Water and hydrology

Provincial Waterworks water quality.

Provincial 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 Public Water Quality Map and Water Monitor Station dashboards linked from the PWA site map Free public dashboard access; bulk API not clearly verified Operational / daily depending station and branch Open source
Runtime role

Catalog only

Access class

Public

Access type

Public Water Quality Map and Water Monitor Station dashboards linked from the PWA site map

Free status

Free public dashboard access; bulk API not clearly verified

Cadence

Operational / daily depending station and branch

Last verified

2026-05-11

Access class note

Public web, file, catalog, or documented endpoint access with no paid gate implied in the source profile.

Used in layers

page reference only

Useful fields

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

Reliability rating

Medium: useful public signal, but extraction can depend on dashboard or agency publishing patterns.

Runtime truth

Runtime role

Catalog only

Production ready

Not yet

Entity scope

No runtime entity scope yet.

Observation scope

No live observation ingestion yet.

Decision scope

Not wired into active decisions yet.

Runtime note

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.

Developer reference

Best endpoint

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.

Recommended refresh

Refresh every 15-60 minutes, with caching and backoff when the upstream fails.

Travel scoring role

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.

Comparable / backup source

PCD, Thaiwater, MWA, PWA, DGR, BMA, DMCR, GISTDA, Copernicus Marine, MRC, DIW, Department of Health, and FDA.

Example request

# Source landing or publication page; inspect linked documents or resources before automation.
curl -L "http://dmama.pwa.co.th/rtumonitor/maps_water_qlt.php"

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.
  • Dashboard markup or public-page layout can change without notice.

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.