“Water, water, everywhere Nor a drop to drink" the line is from -

Among the many memorable lines from ‘The Rime of the ancient Mariner’ poem is an utterance in stanza nine:
“Water, water, everywhere
Nor a drop to drink.”
In this poem, the title character detains one of three young men on their way to a wedding feast and mesmerizes him with the story of his youthful experience at sea—his slaughter of an albatross, the deaths of his fellow sailors, his suffering, and his eventual redemption.

Source: Encyclopedia Britannica