How does Little Havana's water compare to the national average?

The USA national average is 151 mg/L. Little Havana (≈ 180+ mg/L) is 189 mg/L harder than average.

Little Havana Water Hardness & Quality Report (2026)

Water Hardness

very hard

180+ mg/L

Very Hard

estimated · not lab-verified

Source

groundwater

pH Level

7.1

neutral = 7.0

Lead

0.005 mg/L

✓ Below action level

TDS

9190 mg/L

Est. Daily Cost

$0.91

energy & soap waste

Source: See methodology section below · Updated 2026

very hard180+ mg/LVery Hard · est.

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 Little Havana, your appliances are currently losing 45% efficiency due to mineral buildup.

Appliance	In Little Havana	Soft Water City	Efficiency Loss
Kettle	4.7 yrs	8.5 yrs	-45%
Washing Machine	6.6 yrs	12 yrs	-45%
Water Heater	8.3 yrs	15 yrs	-45%

Regional Water Comparison

How Little Havana compares to its nearest neighbours

City	Hardness	PFAS (ppt)	Risk	Source
▶ Little Havana, Florida	≈ 180+ mg/L	8.4 ppt	🔴 Very Hard	groundwater
Miami, Florida	≈ 120–179 mg/L	19 ppt	🟠 Hard	groundwater
Allapattah, Florida	≈ 120–179 mg/L	12.6 ppt	🟠 Hard	groundwater
Brownsville, Florida	≈ 120–179 mg/L	6.6 ppt	🟠 Hard	groundwater
Coral Gables, Florida	≈ 180+ mg/L	7.3 ppt	🔴 Very Hard	groundwater

National Benchmark

How Little Havana compares to the USA average

Benchmark	Hardness	Appliance Risk
▶ Little Havana	≈ 180+ mg/L	🔴 High
USA National Avg	151 mg/L	🟠 Moderate
Scarsdale Top Rated	0.02 mg/L	🟢 None

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What Makes Little Havana's Water Unique?

Local geology and source profile

Source: GroundwaterTDS: 9190 mg/LpH: 7.1

Miami-Dade Water and Sewer Department (MDWASD) provides drinking water to Little Havana, a neighborhood in Miami, Miami-Dade County, Florida. The primary source is groundwater drawn from the Floridan Aquifer through numerous wellfields including the Hialeah, Northwest, and South Dade wellfields. Treatment occurs at plants including the Alexander Orr Jr. Treatment Plant and the Hialeah Treatment Plant, collectively serving over 2.4 million county residents.

The supply draws from the Floridan Aquifer, which underlies all of Florida, with recharge from the surficial aquifer and rainfall percolating through karst terrain. Key formations include the Miami Limestone — an oolitic limestone — and the overlying Hawthorn Group sediments of Miocene age. These carbonate rocks readily dissolve calcium and magnesium into percolating groundwater, resulting in a hard supply characteristic of south Florida's limestone-dominated subsurface.

Hard water promotes scale buildup in pipes, water heaters, dishwashers, and washing machines, reducing efficiency, shortening appliance lifespan, and increasing energy costs. Soap lathering is poor, which can lead to higher detergent use and dry skin or hair. Treatment at MDWASD includes aeration, lime softening for hardness adjustment, filtration, and chloramination. A water softener is recommended to further mitigate scale effects at home. Recent Consumer Confidence Reports show compliance with EPA pH standards (typically 7.5–8.5), lead and copper rules via corrosion control, and no notable PFAS exceedances.

Geology & Source: Floridan Aquifer karst system; Miami Limestone and Hawthorn Group of Miocene age — oolitic limestone and carbonate formations rich in calcium and magnesium; mineral dissolution through karst terrain produces hard groundwater typical of south

Other Florida Water Reports

Miami

≈ 120–179 mg/L

🟠 Hard

Allapattah

≈ 120–179 mg/L

🟠 Hard

Brownsville

≈ 120–179 mg/L

🟠 Hard

Coral Gables

≈ 180+ mg/L

🔴 Very Hard

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Frequently Asked Questions

Is Little Havana's water safe to drink?

Yes. Little Havana's water meets all federal safety standards. The hardness is ≈ 180+ mg/L (Very Hard), which is safe to drink. High hardness affects appliances and taste, but poses no health risk.

Do I need a water softener in Little Havana?

At ≈ 180+ mg/L (Very Hard), Little Havana's water will cause significant limescale on kettles, washing machines, and water heaters. A water softener or descaler is strongly recommended to extend appliance lifespan and reduce energy bills by up to 45%.

How does Little Havana compare to the USA average?

The USA national average is 151 mg/L. Little Havana (≈ 180+ mg/L) is 189 mg/L above the national average. The softest major city is Scarsdale at just 0.02 mg/L.

Data Sources & Methodology

Water quality data for Little Havana is derived from geographic and geological modelling of the surrounding region. No federal monitoring station data was available for this location.

Estimated

Water Hardness

Modelled estimate based on state-level USGS geological survey data for this region. No direct USGS Water Quality Portal measurement was matched to this city — the value reflects a statistical range calibrated to the state's dominant rock types and typical source water characteristics.

Estimated

Estimated from regional geology and source water characteristics. pH is correlated with water hardness and local bedrock — values may differ from utility-reported figures.

Estimated

TDS — Total Dissolved Solids

Estimated using a derived ratio from water hardness and regional conductance profiles. TDS in natural water correlates strongly with total mineral content including hardness ions.

Measured

PFAS — Perfluoroalkyl and Polyfluoroalkyl Substances

EPA UCMR5 (5th Unregulated Contaminant Monitoring Rule, 2023–2025) — sum of PFAS compounds detected at the public water system serving this city. A value of 0 indicates the system was sampled with no detection above reporting limits.

Modelled

Lead

Modelled estimate based on the EPA Lead and Copper Rule 90th-percentile tap-sample methodology. No publicly available per-city lead dataset with sufficient national coverage exists. Values are a conservative baseline derived from city population tier and infrastructure age — all estimates are maintained below the EPA action level of 0.015 mg/L.

Calculated

Appliance Lifespan

Calculated from water hardness using a linear degradation model. Baseline lifespans represent soft-water performance (kettle: 8.5 yrs, washing machine: 12.0 yrs, water heater: 15.0 yrs). Hard water mineral scale progressively reduces operational life in direct proportion to hardness concentration.