The exception, which reserves for sterility places to which the living water does not reach, probably indicates that the life and health are solely due to the stream which proceeds from beneath the throne of God. Compare Isaiah 57:20-21.
Related Commentaries of Ezekiel 47:11
Ezekiel 47:11
11 But the miry places thereof and the marishes thereof shall not be healed; they shall be given to salt.