Instruction: Output yes if the supporting document can answer the given question. Otherwise, output no.

Input:
Question: does this royal unit have the viewer on the side to be able to tell how much water is in the lower chamber?
Document: Best tasting water that I have ever had. Very easy to assemble and looks good sitting on the counter. Requires a small amount of time to assemble. Do take care when priming the carbon filters by keeping the water pressure very low. I don't know if I had a bad filter or used too much pressure but I blew a small slit on the side of the filter priming. Called Amazon and they ship next day a new unit. Couldn't ask for a better water system and customer service.
Arrived in record time. Great buy. Can't even tell why it was refurbished. Great great tasting water. So glad it filters out so much! Goodbye Brita and Pur pitchers!
I ordered this in hopes that it will at least help with the problem we have in this area with well water that has a sulphur taste and smell (YUCK)!. Today there is only a slight smell and taste so I can't tell yet just how much this Berkey will help when we have those days when the smell is horrible (fills the kitchen) and the taste is something you only taste once and never again.
I got my Berkey assembled with absolutely no problem and have no problem with leakage around the spigot. The instructions didn't really spell out the correct placement of the washers on the spigot, but the instruction booklet did under the "Leaking Spigot"  section. The white beveled washer goes on the outside with the beveled side facing the chamber. I'm 66 years old (almost :), and I am small, yet hand tightening it as instructed in the booklet worked like a charm.The water is GREAT!
If you just pour the water into the holding the tank, the flow might be reduced to as if you purged the filters before installing them.I like how the Royal Berkey does not stand 3 feet off the counter top. Being 5 feet 9 inches tall, I can walk up to the Berkey, lift the reservoir lid and easily see how much water is in it.
I couldn't tell a difference in GV spring water that smelled and tasted more plasticky.I'm sure I've read that these original Berkfield ceramic filters are used by aid agencies in Africa, but I'm no longer sure I believe it.
Dint not have any luck with tis product. My brother in law has one and swears by it but we bought 4differemt ones and had to return all 4of them. 3of them had holes on the bottom chamber, the one we bought from amazon the screw of one of black filters was stripped so it failed red dye test because water was leaking in bottom chamber. Wouldn't recommend this product, too many issues for the money you pay.
This may be a great water filter, but it is technically incorrect and highly misleading to call it a water "distiller", as some are doing! Water distillers boil water and collect and condense the rising steam back into pure water, leaving all the impurities behind in the boiling chamber. Distillers are capable of converting any water, even sea water into pure water, and they'll even remove radioactivity from water.
I have nothing but positive things to say about this water filter/ purifier. The water taste far superior than anything from a plastic bottle. I am so happy that I don't have to have my water in chemical laced plastic anymore. We used to go to the store to pay and lug home cases of water, no more after buying this unit. When we were using bottled water, we really used it to drink, and not to make coffee or for cooking.
Unit assembled easily. All you do is screw in two cartridges and stack it together. If you get the white fluoride filters to add on, they are a little clunky. I no longer buy gallons of water every week, our family takes this unit camping, and if were out of power and clean water after a hurricane or storm, we aren't out of clean water! Lake water tastes fantastic and so does my tap water here in the city, not to mention morning coffee.
Answer: yes