The Biblical pool of Siloam was discovered in Autumn 2004 when workers, digging for a new sewer line, uncovered stone steps. Archaeologists were immediately notified when the steps were found. Subsequent excavations confirmed that what was found was the REAL pool of Siloam. Before the discovery in 2004 it was believed that a Byzantine reconstruction of a pool, less than 70 yards away, was the one mentioned in the Bible.
The pool of Siloam is located on the southern slope of the city of David (the original site of Jerusalem) and is just outside the walls of the Old City. It was fed by the waters of the Gihon springs. The springs were carried to the pool by two aqueducts.
The Bible records that a man BORN blind is HEALED by Jesus after he is told to wash his eyes:
"Now as Jesus passed by, He saw a man who was blind from birth. And His disciples asked Him, saying, 'Rabbi, who sinned, this man or his parents, that he was born blind?'
"Jesus answered, 'Neither this man nor his parents sinned, but that the works of God should be revealed in him. I must work the works of Him who sent Me while it is day; the night is coming when no one can work. As long as I am in the world, I am the light of the world.'
"When He had said these things, He spat on the ground and made clay with the saliva; and He anointed the eyes of the blind man with the clay. And He said to him, 'Go, wash in the pool of Siloam' (which is translated, Sent). So he went and washed, and came back seeing." (John 9:1-7, NKJV)