Allapattah Water Hardness & Quality Report (2026)
Water Hardness
18.6 grains per gallon
Source
groundwater
pH Level
8.5
neutral = 7.0
Lead
0.009 mg/L
✓ Below action level
TDS
1063.8 mg/L
Est. Daily Cost
$0.85
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 Allapattah, your appliances are currently losing 42% efficiency due to mineral buildup.
| Appliance | In Allapattah | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 1.5 yrs | 8.5 yrs | -82% |
| Washing Machine | 3 yrs | 12 yrs | -75% |
| Water Heater | 5 yrs | 15 yrs | -67% |
Regional Water Comparison
How Allapattah compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Allapattah, Florida | 318 mg/L | 12.6 ppt | 🔴 Very Hard | groundwater |
| Brownsville, Florida | 127.5 mg/L | 6.6 ppt | 🟠 Hard | groundwater |
| West Little River, Florida | 168.5 mg/L | 7.9 ppt | 🟠 Hard | groundwater |
| Little Havana, Florida | 185.5 mg/L | 8.4 ppt | 🔴 Very Hard | groundwater |
| Miami, Florida | 137 mg/L | 6.9 ppt | 🟠 Hard | groundwater |
National Benchmark
How Allapattah compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Allapattah | 318 mg/L | 🔴 High |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Allapattah's Water Unique?
Local geology and source profile
Allapattah, Florida, a neighborhood in northwest Miami — a vibrant Miami neighborhood known for its large Dominican-American and Puerto Rican community, the Wynwood Arts District (adjacent), the Health District (Jackson Memorial Hospital complex), and the Allapattah produce wholesale district — draws its municipal water supply from the Biscayne Aquifer via the Miami-Dade Water and Sewer Department (WASD), applying reverse osmosis (RO) membrane treatment blended with conventionally treated supply. Water hardness in Allapattah measures 318 mg/L — classified as very hard.
Allapattah's very hard supply — among the hardest in the Miami-Dade system — reflects the northwest Miami inner-city distribution zone's lower RO blend fraction. The raw Biscayne Aquifer in northwest Miami (Miami Limestone — Pleistocene calcareous oolitic limestone) carries extremely hard groundwater (350–450+ mg/L). Miami-Dade WASD's North District Water Treatment Plant serving the northwest Miami–Hialeah corridor applies conventional treatment with a relatively low RO blend fraction to the Allapattah distribution zone, resulting in the very hard 318 mg/L at household taps. The northwest Miami inner-city distribution infrastructure (aged cast-iron mains from Miami's 1920s–1950s expansion) contributes minimal additional hardness.
At 318 mg/L, Allapattah residents face severe hard water challenges. Scale deposits form very rapidly on all fixtures and appliances — weekly descaling and appliance protection measures are strongly recommended. 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 northwest Miami city Allapattah–Wynwood neighborhood Biscayne Aquifer Miami Limestone (Pleistocene) supply zone; very hard supply at 318 mg/L — reflecting a lower RO blend fraction in the northwest Miami inner-city Allapattah distribution zone.