A:Answer Hello.
Thank you for reaching out regarding your Samsung - 19.5 cu. ft. 3-Door French Door Counter Depth Refrigerator with Wi-Fi if you need to have a special water line. Regarding your concern, this refrigerator has an external water line; hence you need to purchase water line installation kits that are available at extra cost from your retailer. We recommend using a water line installation kit that contains copper tubing and a 1/4" (6 mm) compression nut.
I suggest you check this link to your user manual for assistance. Please go to pages 28 to 30.
https://downloadcenter.samsung.com/content/UM/202206/20220613181444083/DA68-04132A-03_EN_MES_CFR.pdf
Should you need more assistance, please feel free to get back to us via the following options:
1. Facebook Messenger: http://m.me/samsungsupport
2. Twitter: https://twitter.com/messages/compose?recipient_id=18768513
3. Samsung Community: https://us.community.samsung.com/t5/Samsung-Community/ct-p/us
Reference Ticket Number: 1144647143
Thank you for being a valued customer of Samsung. Have a great day.
^Camille