A beach sample, a tap test and a basin report answer different questions. Read the place and date before using any result to make a decision.
Coastal monitoring can describe seawater conditions at a sampling point. It does not prove that every beach is safe today. A tap result concerns one supply or building. It does not describe the sea.
Look for the sample location, date, measured indicator and reporting limit. If any of those are missing, treat the result as context rather than a current safety clearance.
Weather, runoff, damaged pipes and local works can change conditions quickly. For swimming, follow a current notice that names the beach or coastline. For drinking, ask the accommodation or water provider about its supply and treatment rather than relying on a general coastal chart.
Check Pollution Control Department water-quality information ↗
A historical test can show what was measured at that time. It cannot certify today's water, a different beach, or a different tap. Keep the source date beside the result and recheck before acting.