You can backflush the MUV 2 Hollow Fiber module. If you backflush it after each usage it will give you an almost unlimited lifespan for this filter. The MUV 1 Activated Carbon and MUV 3 Nanalum modules are closed systems and cannot be backflushed.
The MUV is manufactured in many countries including Korea, Taiwan, China, and the United States. We have rigorous quality control measures and independent testing to ensure we can provide a product that people can depend on.
This depends on a lot of different factors. The turbidity of water plays a large role in how much water can be filtered. The dirtier the water the less it will filter over the filter's life. The MUV 2 Hollow Fiber module can filter 100,000 gallons. The MUV 1 Activated Carbon module can filter 150 gallons and the MUV 3 Nanalum module has been tested to filter 90 gallons.
With hollow fiber membrane and Nanalum the filter will stop allowing water through. With activated carbon we recommend replacing the filter every year to be on the safe side. If you drink a lot of water through the filter then you should replace it more often.