If a drain's water exits to a karmelit rather than a true public domain, may one pour into it in summer?

ShabbatCarrying and Transferring

Synopsis

The Mechaber permits pouring into any drain exiting to a karmelit in summer without restriction; the Rema records a stringent opinion that a karmelit inside a city is treated like a public domain.

Early Acharonim
Late Acharonim
Lenient
Strict
Lesser cited
Major authority

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