Take a boat along Bangkok's famous Chao Phraya River and it doesn't take an expert to realize that it is seriously polluted with sewage and practically biologically dead. As part of a general drive to do something about this problem, a recent study has found that the residents are willing to pay for water quality improvements. The study raises the hope that residents' willingness to pay could make Bangkok's soon-to-be-operational sewage treatment system a financially viable solution to the pollution problem.

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