How clean is
your water?
Biscayne Bay is a shallow lagoon beside one of the nation’s fastest-growing cities, making it vulnerable to pollution. Miami Waterkeeper monitors local waters so you can make informed decisions about where it’s safe to swim, fish, and paddle.
Water Quality
Monitoring Program
Sites are sampled at least once a week. If a site shows high bacteria levels, it is resampled, and the results are updated promptly. Monitoring complements the Florida Healthy Beaches program and fills gaps, making it easier for the public to access water quality data.
View DataLatest Data Available in Swim Guide
Check current results and site status on the Swim Guide website or through the free Swim Guide app. Sites are color-coded:
Green:
Most recent test met water quality standards
Red:
Most recent test exceeded water quality standards
Special Status:
Temporary caution due to pollution or other safety events
How Water Quality is Measured
Water quality is assessed using EPA standards for enterococci bacteria, the same benchmarks used by the Florida Department of Health for recreational waters.
Miami Waterkeeper tests for enterococci, fecal indicator bacteria (FIB) that are bacteria found in the intestines of humans and other warm-blooded animals. Their presence in water signals possible contamination from sewage or runoff, which could increase risk of illness. High FIB levels indicate that water may not meet recreational standards.
EPA thresholds for recreational waters:
- 0–70 CFU/MPN per 100 mL:
Meets standard for recreation - 70+ CFU/MPN per 100 mL:
Exceeds standard for recreation
Municipal Water Quality Monitoring Reports
We compile and share the findings from our water quality monitoring to support communities and local decision-making. Past reports highlight trends, results, and insights from our partnerships with municipalities across South Florida.
Click a city to view available reports.
City of Fort Lauderdale
2024-2025 Water Quality Report
2023-2024 Water Quality Report
2022-2023 Water Quality Report
2021-2022 Water Quality Report
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City of Miami
2024-2025 Water Quality Report
2023-2024 Water Quality Report
2022-2023 Water Quality Report
2021-2022 Water Quality Report
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North Bay Village
2024-2025 Water Quality Report
2023-2024 Water Quality Report
2022-2023 Water Quality Report
2021-2022 Water Quality Report
2020-2021 Water Quality Report
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Village of Key Biscayne
2024-2025 Water Quality Report
2023-2024 Water Quality Report
2022-2023 Water Quality Report
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Report Pollution
See something concerning? You can help protect our waterways.
If you observe sewage spills, discolored water, strong odors, fish kills, or debris, report it immediately. Community reports help identify pollution more quickly and hold polluters accountable.
Follow us for daily updates
@miamiwaterkeeper