Keep yourself, your children and others healthy when swimming by following these tips to prevent illness:
• Stay out of the water if you have diarrhea.
• Stay out of the water if you have an open wound that isn’t covered by a waterproof bandage.
• Do not swallow water.
• Take children for bathroom breaks every hour.
• Wash hands with soap and water after using the bathroom.
• Keep children who are not toilet-trained out of unchlorinated water
Original source can be found here.