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Fernandina Beach Water Hardness & Quality Report (2026)

Water Hardness

hard

~120–179 mg/L

Hard

estimated · not lab-verified

Source

groundwater

pH Level

8.2

neutral = 7.0

Lead

0.005 mg/L

✓ Below action level

TDS

579 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 Fernandina Beach, your appliances are currently losing 20% efficiency due to mineral buildup.

ApplianceIn Fernandina BeachSoft Water CityEfficiency 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 Fernandina Beach compares to its nearest neighbours

CityHardnessPFAS (ppt)RiskSource
Fernandina Beach, Florida≈ 120–179 mg/L0 ppt🟠 Hardgroundwater
St. Marys, Georgia≈ 180+ mg/L0 ppt🔴 Very Hardgroundwater
Yulee, Florida≈ 180+ mg/L11.2 ppt🔴 Very Hardgroundwater
Kingsland, Georgia≈ 120–179 mg/L0 ppt🟠 Hardgroundwater
Atlantic Beach, Florida≈ 180+ mg/L0 ppt🔴 Very Hardgroundwater

National Benchmark

How Fernandina Beach compares to the USA average

BenchmarkHardnessAppliance Risk
Fernandina Beach≈ 120–179 mg/L🟠 Moderate
USA National Avg151 mg/L🟠 Moderate
Scarsdale Top Rated0.02 mg/L🟢 None

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What Makes Fernandina Beach's Water Unique?

Local geology and source profile

Source: GroundwaterTDS: 579 mg/LpH: 8.2

Fernandina Beach draws its water from the Floridan Aquifer System, a vast underground source providing supply for the city's approximately 16,300 residents in Nassau County. All of the municipal water comes from local groundwater reserves, processed at the Fernandina Beach WTP. This facility, located at 1180 South 5th Street, handles the treatment for the entire supply, which bypasses the need for any surface water or watershed management. For inquiries, residents can contact the utility directly or reach out to Utilities Chief Water Plant Operator Joshua Glisson. The city's 2024 Consumer Confidence Report details the water quality.

The water originates entirely from the Floridan Aquifer System, an extensive geological formation rich in Eocene-age limestone and dolomite. Formations like the Ocala Limestone are significant contributors to the water's composition. These carbonate rocks are susceptible to dissolution, a process that naturally introduces calcium and magnesium into the groundwater. This geological characteristic, common in the humid subtropical climate of northeast Florida, results in a supply that is notably hard, carrying elevated levels of dissolved minerals.

Such a hard water supply can leave noticeable spots on dishes and glassware after washing. You'll likely see scale buildup in various household fixtures and appliances, including water heaters, coffee pots, and dishwashers. Soap efficiency may also be reduced, requiring more detergent for laundry. Homeowners often notice deposits on faucets and showerheads, sometimes accompanied by corrosion. To combat scale, try soaking fixtures in white distilled vinegar overnight or using vinegar as a rinse agent in your dishwasher. Running vinegar through coffee makers, followed by thorough rinsing, can also help. Installing a water softener is a good option for reducing these aesthetic issues and extending the lifespan of appliances.

Geology & Source: Floridan Aquifer System; limestone and dolomite formations like Ocala Limestone yield hard water

Other Florida Water Reports

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Frequently Asked Questions

Is Fernandina Beach's water safe to drink?
Yes. Fernandina Beach'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 Fernandina Beach?
At ≈ 120–179 mg/L (Hard), Fernandina Beach'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 Fernandina Beach compare to the USA average?
The USA national average is 151 mg/L. Fernandina Beach (≈ 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 Fernandina Beach 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

pH

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.