From CDC:
Healthy and Safe Swimming Week

Visit the
to download Healthy and Safe Swimming Week buttons.Formerly known as Recreational Water Illness and Injury (RWII) Prevention Week, the week before Memorial Day has been designated National Healthy and Safe Swimming Week. Healthy and Safe Swimming Week 2016 will take place May 23-29, 2016, marking the 12th anniversary of this observance.
Each year, Healthy and Safe Swimming Week focuses on simple steps swimmers and pool operators can take to help ensure a healthy and safe swimming experience for everyone. It focuses on the role of swimmers, aquatics and beach staff, residential pool owners, and public health officials in preventing drowning, pool chemical injuries, and outbreaks of illnesses. It highlights swimmer hygiene and the need for swimmers to take an active role in helping to protect themselves and prevent the spread of germs.