Krabi's mainland, islands and beaches can face different conditions. Start with the exact place and date of the result.
A coastal sample describes seawater at a sampling point. It does not certify another beach. A tap test describes one building or supply. It does not describe the sea.
Read the indicator, reporting limit and sample date. Missing details are a reason to keep the result as background only.
Rain, runoff, boat activity and local works can change conditions. For a current swimming decision, follow a notice that names the beach or coast. For drinking, ask the accommodation or water provider about treatment.
Check Pollution Control Department water-quality information ↗
A dated result supports a dated observation. It cannot promise today's water or a different island. Keep the source beside the claim whenever you share it.