I am not sure where to post this so I will start here. I just bought a home in December of 2011 and this home came with a pool that has sat for a few years. I needed to have the liner replaced and that's what is happening today. I had a few set backs getting this liner in and have actually had it in the plans for about a month now due to a party I am having for mys on this weekend. This is my problem. The pool guy installing the liner today said that I can have the pool party for my son this Saturday at noon. He will be finishing it up today and should be able to start putting water into it around 5 or 6 tonight. He stated that we will be cutting it close (within a few hours of the party) but it will be open. I am using city water to fill it all night and through tomorrow and I am estimating it should be full some time early tomorrow night or late tomorrow night. The only chemicals I have right now are Shock and algaecide. Using only city water to fill it up, will it be safe to swim in come noon Saturday?