Hi Dooug,
Thank you for bringing this to our attention. I appreciate your taking the time to raise this inquiry regarding the 21.8 Cu. Ft. French-Door Refrigerator.
The fridge can be directly connected to your main water supply or thru a water filter system (not included). Please see the user manual link below.
INSTALLATION OF THE WATER LINE on page 16
https://downloadcenter.samsung.com/content/UM/202108/20210820130659841/DA68-02657A-12_IB_IBACI_EN_ES_FR_200907.pdf
In case of repairs will be needed, please take note of your warranty coverage:
https://www.samsung.com/us/support/service/warranty/RF220NCTASR/AA
One (1) year parts and labor
Five (5) years parts and labor on Sealed Refrigeration System Only (Compressor, Evaporator, Condenser, Drier, and Connecting Tubing)
Ten (10) years part and Five (5) years labor on Digital Inverter Compressor Only
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 Number: 1144746151
Have a great day.
^Charles