The water from as-Suqya' was considered sweetest by the Prophet ﷺ. Qutaybah said: it was a well on two days' journey from Medina.
أَنَّ النَّبِيَّ ﷺ كَانَ يُسْتَعْذَبُ لَهُ الْمَاءُ مِنْ بُيُوتِ السُّقْيَا قَالَ قُتَيْبَةُ عَيْنٌ بَيْنَهَا وَبَيْنَ الْمَدِينَةِ يَوْمَانِ