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Review government records associated with Key Biscayne, Florida.
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Check your water bill for your utility name and confirm the reporting year. See EPA’s guide to finding your annual water quality report.
Public water-system records for Key Biscayne, FL from EPA SDWIS.
Mdwasa - Main System
Active monitoring or reporting issue detected in EPA SDWIS.
Reviewed: active/open records as of Q1 2026
City-area ZIP code · Serves 2,377,460 people
Mdwasa/Rex Utilities
Active monitoring or reporting issue detected in EPA SDWIS.
Reviewed: active/open records as of Q1 2026
City-area ZIP code · Serves 45,200 people
Miami Beach, City of
Active monitoring or reporting issue detected in EPA SDWIS.
Reviewed: active/open records as of Q1 2026
Purchased or imported water record · Serves 100,000 people
Data from EPA SDWIS
PFAS screening separates EPA UCMR5 drinking-water monitoring from nearby DoD PFAS investigation-site records; EPA samples shown are from Dec 2023 to Aug 2025.
Drinking Water PFAS Monitoring
EPA UCMR5 samples public water systems. These results are separate from nearby PFAS cleanup or investigation-site records.
30 PFAS sample results above EPA limits
Sample period: Dec 2023 to Aug 2025
UCMR5 results are sampled by public water system, not every household. Confirm your water provider before treating these as tap-water results for a specific address.
| Chemical | Concentration (µg/L) | EPA Limit (µg/L) | Sample date | Over Limit |
|---|---|---|---|---|
| PFOS | 0.0330 | 0.0040 | 2023-12-20 | Yes |
| PFOS | 0.0299 | 0.0040 | 2024-05-15 | Yes |
| PFOS | 0.0160 | 0.0040 | 2024-05-15 | Yes |
| PFOA | 0.0140 | 0.0040 | 2023-12-20 | Yes |
| PFOS | 0.0120 | 0.0040 | 2023-12-20 | Yes |
| PFOS | 0.0120 | 0.0040 | 2023-12-20 | Yes |
| PFOS | 0.0110 | 0.0040 | 2024-05-15 | Yes |
| PFOA | 0.0107 | 0.0040 | 2024-05-15 | Yes |
| PFOA | 0.0049 | 0.0040 | 2023-12-20 | Yes |
| PFOA | 0.0048 | 0.0040 | 2024-05-15 | Yes |
| PFOA | 0.0044 | 0.0040 | 2023-12-20 | Yes |
| PFOA | 0.0044 | 0.0040 | 2024-05-15 | Yes |
| PFOS | 0.0374 | 0.0040 | 2025-08-12 | Yes |
| PFOS | 0.0351 | 0.0040 | 2025-08-12 | Yes |
| PFOS | 0.0330 | 0.0040 | 2025-08-12 | Yes |
| PFOS | 0.0320 | 0.0040 | 2025-02-11 | Yes |
| PFOS | 0.0310 | 0.0040 | 2025-02-11 | Yes |
| PFOS | 0.0300 | 0.0040 | 2025-02-11 | Yes |
| PFOS | 0.0299 | 0.0040 | 2025-08-12 | Yes |
| PFOS | 0.0270 | 0.0040 | 2025-02-11 | Yes |
| PFOS | 0.0200 | 0.0040 | 2025-02-11 | Yes |
| PFOS | 0.0196 | 0.0040 | 2025-08-12 | Yes |
| PFOA | 0.0106 | 0.0040 | 2025-08-12 | Yes |
| PFOA | 0.0096 | 0.0040 | 2025-02-11 | Yes |
| PFOA | 0.0084 | 0.0040 | 2025-08-12 | Yes |
| PFOA | 0.0083 | 0.0040 | 2025-08-12 | Yes |
| PFOA | 0.0077 | 0.0040 | 2025-02-11 | Yes |
| PFOA | 0.0074 | 0.0040 | 2025-02-11 | Yes |
| PFOS | 0.0240 | 0.0040 | 2024-02-05 | Yes |
| PFOA | 0.0078 | 0.0040 | 2024-02-05 | Yes |
PFAS detections below EPA limits.
Nearby PFAS Investigation Sites
DoD records are nearby site investigations, not Key Biscayne drinking-water detections. Record names come from the source database and can be broad.
No DoD PFAS investigation records shown for this report.
EPA ATTAINS records identify assessed water bodies that do not meet water-quality standards for designated uses.
South Biscayne Bay
Reported: Nov 2026
Health-relevant causes: Mercury, Metals (other Than Mercury), Pathogens
Affected uses: Ecological, Fishconsumption, Recreation
Data from EPA ATTAINS
To investigate water contamination, check the sampling locations, dates and results below. For tap water records, see Drinking water quality above.
Reviewed: source records as of 2026
Review historical EPA air pollution records, including monitoring and facility emissions where available. For current conditions, check local air quality on AirNow.
Miami-Dade County
Assessment year: 2020
According to EPA, a cancer risk of 20-in-1-million means that for every 1 million people continuously exposed to these air toxics over a 70-year lifetime, an estimated 20 may develop cancer from that exposure. This is in addition to cancer risk from all other causes.
Top modeled source groups
Data from EPA AirToxScreen
No EPA nonattainment designation records shown for this report.
EPA annual monitor summaries describe past measurements. For current air quality, see AirNow.
Miami Fire Station
Annual mean: 24.5 Micrograms/cubic meter (25 C)
Observation year: 2025
Annual mean: 8.0 Micrograms/cubic meter (LC)
Observation year: 2025
Palm Springs Fire Station — Palm Springs North, Florida
Annual mean: 6.8 Micrograms/cubic meter (LC)
Observation year: 2025
Data from EPA AQS
Reviewed: source query run Nov 2026
Reviewed: source query run Nov 2026
State environmental agencies maintain cleanup site databases that include state Superfund, voluntary cleanup, and brownfield remediation programs. These programs track additional sites beyond those on the federal NPL.
