Only six beaches nationwide have earned a five-star rating on the Pollution Control Department’s latest beach quality index.
The PCD’s survey of 233 beaches in 18 provinces, carried out last year, found many beaches have been damaged by pollution and other human activity.
http://www.bangkokpost.com/news/local/188989/sea-of-sewage-strips-thai-beaches-of-five-star-rating
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