Catalog only
Water and hydrology
Pollution 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.
Public
PCD water-quality pages, publications, and linked national datasets for surface-water monitoring and WQI
Free public web and catalog access
Monthly / quarterly / annual depending dataset
2026-05-11
Public web, file, catalog, or documented endpoint access with no paid gate implied in the source profile.
page reference only
waterbody, station, timestamp, parameter code, value, unit, method, quality flag, WQI/MWQI, salinity, pH, turbidity, DO, BOD, conductivity, residual chlorine, bacteria, heavy metals, source threshold
High for official context; validate endpoint availability before automation.
Runtime truth
Catalog only
Not yet
No runtime entity scope yet.
No live observation ingestion yet.
Not wired into active decisions yet.
Profiled in the atlas and public pages, but not yet connected to live graph computation.
How this helps travel recommendations
Turns water data into source-backed decisions about river condition, Bangkok tap-water confidence, raw-water salinity intrusion, beach caution, groundwater caveats, wastewater context, and whether a warning is really about tap, river, marine, or industrial water.
Endpoint and API notes
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.
Open the source endpoint or documentation. Return to the Thailand data atlas.
Developer reference
Use PCD and Thaiwater for river and station observations, MWA/PWA for tap or raw-water dashboards, DGR for wells, PCD/DMCR for marine and coastal sampling, and standards pages separately for interpretation rather than observation.
Check weekly for change detection, but treat the official publication period as the real cadence.
Turns water data into source-backed decisions about river condition, Bangkok tap-water confidence, raw-water salinity intrusion, beach caution, groundwater caveats, wastewater context, and whether a warning is really about tap, river, marine, or industrial water.
PCD, Thaiwater, MWA, PWA, DGR, BMA, DMCR, GISTDA, Copernicus Marine, MRC, DIW, Department of Health, and FDA.
Example request
# Source landing/download page; inspect linked resources before automation.
curl -L "https://www.pcd.go.th/water-quality/"Failure modes
- There is no single all-water-quality Thailand API.
- WQI and MWQI are not realtime safe-today feeds.
- Tap water, raw water, groundwater, river water, marine water, wastewater, and industrial effluent use different thresholds and cadences.
- Satellite proxies such as chlorophyll or turbidity do not prove microbiological swim safety.
- Public industrial-effluent visibility is limited and often role-gated.
- The same station can appear under different agency names, IDs, and coordinate precision.
Last checked and source confidence
Last checked: 2026-05-11.
Source confidence: Treat this profile as strongest for the exact role named above. It is weaker when the source is stretched into live availability, legal proof, or traveler-fit decisions it does not directly prove.