardness & Quality Report (2026)
Water Hardness
9.1 grains per gallon
Source
groundwater
pH Level
7.9
neutral = 7.0
Lead
0.004 mg/L
✓ Below action level
TDS
403.8 mg/L
Est. Daily Cost
$0.41
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 Goulds, your appliances are currently losing 21% efficiency due to mineral buildup.
| Appliance | In Goulds | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 4.5 yrs | 8.5 yrs | -47% |
| Washing Machine | 7.8 yrs | 12 yrs | -35% |
| Water Heater | 9.4 yrs | 15 yrs | -37% |
Regional Water Comparison
How Goulds compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Goulds, Florida | 155.5 mg/L | 7.5 ppt | 🟠 Hard | groundwater |
| South Miami Heights, Florida | 248 mg/L | 10.4 ppt | 🔴 Very Hard | groundwater |
| Princeton, Florida | 90 mg/L | 5.4 ppt | 🟡 Moderately Hard | groundwater |
| Cutler Ridge, Florida | 220 mg/L | 9.5 ppt | 🔴 Very Hard | groundwater |
| Cutler Bay, Florida | 158 mg/L | 7.5 ppt | 🟠 Hard | groundwater |
National Benchmark
How Goulds compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Goulds | 155.5 mg/L | 🟠 Moderate |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Goulds's Water Unique?
Local geology and source profile
Goulds, Florida, in Miami-Dade County — a Miami-Dade County unincorporated community adjacent to Cutler Bay and Homestead in south Miami-Dade — receives its water from Miami-Dade Water and Sewer Department, drawing from the Biscayne Aquifer through the south Florida distribution.
The hard 155.5 mg/L hardness and TDS of 403.8 mg/L reflect the south Miami-Dade Biscayne Aquifer supply's hard calcareous character — the Pleistocene Miami Limestone and Holocene Fort Thompson Formation are calcareous carbonate formations in the shallow south Florida karst, with the elevated TDS reflecting carbonate dissolution and slight saltwater intrusion in the coastal south Miami-Dade zone (compare Cutler Bay FL: 152/396 in Miami-Dade County comparable; Homestead FL: 158/411 in Miami-Dade County comparable; Goulds consistent hard from the same Miami-Dade County Biscayne Aquifer Pleistocene calcareous supply). The Biscayne Aquifer — Pleistocene Miami Limestone (highly calcareous — primary hardness contributor), Holocene Fort Thompson Formation (calcareous — secondary contributor), and Holocene coastal marl (slightly calcareous — TDS contributor).
At 155.5 mg/L with TDS 404, Goulds' water is hard — scale builds in appliances. Quarterly descaling is appropriate. The PFAS level of 7.5 ppt warrants a certified drinking water filter — the Miami-Dade County south Florida former military (Homestead ARB, former Naval Air Station) and agricultural sources contribute to Goulds' elevated PFAS readings.
Geology & Source: Goulds in Miami-Dade County draws from the Miami-Dade Water and Sewer on the Biscayne Aquifer (Miami-Dade County, southeast Florida) — the Biscayne Aquifer is developed in Pleistocene Miami Limestone (highly calcareous) and Holocene Fort Thompson Formation (calcareous) — Florida Miami-Dade County Biscayne Aquifer Pleistocene calcareous supply produces hard water at 155.5 mg/L with TDS 403.8 mg/L.