3 sites with active cleanup or investigation
580 CRANDON BLVD, KEY BISCAYNE
0.1 miles away
Reported: Nov 2026
38 CRANDON BLVD, KEY BISCAYNE
0.6 miles away
Reported: Nov 2026
200 OCEAN LANE DR, KEY BISCAYNE
0.7 miles away
Reported: Nov 2026
Data from EPA ECHO
Release reports
Reported: Dec 2021
Reported: Dec 2021
Reported: Dec 2021
Data from EPA UST Finder
Formerly Used Defense Sites are properties previously owned by, leased to, or otherwise possessed by the United States and under the jurisdiction of the Secretary of Defense. The FUDS program addresses environmental restoration at these properties.
Open data source: USACE FUDSNo MSHA mine or extraction site records shown for this report.
Miami-Dade County, FL
EPA Radon Zone Map (June 2024 release)
Miami-Dade County is EPA Radon Zone 2 (moderate potential). EPA defines Zone 2 counties as having predicted average indoor screening levels between 2 pCi/L and 4 pCi/L.
Radon levels can vary from home to home, so EPA recommends testing the property to know its indoor level.
FEMA flood zones describe mapped flood hazards. Look up a specific address with FEMA.
Special Flood Hazard Area — 1% annual chance of flooding (100-year floodplain) with base flood elevation.
Results use an earlier stored RMP inventory. Current EPA ECHO location coverage is unverified.
No EPA ECHO RMP facility records with a usable location matched this city report.
Health outcomes from County Health Rankings. Values shown alongside state and national averages.
Miami-Dade County, FloridaPop. 2,673,837
County Health Rankings edition: 2024
Premature Death
Poor or Fair Health
Poor Physical Health Days
Poor Mental Health Days
Adult Smoking
Adult Obesity
Air Pollution - Particulate Matter
Drinking water violation indicator
Diabetes Prevalence
Life Expectancy
| Indicator | County | State | National |
|---|---|---|---|
| Premature Death | 6,148 | 8,299 | 7,972 |
| Poor or Fair Health | 19.7% | 13.3% | 14.2% |
| Poor Physical Health Days | 3.5 | 3.0 | 3.3 |
| Poor Mental Health Days | 4.5 | 4.2 | 4.8 |
| Adult Smoking | 14.9% | 15.5% | 15.0% |
| Adult Obesity | 30.1% | 28.3% | 34.0% |
| Air Pollution - Particulate Matter | 7.7 | 7.8 | 7.3 |
| Drinking water violation indicator | Yes | N/A | N/A |
| Diabetes Prevalence | 13.0% | 9.5% | 9.6% |
| Life Expectancy | 80.2 | 78.5 | 77.6 |
EPA testing found PFAS in water samples from Mdwasa-Main System. Results dated Dec 20, 2023 to May 15, 2024 include 6:2 FTS at 0.0079 to 0.19 micrograms per liter and PFHxA at 0.0056 to 0.058 micrograms per liter.
EPA testing found PFAS in water samples from Mdwasa/Rex Utilities. Results dated Feb 11, 2025 to Aug 12, 2025 include PFOS at 0.0196 to 0.0374 micrograms per liter and PFBS at 0.0074 to 0.017 micrograms per liter.
EPA testing found PFAS in water samples from the City of Miami Beach. Results dated Feb 5, 2024 include 6:2 FTS at 0.089 micrograms per liter and PFHxA at 0.028 micrograms per liter.
Check with the utility that serves your address for its testing results.
EPA drinking water records on this page list 24 violations for Mdwasa-Main System.
EPA drinking water records on this page list 14 violations for Mdwasa/Rex Utilities, including 2 marked active.
EPA drinking water records on this page list 40 violations for the City of Miami Beach, including 3 marked active.
Check your water bill to identify the utility serving your address. Ask that utility about current drinking water advisories.
Nearby EPA monitoring stations provide annual air quality measurements for Key Biscayne.
The monitoring station at Miami Fire Station recorded an annual average of 24.5 Micrograms/cubic meter (25 C) for particles (PM10) in 2025.
The monitoring station at Miami Fire Station recorded an annual average of 8 Micrograms/cubic meter (LC) for fine particles (PM2.5) in 2025.
The monitoring station at Palm Springs Fire Station, Palm Springs North, Florida recorded an annual average of 6.8 Micrograms/cubic meter (LC) for fine particles (PM2.5) in 2025.
Download 2025 EPA annual monitor dataCurrent air quality on AirNow
The radon data for Key Biscayne covers Miami-Dade County. EPA places this area in Zone 2, with a predicted average indoor radon screening level of 2 to 4 picocuries per liter.
No Superfund or brownfield sites were returned for this city report.
The county data for Key Biscayne reports a life expectancy of 80.2 years in Miami-Dade County, Florida.
The figure is from the 2024 edition of County Health Rankings, a University of Wisconsin program that publishes county health statistics.
The county data for Key Biscayne reports 6,148 years of life lost to deaths before age 75 per 100,000 residents in Miami-Dade County, Florida. This measure adds up the years lost to early deaths and adjusts for differences in population age.
The figure is from the 2024 edition of County Health Rankings, a University of Wisconsin program that publishes county health statistics.
The county data for Key Biscayne lists fine-particle pollution (PM2.5) at 7.7 micrograms per cubic meter in Miami-Dade County, Florida.
The figure is from the 2024 edition of County Health Rankings, a University of Wisconsin program that publishes county health statistics.