 A maltsters ' and brewers ' guild existed in the town in 1601 . The guild created a monopoly on the right to produce malted grain and beer for sale , and kept it in the hands of a select few families , strictly controlled by the guilds . It also implemented rules and regulations on the production of the beer that was designed to protect the quality and reputation of the beer . A system of quality control was put in place ; each barrel of beer that was produced was subjected to a beer tasting by the mayor of the town and a council of elders who evaluated its quality and strength and approved the beer for sale or export with a distinctive stamp . Brewers who attempted to cheat the system of quality control were permanently stripped of their right to produce the beer . The guild also organized the production of beer by the major breweries , which shared the Old Market well . In 1843 and 1844 , there were two breweries in Grodzisk that shared the well . By 1866 , the city had begun taxing the breweries for their use of the municipal wells . Two private breweries built their own wells , and found that the water was just as good as the water from the Old Market . Following this discovery , all of breweries eventually built their own wells . 
