A cross-connect is any connection between facilities provided as separate units by the datacenter. In other words, if you rent a cage, you can run cables betweeen your various racks and they are not really considered cross connects. But typically a user facility is a rack. Consider the uplink to a network provider. The line that runs from you to the telco's rack is a cross-connect. Any other between-rack cable run falls in this category. Even if the datacenter is bundling network access, it's still a cross-connect. (It's also typical to have a meet-me room that is the center of all the cross-connects, it's a patch-panel room or cage.)
Water recycling is the process of taking effluent (wastewater and sewage) and treating it so that it can be reused. For potable (drinkable) use, the recycled water has to be treated to a sufficiently high level that it's suitable for human consumption.
1 It is simply water with carbonation added and is also called sparkling water, carbonated water, or seltzer. 2  Bottled soda water is available, but the freshest soda comes from an old-fashioned soda siphon and has a carbonation that bottled waters do not. The siphon is the way the bartenders of old made soda and many still use it because it produces a pure and effervescent soda. 2  Club Soda: Club soda and soda water are almost identical, and sometimes club soda is just another name for soda water. 3  The two are interchanged in drinks all the time.