I made a mistake after Ike came through. Our water pressure didn't go down so I assumed the water was safe to use - hadn't been compromised. Every day the local newspaper had a paper delivered to everyone to tell us the state of utilities, the water and power. The water remained pure, but afterward I thought about it and if the water had become polluted between the time I got one newspaper and the next day when the next paper came out, I would have been using polluted water during that time.
I won't make that mistake next time - I will assume the water is polluted and use the Ozarka water. However, even before the Ozarka water, I would fill up my WaterBob that goes inside a tub, before the hurricane comes through and it holds 100 gallons. I would use that first, then go to the Ozarka.
You see, Houston water was polluted immediately after Ike came through. Just because the water in my town north of Houston, about 40 miles, didn't lose pressure, didn't mean it wasn't polluted. Water in Cleveland, about 15 miles northeast of me, which is that much farther away from Houston, had polluted water for weeks and water had to be trucked in.
There is no way to tell what a hurricane is going to do in your area. I go back to if you depend on people or machines to provide you life sustaining necessities, be prepared to provide them for yourself as people and machines can fail.