Explore the guides
Bangkok Tap Water Quality
Learn what tap-water tests in Bangkok cover. A result at the treatment plant does not describe every pipe or storage tank.
Bangkok tap water / salinity watch urban-water guideBangkok Canal Water Quality
Explore Bangkok's canals and the sources used to track pollution. A canal reading is not a test of whether it is safe to swim.
Bangkok canals / urban context river guideChao Phraya Water Quality
Read about the Chao Phraya River, saltwater intrusion, and the difference between recent readings and longer-term trends.
river quality / salinity alerts beach-water guideThailand Beach Water Quality
Understand beach-water tests. Cloudy water and satellite images cannot replace tests for harmful bacteria.
beach caution / swim planning destination water guidePhuket Water Quality
Explore Phuket's coastal water, supply, and wastewater. Conditions can differ from one beach to the next.
island beaches / coastal caution destination water guideSamui Water Quality
Read about water around Samui. Separate coastal conditions from the water used in homes and hotels.
island beaches / resort planning destination water guideKrabi Water Quality
Explore water around Krabi's mainland and islands. Local tests matter more than one score for the whole province.
Andaman trips / coastal caution river guideChiang Mai River Water Quality
Follow Chiang Mai's rivers and the sources that monitor them. A river reading answers a different question from a tap-water test.
northern rivers / river context transboundary-water guideMekong Water Quality
Understand Mekong monitoring and reports of specific incidents. Check the place and date covered by each result.
Mekong context / heavy-metal events groundwater guideGroundwater in Thailand
Learn what is known about a groundwater well. A point on a map does not show whether its water has been tested or treated.
well lookup / groundwater context