Dutch beer brewn ("since 1870") in the province Limburg. Started in an era when there were still a lot of small breweries, but now the only independent Dutch brewery left. Also the only Dutch brewery licensed to brew their beer from spring water, which is why every bottle is sealed and numbered.
Naturally they put a lot of emphasis on this on their website, to create a sympathetic image. They don't advertise much.
(IMHO) Their beer tastes better than the tasteless swill Heineken manufactures, and less bitter than Grolsch.