Income and Water Scores in Florida ZIP codes

Median household income and Water Score for 166 Florida ZIP codes, side by side. Correlation, not cause.

Across 166 Florida ZIP codes, the rank correlation between median household income and Water Score is 0.24. Correlation, not cause.

A rank correlation runs from -1 to 1. Zero means no relationship, and 1 means the two move together in the same order.

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Data as of October 24, 2026

Median household income and Water Score, one dot per ZIP code

ACS 5-year 2020–2024, median household income (ZCTA, approximates ZIP).

Each dot is one ranked ZIP code. The short line in each income band marks that band's median Water Score. Correlation, not cause.

Correlation, not cause. The chart compares areas, not households. A ZIP code's income says nothing about any one home.

Median Water Score by income band

Median Water Score by income band
Income band	ZIP codes	Median Water Score	Lowest to highest
Under $50k	10	50	49 – 82
$50k to $75k	63	82	50 – 100
$75k to $100k	53	82	50 – 100
$100k to $150k	35	90	50 – 100
$150k or more	5	76	50 – 100

Left out: 120 of the 286 ranked ZIP codes. 108 have no ACS income estimate (for example P.O. box ZIP codes), 12 have a margin of error above 20% of the estimate, and 0 have fewer than 1,000 residents.

Thresholds: a ZIP code is charted only if its ACS margin of error (90%) is at most 20% of its median income and it has at least 1,000 residents.

Correlation, not cause.

These are monitoring results, not violations.

Sources: EPA Safe Drinking Water Act (SDWA) data, ECHO; EPA Unregulated Contaminant Monitoring Rule (UCMR 3, 4 and 5); Florida DEP drinking water chemical sample results; U.S. Census Bureau, American Community Survey 5-year estimates (B19013, B01003).

Not a test of your tap. Water Scores are educational estimates from public data, not medical advice.

ScoreYourWater also sells water treatment systems.

How we did this

Water Scores run from 5 to 100, and a higher score means fewer findings in public records. Every row uses the same method, with no manual moves and no paid placement.
Only rows with both a PFAS result (EPA UCMR 5) and a lead 90th percentile are ranked.
The score subtracts points when a utility's UCMR 5 PFOA or PFOS results averaged above 4.0 ppt, the level EPA set in 2024, not yet enforceable.
A ZIP code served by more than one utility is scored on its main utility; the others are named in the row.
Income: ACS 5-year median household income (table B19013), by ZCTA. A ZCTA approximates a ZIP code; it is not the same thing.
Join: each ranked ZIP code is matched to the ZCTA with the same five digits.
Correlation: Spearman rank correlation of income and Water Score across the 166 charted ZIP codes (0.24). Equal values share a rank.
Thresholds: a ZIP code is charted only if its ACS margin of error (90%) is at most 20% of its median income and it has at least 1,000 residents.
The chart compares areas, not households. A ZIP code's income says nothing about any one home.
The Census Bureau tops out household income at $250,001, so the chart stops at $250,000.
Water Scores come from public records of each ZIP code's main utility, so ZIP codes served by the same utility share a score.

Read the full methodology

Sources:

ScoreYourWater also sells water treatment systems.

Download the list (CSV)

Questions people ask

Is Florida tap water safe?

Here is what the public records show for Florida's water utilities: 286 ranked entries have Water Scores from 49 to 100; 5 are not ranked for lack of public data. Scores use public records from 2015 to 2026. That isn't a clean bill of health or a health finding. EPA's national files don't hold sample results for most regulated contaminants. For health questions, ask your utility or your doctor.

Utilities: see something wrong? Send a correction

Data as of October 24, 2026. Rankings are updated monthly. Corrections are noted in each monthly update.

More rankings

Income and Water Scores in Florida ZIP codes

Median household income and Water Score for 166 Florida ZIP codes, side by side. Correlation, not cause.

Across 166 Florida ZIP codes, the rank correlation between median household income and Water Score is 0.24. Correlation, not cause.

A rank correlation runs from -1 to 1. Zero means no relationship, and 1 means the two move together in the same order.

Median household income and Water Score, one dot per ZIP code

ACS 5-year 2020–2024, median household income (ZCTA, approximates ZIP).

Each dot is one ranked ZIP code. The short line in each income band marks that band's median Water Score. Correlation, not cause.

Correlation, not cause. The chart compares areas, not households. A ZIP code's income says nothing about any one home.

Median Water Score by income band

Median Water Score by income band
Income band	ZIP codes	Median Water Score	Lowest to highest
Under $50k	10	50	49 – 82
$50k to $75k	63	82	50 – 100
$75k to $100k	53	82	50 – 100
$100k to $150k	35	90	50 – 100
$150k or more	5	76	50 – 100

Thresholds: a ZIP code is charted only if its ACS margin of error (90%) is at most 20% of its median income and it has at least 1,000 residents.

How we did this

Water Scores run from 5 to 100, and a higher score means fewer findings in public records. Every row uses the same method, with no manual moves and no paid placement.

Only rows with both a PFAS result (EPA UCMR 5) and a lead 90th percentile are ranked.

The score subtracts points when a utility's UCMR 5 PFOA or PFOS results averaged above 4.0 ppt, the level EPA set in 2024, not yet enforceable.

A ZIP code served by more than one utility is scored on its main utility; the others are named in the row.

Income: ACS 5-year median household income (table B19013), by ZCTA. A ZCTA approximates a ZIP code; it is not the same thing.

Join: each ranked ZIP code is matched to the ZCTA with the same five digits.

Correlation: Spearman rank correlation of income and Water Score across the 166 charted ZIP codes (0.24). Equal values share a rank.

Thresholds: a ZIP code is charted only if its ACS margin of error (90%) is at most 20% of its median income and it has at least 1,000 residents.

The chart compares areas, not households. A ZIP code's income says nothing about any one home.

The Census Bureau tops out household income at $250,001, so the chart stops at $250,000.

Water Scores come from public records of each ZIP code's main utility, so ZIP codes served by the same utility share a score.

Sources:

ScoreYourWater also sells water treatment systems.

Questions people ask