What boundary governs water in a private cistern, a town cistern, and a public (ownerless) cistern?

ShabbatTechum Shabbat

Synopsis

Still, collected water in a private cistern follows the owner's boundary; a town cistern follows the town residents' collective boundary; an ownerless cistern follows the boundary of whoever draws from it. Mishnah Berurah distinguishes cisterns from flowing wells.

Rishonim
Early Acharonim
Late Acharonim
Lenient
Strict
Lesser cited
Major authority

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