I suspect the 19% growth was significantly helped by RGB sales at Wegmans. It is a growing chain of upscale food superstores located on the east coast and heavily stocked with Reed's products. They became a Reed's customer only about 2 years ago and all of their 86 stores are located within about a 200 mile radius of the Lion Brewery in Pa., which bottles RGB.
36% drop probably was par for the course as Reed's was undergoing serious plant upgrades. K isn't some power you put into a glass and stir like Kool Aid. It needs time to ferment, and there are other factors that come into play such as temperature.
The drought is putting the supply of California spring water under pressure and the LA plant uses spring water to make Kombucha. Problem is it will cost more if it ever becomes necessary to have spring water shipped in from greater distances. Also, just a few days after Reed's awful cc took place, the California governor ordered a 25% cut in water use. Not sure how this will affect beverage businesses, however.