These are certainly not all the options available. I will continue to add into and update from this list as more products become available.
1.) Avonite; Terrazzo and Dealer locator on Website
2.) Cobre: Copper : Recycled copper sinks . Order online or call for a distributor
3.) Durat: Polyester based material that contains recycled plastics and is 100% recyclable. Email for distributor.
4.) Eleek: Cast metal sinks
5.) Gore Design Co: Erosion Sink
6.) Grenite: Countertops and Sinks, Composite made of recycled materials
7.) Lithistone: Custom Sinks, with concrete composition. Offer, drop in, vessel and integral sinks
8.) Meld USA: Tile, furniture and more. EcoX material is from concrete and recycled materials
9.) Sonoma Stone: Concrete Sinks / Earthcrete
10.) Silestone: Dealer locator on website. Countertops and integral sinks
11.) Sink Factory (Used sinks)
12.) Stoneware; Handmade Stoneware clays
13.) Syndecrete : Composite material
14.) Totally Bamboo: Bamboo countertops and vessel sinks , Rio Grande Imports ,
Modern Vessel, Rio Grande Imports
15.) Vitrastone: Terrazzo type
16.) Sink that you can take a bath in! Thought this was very interesting!
Resources:
Wall Street Journal Article on Take The Eco Kitchen Challenge
What to do with old Stainless Steel Sinks
What makes the sinks you mentioned eco-friendly?
Good comment, The above mentioned sinks are either product made with post consumer recycled materials, can earn LEED’s credits or come from a sustainable company.
This list missed the most eco-friendly sink in the world. The Sinkpositive that retrofits any toilet and creates a grey water system, saving water, paying for itself, and stopping the spread of germs with a touchless faucet. That should have been #1 on your list. I think they make it with recycled materials, too.