For directions on how to shock chlorinate a water supply, see NebGuide G94-1255, Shock Chlorination of Domestic Water Supplies . After shock chlorination, submit another water sample for testing. The water should test negative before use. More than one shock chlorination treatment may be needed to effectively treat the entire water supply. If the source of bacterial contamination cannot be identified and eliminated, continuous disinfection of the water supply may be necessary.
Chlorination is the most common disinfection method.
For information on continuous disinfection options and the advantages and disadvantages of each, contact your University of Nebraska Cooperative Extension Office. Summary Bacterial contamination of drinking water can be a problem. A water test is the only way to evaluate whether bacteria is present in a water supply. Proper well location and construction are keys to avoiding bacterial contamination of drinking water. If contamination is present, attempt to identify and eliminate the source of the contamination.