[Fulltiming]

The sink is molded/integral with the countertop. Replacement options are 1) replace the entire countertop or 2) cut the sink out and install a new over the top edge sink. If the issue is scratches, a professional can sand it down and make it almost like new. I tried it myself in our bricks and mortar house and spent weeks with fine Corian dust settling all over the house (yes, I was using a small electric sander with a vacuum hose attached to a shop vac but it didn't prevent the white dust). The professional had a sander with a large vacuum, multiple filters inline and a hood over the sander to catch the particles that would get loose otherwise.

I have the dual Everpure filters that Newell originally installed in my coach. The filters (THM#1 EVRPRE#960126 and THM#2 EVRPRE#960136) are pricey but extremely effective assuming you change them out every year. Those filters only feed the ice maker, drinking water dispenser on the sink and since I replumbed it, the InstaHot since we use that for hot tea.