Thai Gulf Sea & River Water Quality
Although the Gulf of Thailand is tropical, the area can be subject to many months of very low rainfall resulting in a semi arid environment, particularly on the islands which exhibit their own unique microclimates. Water for domestic use is provided from a number of sources – rivers and reservoirs, shallow and deep wells abstracting from the water table and some limited seawater desalination, As both the resident population and also the number of tourist nubers have increased over the years water is increasingly in short supply and as a consequence water availability and quality is of critical importance in the Gulf area. Equally, due to a lack of infrastructure, or maintenance issues in certain areas, seawater quality is of considerable importance from a tourist perspective.
Water conservation is of increasing importance, today average domestic water usage for an urban dweller often exceeds 200 litres per person per day, in contrast with Thailands older village standard usage of less than 50 litres per person per day. With a little thought about how exactly we behave can effect consumption considerably – minimize shower time, turn off taps when not actually needed, use low flush toilets, minimize garden use etc.
Equally rainwater capture, either in above ground holding tanks, under ground tanks or man made ponds is of importance for resort and house owners. please Contact Us should you be considering water capture at your site and wish to discuss options.
EcoThailand has access to both seawater and river water laboratory analyses for contaminants at several hundreds of sites across the Thai Gulf and spanning many years, such analyses are carried out several times a year and test for a wide range of pollutants including bacterial contamination, dissolved oxygen, metals etc and to International and Thai Government Testing Procedures.
Both sea water and river water quality maps of Koh Phangan, Koh Samui and sea water for Koh Tao are available, and some limited data available for Ang Thong Marine Park.
Currently these are available as static maps, we are currently in the process of transferring these into Google Maps format – coming soon!
Water samples are taken from sites around the islands and analysed according to the Thai government Marine Water Testing procedures for a wide range of possible chemical and biological contaminants (see Marine Water Testing Document for full details).
If the water sample passes all tests, and are within the prescribed limits, it is given a green pin.
If the water sample fails one or more tests, but by no more than 50% of the limit, it is given a yellow pin.
If the water sample fails one or more of the tests, and is more than 50% over the specific limit, it is given a red pin.
To date, all samples that have failed to be within government limits have failed primarily on the basis of coliform bacterial count. All test data is for the period 2016-2018, we are currently processing 2020 data. Thai Water Quality Testing Standards documentation at Page End.
Sea & River Sampling
Sea and River Water Quality Maps
Water Quality Ang Thong National Marine Park
Around the Ang Thong islands a total of 8 sampling points were taken …with the exception of one, which had a slightly raised nitrate level, all passed the testing protocols.
Should you require more detailed analytical data on the specific sites and tests, if you want to know the precise analysis position, or if you are interested in testing at a specific site, at your own resort or business , please Contact Us to discuss further.
If unnatural events, pollution or Marine animal deaths are observed on the beaches of Koh Samui, Koh Phangan or Koh Tao, or indeed any other region, they can be reported to the Marine and Coastal Department (DMCR) by phone (0775102134) or via their website Central Gulf of Thailand DMCR.
Thai Water Quality Testing Standards:MrnQuaStd-1