Besides , “The Prime Minister has ordered The measures in the sewage system. Both houses and industries should require to have grease trap or a home user on a low income. The measures for industry provide wastewater treatment before it will be released into rivers. Bangkok, which has measures in place to resolve the problem of waste water recirculation system include: water in the canal by continuing to circulate, small community wastewater treatment systems which can treat of sewage in 12 place 24800 m3/day and large wastewater treatment system , such as construction projects including a large waste water treatment system." ( Keawkamnoet as citation Chanacha ,2015,p.1).