Rafael Pizarro was rushed to hospital in a critical condition on the evening of June 5 after emergency services were called to a stretch of Rochdale Canal at Boarshaw Clough Way, Middleton.
Police said Rafael died in the early hours of Tuesday June 14th.
There are not believed to be any suspicious circumstances surrounding his death.
And we know that in all things God works for the good of those who love him, who have been called according to his purpose.
In a tribute published by Greater Manchester Police, his family said their faith was a strength to them.
"We are devastated with the loss of Rafael and are lost for words. It is hard to comprehend what has happened over the last week," they said.
"Rafael had a big impact on his family and friends and was much loved and we will truly miss him.
"Out of this tragedy, we are comforted to know that his organ donation will help others in Manchester and across the country.
"We would like to thank the staff at Manchester Children's Hospital for their support and hard work caring for Rafael.
"As a family, we would urge all parents to talk to their children around water safety so no other family have to go through what we are dealing with. We would ask for privacy at this time to grieve.
"We will pray for Rafael. We know that all things work together for good to them that love God, to them who are the called according to his purpose. Romans 8:28."
Detective Inspector Kate Atton said: "Rafael's death is believed to be a tragic accident and the case will now be passed to the coroner for progression.
"My thoughts are with Rafael's family and friends as well as his school colleagues at this terrible and sad time.
"I would urge people, especially children, to take care around the water and try not to swim anywhere other than supervised swimming pools."
