RedactedNarrative: V1, a PWC was heading north in the ICW with two small children on board. Operator was operating at a very slow speed less than 5ph, in a slow speed zone, barely maintaining steerage of the PWC. Operator stated a wake from a passing boater caused the PWC to turn to port causing all on board the PWC to lean to the port, which then caused the PWC to turn over ejecting all occupants. Operator stated he was unable to turn the jet ski back in the upright position which caused it to partially sink. Another PWC in the area picked up the swimmers and no injuries where reported.