No person shall enter a swimming pool or a natural or artificial body
of water for the purpose or activity of swimming, including wading or otherwise
placing the body of a person in contact with the water, without having first
received the permission of the owner of the swimming pool or of the body of
water and without having such owner personally present on the property at
all times while the person is in the water, provided that if the person has
first received permission of the owner of such swimming pool or body of water
who is not personally present, said person shall be deemed to have complied
with the requirements of this chapter upon presenting written evidence of
such owner's permission to an officer of the law, which written authorization
shall specify the date and time when the person is permitted to engage in
such swimming during the owner's absence from the property as subscribed
by the owner of record of the property.