How does Four Corners's water compare to the national average?

The USA national average is 151 mg/L. Four Corners (≈ 120–179 mg/L) is 1 mg/L softer than average.

Four Corners Water Hardness & Quality Report (2026)

Water Hardness

hard

~120–179 mg/L

Hard

estimated · not lab-verified

Source

groundwater

pH Level

8.5

neutral = 7.0

Lead

0.007 mg/L

✓ Below action level

TDS

858.7 mg/L

Est. Daily Cost

$0.40

energy & soap waste

Source: See methodology section below · Updated 2026

hard~120–179 mg/LHard · 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 Four Corners, your appliances are currently losing 20% efficiency due to mineral buildup.

Appliance	In Four Corners	Soft Water City	Efficiency Loss
Kettle	6.8 yrs	8.5 yrs	-20%
Washing Machine	9.6 yrs	12 yrs	-20%
Water Heater	12 yrs	15 yrs	-20%

Regional Water Comparison

How Four Corners compares to its nearest neighbours

City	Hardness	PFAS (ppt)	Risk	Source
▶ Four Corners, Florida	≈ 120–179 mg/L	11.2 ppt	🟠 Hard	groundwater
Citrus Ridge, Florida	≈ 180+ mg/L	5 ppt	🔴 Very Hard	groundwater
Horizon West, Florida	≈ 120–179 mg/L	7 ppt	🟠 Hard	groundwater
Doctor Phillips, Florida	≈ 120–179 mg/L	12 ppt	🟠 Hard	groundwater
Lake Butler, Florida	≈ 180+ mg/L	12.2 ppt	🔴 Very Hard	groundwater

National Benchmark

How Four Corners compares to the USA average

Benchmark	Hardness	Appliance Risk
▶ Four Corners	≈ 120–179 mg/L	🟠 Moderate
USA National Avg	151 mg/L	🟠 Moderate
Scarsdale Top Rated	0.02 mg/L	🟢 None

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What Makes Four Corners's Water Unique?

Local geology and source profile

Source: GroundwaterTDS: 858.7 mg/LpH: 8.5

Four Corners, Florida, is an unincorporated community spanning Lake, Orange, Polk, and Osceola counties, served by utilities such as the Central Florida Water Control District or nearby systems like Polk County Utilities. The primary source is groundwater from the Floridan Aquifer, treated at regional plants operated by Central Polk or surrounding districts. No treatment plant is uniquely named for Four Corners in available reports, but distribution covers this multi-county area near theme parks and residential developments; service emphasizes compliance with EPA standards via regular monitoring.

The watershed contributing to Four Corners' supply is part of the broader Peace-Tampa Bay drainage basin, with recharge from rainfall infiltrating the Central Florida Ridge into the Floridan Aquifer — a confined limestone-dolomite system of Tertiary period origin. This geology features the Ocala Limestone and Avon Park Formation, which dissolve carbonates extensively, yielding a hard supply mineralised with calcium and magnesium. Karst features enhance permeability but concentrate dissolved solids without surface water influences.

Hard water leads to scale buildup in pipes, water heaters, dishwashers, and washing machines, reducing efficiency and lifespan. Faucets and fixtures often show white mineral deposits, and laundry may feel stiff without extra detergent. Regular vinegar descaling helps; for very hard conditions, a water softener or ion-exchange system — popular locally — is strongly recommended. Water quality meets EPA standards overall; four contaminants above health guidelines are noted; PFAS presence is flagged; lead/copper rule compliance is standard; treatment involves disinfection, aeration if needed, and basic filtration.

Geology & Source: Floridan Aquifer System; Eocene–Oligocene karst limestone and dolomite (Ocala Limestone, Avon Park Formation) — extensive carbonate dissolution produces hard supply rich in calcium and magnesium typical of central Florida

Other Florida Water Reports

Citrus Ridge

≈ 180+ mg/L

🔴 Very Hard

Horizon West

≈ 120–179 mg/L

🟠 Hard

Doctor Phillips

≈ 120–179 mg/L

🟠 Hard

Lake Butler

≈ 180+ mg/L

🔴 Very Hard

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Notice an error or missing data? Help us keep this page accurate. If you spot incorrect water hardness, outdated utility info, or missing details, please let us know.

All reports are reviewed by our team. Thank you for supporting data quality!

Frequently Asked Questions

Is Four Corners's water safe to drink?

Yes. Four Corners's water meets all federal safety standards. The hardness is ≈ 120–179 mg/L (Hard), which is safe to drink. High hardness affects appliances and taste, but poses no health risk.

Do I need a water softener in Four Corners?

At ≈ 120–179 mg/L (Hard), Four Corners'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 20%.

How does Four Corners compare to the USA average?

The USA national average is 151 mg/L. Four Corners (≈ 120–179 mg/L) is 1 mg/L below the national average. The softest major city is Scarsdale at just 0.02 mg/L.

Data Sources & Methodology

Water quality data for Four Corners 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.