Bacteria can grow on the filter and if not changed regularly, the bacteria will enter the water supply. Closely follow the guidelines provided for the filter system's upkeep. Water from a properly located and constructed well should not contain coliform bacteria. If present, other non- bacterial contaminants could also be in your water supply. An annual test for coliform bacteria verifies the bacteriological safety of your water.
Bacteria can enter a well by several different pathways.
Wells should be at least 50 feet away from a possible contamination source. For further information on water testing or suspected contamination in your area, contact your local Health Department or county Cooperative Exten- sion office. Issued in furtherance of the acts of May 8 and June 30, 1914.