I'm glad you got the advice you needed, another thing you may look at is purchasing a of a water cooler and some extra bottles. You can get one for $99 at home depo, Lowes, etc.. And the refills you can get at Walmart for 25 cents a gallon($1.25 per jug Carbon filtered,Reverse Osmosis and ultra violet light for virus) . We have 25 gallons on hand (5 jugs)strictly from this and rotate 7 to 8 gallons a week plus we have food grade 55 gallon drums with water and another for fuel for the generator. If we get into a Katrina type disaster and the water does get chemicals then we would have to go to the ocean and try to draw salt water that is in deeper water to stay away from oil and gas which floats on the surface and hope no other chemicals go deeper. This would be as a last resort when all of our storage supply and swimming pools in the area are depleted.