Best use for travel intelligence
For travel decisions, beach-water pages are strongest when they admit the limits: coastal sampling, local advisories, and satellite proxies help, but same-day bacteria truth is usually sparse.
Data cluster
Thailand Beach Water Quality.
Beach and swim-safety context using marine sampling, coastal advisories, and satellite proxies without confusing them for the same signal.
What this changes for travelers
- PCD / DMCR sampling: Official coastal condition context for beach and bay pages.
- GISTDA / Copernicus: Bloom, turbidity, and sediment proxies that can add coastal caution.
- Advisory gap handling: Helps the page admit uncertainty when same-day microbiological data is missing.
Best sources to start with
- Best official coastal source: PCD marine water quality and MWQI summaries for coastal sampling-round status.
- Best coastal backup: DMCR monitoring and publications for coastal and marine explanatory context.
- Best proxy layer: GISTDA ocean services and Copernicus Marine ocean-colour products for bloom, turbidity, and suspended-matter signals.
- Best developer starting point: Keep bacteria-style safety claims separate from chlorophyll and turbidity proxies, and store local advisory links whenever they exist.
3 of 8 sources look official or agency-backed.
3 sources expose API, feed, CKAN/DataStore, JSON, XML, or similar machine-readable access.
4 sources have live, hourly, event-driven, warning, or frequent update language.
Keep marine field sampling and satellite proxy layers separate, and avoid implying chlorophyll or turbidity alone can certify swim safety.
Last checked and source confidence
Last checked: 2026-05-11.
Source confidence: This cluster is strongest when several sources describe the same traveler problem from different angles: official context, machine-readable feeds, and slower fallback documentation.
Geospatial and satellite
Copernicus Marine ocean color
Global and coastal ocean-colour products useful for turbidity, suspended matter, and chlorophyll proxies around Thailand. Satellite proxies support water-quality interpretation but do not prove microbiological safety.
Product documentation and data portal for high-resolution ocean-colour products such as chlorophyll, turbidity, and suspended matter Geospatial and satelliteGISTDA ocean color
Satellite proxy layer for chlorophyll-a, sea-surface temperature, and marine-condition monitoring. Useful for bloom, sediment, and coastal-condition context, but not a substitute for bacteria sampling.
Marine GI portal, daily service pages, maps, and satellite-derived marine analysis products Labour, health, and educationDepartment of Health drinking water standards
Best public standards reference for potable-water parameter thresholds such as pH, turbidity, TDS, chloride, nitrate, coliform, and metals. It is a standards layer, not a live monitoring feed.
Public laboratory criteria and standard tables for drinking-water quality Water and hydrologyBMA canal water quality
Bangkok canal and Chao Phraya urban water-quality layer for WQI, BOD, dissolved oxygen, ammonia, and station context. It is useful for city trend pages but not a universal realtime swim-safety feed.
Bangkok open-data dataset with WQI records and related Chao Phraya/canal monitoring context Water and hydrologyDMCR marine water quality
Department of Marine and Coastal Resources publication layer for coastal and marine water-quality monitoring and explanatory context. Useful as a coastal-research and monitoring complement to PCD, not as a national realtime API.
DMCR public knowledge-base publication and monitoring context for marine water-quality status Water and hydrologyMWA online tap-water quality
Bangkok-metropolitan tap-water monitoring with residual chlorine, turbidity, conductivity, pH, chloride, and salinity across online stations. Strong for distribution quality within the MWA service area, not national tap-water coverage.
Public online tap-water monitoring dashboard and related MWA open-data surfaces Water and hydrologyPCD marine water quality
Primary official marine/coastal quality layer for Thailand MWQI and sampling-round context. Good for coastal status and pollution hotspots, not for same-day beach bacteria guarantees.
PCD marine/coastal water-quality pages, MWQI summaries, and linked statistics/publications Water and hydrologyThaiwater WaterQuality API
Best public multi-agency water-observation spine for latest station snapshots, timestamps, basin filters, and parameter values such as pH, dissolved oxygen, conductivity, turbidity, temperature, and salinity. Keep it separate from WQI batch publications.
Thaiwater water-quality page and related multi-agency observation services where station queries are exposed