For many children and adults alike, pool time is the highlight of the summer.Federal rules scheduled to take effect next month are supposed to increase pool usability for people with disabilities.Changes to the Americans with Disabilities Act in 2010 say public pools — including those at hotels, recreation centers and public parks — must be upgraded to provide accessibility for disabled swimmers. The law doesn’t affect private clubs or pools owned by neighborhood associations that aren’t open to the public.For most of those affected pools, the upgrades required are mechanical lifts that help people with disabilities get into the water.The initial deadline for the ADA regulations was March 16, but confusion over the details and pool owners’ insistence for more time caused the Justice Department to give them until May 21.Some are now scrambling to meet the deadline.For swimmers with disabilities the changes are overdue.Gainesville resident Justin Pressley, president of Access to a Better Tomorrow, is quadriplegic.In the past, Pressley said, going on vacation with family has sometimes been frustrating with few hotels offering pool accessibility.“Over the years, I’ve found that hardly any have a lift,” he said. “I live an active lifestyle, and when I go on vacations, I like to use the same amenities as my family.”But it’s not just hotel pools that Pressley wants to access.