Beach-water questions need the right kind of evidence. Pollution Control Department marine sampling and MWQI reports describe measured coastal conditions; satellite ocean-colour products show signals such as turbidity or chlorophyll. A coloured satellite pixel is not a microbiological swim test.
PCD and Department of Marine and Coastal Resources publications provide sampling-round, station and coastal-status context. Check the sample date and location: an older regional result cannot establish today's condition at every beach.
Copernicus ocean-colour products can indicate suspended matter, turbidity and chlorophyll patterns over broader areas. Cloud, resolution and model interpretation matter, and the products do not directly test bacteria or local discharge.
Combine the latest official sampling with beach notices, weather, runoff and visible local conditions. Treat advisories or closures as controlling; this directory does not issue a live safe-to-swim verdict.