Contaminated water sources must be treated to eliminate pathogens before they can be used for human consumption. Various water treatment techniques are used by public water systems to ensure that the water they supply is safe to consume.
To put it another way, sediment clogs group head injectors, flowmeters, and solonoid valves while also wearing down excessively the water pumps and valves that keep them running. Increasing the scale lowers machine efficiency by up to 40% (as well as increasing machine startup time and decreasing machine recovery), and ultimately the machine becomes totally blocked by the increased size. Another problem with scale is that it interferes with sensors like the water level probe, causing the boiler to overfill or run dry. Because espresso is made up of 98 percent water, substances like chlorine will have a detrimental impact on the flavour.
Therefore, selecting the appropriate water filter is critical for both the quality of the espresso and the efficiency of the machine. Aside from that, certain water filters have been shown to be effective in the fight against parasites including giardia and cryptosporidium. As a result, water filtration is strongly recommended for all espresso machine installations!