Majma al-Zawaid — Hadith 5712

Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) narrates that the Prophet (peace and blessings be upon him) said: "The best water on the face of the earth is the water of Zamzam; in it is the sufficiency of food and a cure for the sick. The worst water on the face of the earth is the water of the valley called Barhut, which is in Hadramawt; it is a place like the leg of a locust among the creeping creatures. In the morning water flows there, and in the evening there is not even a trace of moisture in it."
Al-Tabarani recorded it in al-Mu'jam al-Kabir, and its narrators are thiqat (trustworthy); Ibn Hibban declared it sahih (authentic).