Concentrations of the influent and effluent at the constructed
wetland wastewater treatment system at Koh Phi Phi have been
monitored monthly from December 2006 to December 2008. All
samples were analysed for pH, total suspended solids (TSS), 5-day
biochemical oxygen demand (BOD5), total Kjeldahl nitrogen (TKN),
nitrate nitrogen (NO3-N), total phosphorus (Total-P), oil and grease
and faecal coliform bacteria in accordance with standard methods