The radius for the secondary protection area should be a minimum of 200 feet and 400 feet or more is preferred. Guidelines for high, moderate, and low risk are shown in Table 3. Check to see that well casing is free of cracks or other leaks from water table to at least 1 foot above the ground surface or highest flood level. Check that the sanitary seal is secure and watertight and is a KDHE-approved type. Make sure the ground slopes away from the well for at least 15 feet in all directions.
Shock chlorinate the well and water system.
Test water and file the results with other records and information about the well. Find and fix the cause of any change in water color, taste, or odor. Shock chlorinate the well. Store chemicals such as fertilizer, pesticides, oil, fuel or paint at least 100 feet down slope. Prevent backflow and back-siphonage by maintaining an air gap above the container you are filling, or by using an adequate backflow prevention device.