Our club team practices at a city facility and they are open for lap swim only. They started out with one per lane, one hour limit on practices, use your own gear and it comes in with you and leaves with you (they used to store it at the pool), bathrooms only for emergencies, no water fountains are to be used, and no one inside the facility except for coaches, swimmers and facility staff. They also built in 15 minute windows so each group would enter and exit without running into groups who practice before or after them. Our club swimmers and coaches are also using a different entrance than the public lap swimmers. All were encouraged to keep their 6 ft distance. Coaches wear masks. After Memorial Day they are moving to 2 per lane and increasing practice time.
All neighborhood pools opened in my area over the weekend. These are private membership pools and all have different rules in place.