מַעְיַ֣ן גַּנִּ֔ים בְּאֵ֖ר מַ֣יִם חַיִּ֑ים וְנֹזְלִ֖ים מִן־לְבָנֽוֹן׃
너는 동산의 샘이요 생수의 우물이요 레바논에서부터 흐르는 시내로구나
Rashi
You are a garden spring. All this refers back to, “Your arid fields,” and he praises them like a fountain which irrigates them. The allegory is: It refers to the immersions of purification which the daughters of Yisroel immerse themselves.
Rashi
And flowing streams from Levanon. From a place of cleanliness, without the murkiness of mud.