The water is really filtered quickly with the PureAdvatange as now but the microbiological properties of water after filtering are accurate, I can not answer at this point. In my region, the tap water tastes unfortunately quite metallic and too much chlorine, which is why I can not drink it pure. After filtering the Pure Advantage is the water much softer in taste, neutral and just "pure". The subjective quality of drinking water is definitely increased. In addition, I use the filter for the water my bearded dragon who also prefer to like the filtered water appears.
The durability of a single filter cartridge is provided with a month, a decrease in the filtration quality I can not tell after 4 weeks. Delay longer I would use for hygienic aspects not, however, I generally recommend a regular cleaning to prevent any bacterial contamination.
The 6-pack filter cartridges come here at Amazon to fair 24.99, which corresponds to approximately 4.17 per month. Even the cheapest bottled water can not keep up here, especially as it has here also the smuggling at the neck. After two years of use the Pure Advantage has definitely proven and I will like to stay with this system.