These two phrases mean basically the same thing. The writer speaks of a man sleeping only with his wife as if he drank water only from his own cistern or well. (See: [[rc://en/ta/man/translate/figs-parallelism]] and [[rc://en/ta/man/translate/figs-metaphor]])
The writer speaks of fresh or flowing water as if the water were running. AT: "fresh water" or "flowing water" (See: [[rc://en/ta/man/translate/figs-metaphor]])
The writer asks this rhetorical question to emphasize that his son should not do these things. AT: "Your springs should not ... your streams of water should not flow in the public squares." (See: [[rc://en/ta/man/translate/figs-rquestion]])
Here the words "springs" and "streams of water" are likely euphemisms for male reproductive fluids. Possible meanings for these metaphorical phrases are 1) sleeping with women other than one's wife is spoken of as if it were allowing one's water to flow in the public streets or 2) having children with women other than one's wife is spoken of as if it were allowing one's water to flow in the public streets. (See: [[rc://en/ta/man/translate/figs-euphemism]] and [[rc://en/ta/man/translate/figs-metaphor]])