Water Filters

Hi,
   I am staying in Hulhumale/Male since a month. I have observed that people here rely heavily on bottled water for drinking and cooking purposes. I came to know that the tap water is not that much pure for consumption. But then, why don't people use water filters at home? Won't it serve the purpose?

cost issue my friend. maldives itself not a manufacturer of anything related to water purification may be that`s why

There is hardly anything which is manufactured in maldives.. N more over buying bottles isnt also cheap..