Raw well water does not have any of the chemicals that the city adds to kill bacteria. This is the reason we added an ultravoilet light to this home. As the water passed through it will kill any bacteria before it comes into the house. We added a PureChoice Reverse Osmosis water filter under the sink with and added alkaline filter for drinking water. Christmas is right around the corner. Get the gift of GREAT water for Christmas. Call us today for your FREE water analysis.