Our well sits on an iron bed and I was told to get the rust blown out as it's a country home which has been barely used during the past 5 years. It failed a water test last year due to E-coli and coliform, 6 gals of bleach were added and ran the water after. Have not retested the water as yet as the house is closed for the winter. Would a water softener help or should I get the well cleaned?