A:Answer Hi Sandy,
No, a water line is not needed with this Samsung refrigerator model since it is not equipped with an ice maker, water dispenser, or autofill pitcher. I have shared this model's user manual. Please turn to page 15 for guidelines or requirements for the place of installation.
https://downloadcenter.samsung.com/content/UM/202010/20201005164257413/Onedoor_RR7000M_FRE_DA68-03561Z-00_EN-MES-CFR.pdf
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Leo