<p><em>Water pollution often occurs due to the disposal of household waste (solid waste and liquid waste) as well as industrial </em><br /><em>waste, small industry and non-organic waste. This waste will be disposed of through channels which then flow into rivers. The</em><br /><em>purpose of this research is to make a device that can determine the condition of river water, which is polluted or not from a</em><br /><em>long distance. The method used in this study is by taking samples from river water that can represent polluted and unpolluted,</em><br /><em>then data is taken from these samples which are then processed so that their condition can be known. The conditions that have</em><br /><em>been obtained are then displayed via the web.</em></p>