Data cluster
Official river, tap-water, groundwater, marine, wastewater, industrial-effluent, and standards layers for Thailand water-quality intelligence.
For travel decisions, water-quality data is strongest when it separates rivers, tap water, raw-water salinity, groundwater, beaches, marine proxies, wastewater, industrial monitoring, and standards instead of flattening them into one 'water safe' claim.
7 of 17 sources look official or agency-backed.
7 sources expose API, feed, CKAN/DataStore, JSON, XML, or similar machine-readable access.
7 sources have live, hourly, event-driven, warning, or frequent update language.
Keep waterbody type, station observations, WQI or MWQI, tap-water dashboards, standards, and industrial or wastewater context in separate tables so the page can say exactly what kind of water is being discussed.
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.
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 satelliteSatellite 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 educationBest 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 Labour, health, and educationOfficial bottled-water law and standards layer for sealed drinking-water products. Use it for product-standard and compliance context, not for municipal tap-water or river quality.
Official food-law page for drinking water in sealed containers and related Ministry of Public Health notices Water and hydrologyBangkok 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 hydrologyBest public groundwater-well spine for consumption and agriculture wells, with related DGR quality datasets used separately for slower lab results. Historical quality does not equal present drinking safety.
Smart Pasutara well portal and Open API endpoint for nationwide groundwater-well search Water and hydrologyFactory monitoring layer for parameters such as BOD, COD, flow, and related compliance signals in industrial contexts. Treat it as regulated operational infrastructure, not open national water-quality data.
Online pollution monitoring system surface for industrial air and water pollution monitoring Water and hydrologyDepartment 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 hydrologyBest transboundary Mekong water-quality context for monthly monitoring, nutrients, solids, oxygen, and incident follow-up. Keep basin-scale monitoring separate from local Thai drinking-water claims.
Official monitoring programme pages, reports, and linked data or download surfaces Water and hydrologyBangkok-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 hydrologyBest public MWA layer for Chao Phraya raw-water salinity intrusion and intake-quality monitoring. Raw-water intake quality is not the same thing as finished tap-water quality.
Public raw-water remote monitoring dashboard for salinity, conductivity, pH, dissolved oxygen, TDS, and related intake surveillance Water and hydrologyRepresentative automatic-station layer for rivers such as Tha Chin, with parameters like temperature, pH, dissolved oxygen, and conductivity. Treat station coverage as partial, not nationwide realtime truth.
Government Data Catalog dataset page with automatic-station resources and linked PCD catalog entry Water and hydrologyPublic-facing slice of PCD wastewater and effluent-control operations, useful for facility guidance, inspection context, and wastewater-treatment standards. It does not expose a comprehensive public realtime industrial effluent feed.
Public download center and guidance for pollution inspection and wastewater-treatment control workflows Water and hydrologyPrimary 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 hydrologyPrimary official source for Thailand surface-water quality, WQI, and public water-quality service guidance. Use it for national river and lake status, not as a universal realtime API.
PCD water-quality pages, publications, and linked national datasets for surface-water monitoring and WQI Water and hydrologyProvincial tap-water and raw-water monitoring layer outside the MWA service area. Treat it as public dashboard truth unless a documented bulk API is granted.
Public Water Quality Map and Water Monitor Station dashboards linked from the PWA site map Water and hydrologyBest 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