Best use for travel intelligence
For travel decisions, river-water data helps explain river condition, urban river stress, and seasonal context, but it should never be mistaken for a finished tap-water or swim-safety claim.
Data cluster
Thailand River Water Quality.
PCD WQI, automatic stations, Thaiwater observations, and river-condition context for Thailand surface-water monitoring.
What this changes for travelers
- PCD WQI: Longer-view river condition and waterbody quality context.
- Automatic stations: Recent pH, dissolved oxygen, conductivity, temperature, and similar river observations.
- Thaiwater: Multi-agency station access that makes river pages more current and more geographically flexible.
- Urban overlays: Useful when a river-quality page intersects Bangkok or heavy urban pressure.
Best sources to start with
- Best official river source: Pollution Control Department water quality and WQI publications for national surface-water condition.
- Best recent-observation source: PCD automatic water quality stations and Thaiwater WaterQuality for parameter-level timestamps such as pH, DO, conductivity, and temperature.
- Best urban-river supplement: Bangkok canal and Chao Phraya datasets when river context passes through Bangkok and salinity matters.
- Best developer starting point: Store recent station telemetry and slower WQI products separately, with explicit period and method fields.
3 of 7 sources look official or agency-backed.
2 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.
Use PCD WQI and automatic stations plus Thaiwater observations together, but store realtime station values separately from slower WQI publications.
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.
Water and hydrology
BMA 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 hydrologyMRC Mekong water quality
Best 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 hydrologyMWA raw-water salinity
Best 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 hydrologyPCD automatic water quality stations
Representative 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 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 hydrologyPollution Control Department water quality
Primary 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 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