Muhammad ibn Ahmad ibn Yahya, from al-Hasan ibn al-Husayn al-Lu'lu'i, from Abu Dawud al-Munshid, from Ja'far ibn Muhammad, from Yunus, from Hammad ibn Isa, with the same wording:
Imam عليه السلام said: "All water is pure until it is known to be impure."
Ali Akbar al-Ghaffari
Tahdhīb al-Aḥkām fī Sharḥ al-Muqniʿah, vol. 1, p. 228
