My under-the-kitchen-sink reverse osmosis drink hose system have low sea pressure than everyday. What's wrong?

My RO system is 9 years old. The storage cistern had worked okay and provides plenty drinking water at the faucet until only just. It now give only 5 oz river before the pressure diminish to nothing and no water flows out. I hold replaced the filter cartridges yearly. What's wrong?


Answers:    You enjoy a blockage in the filter because some dampen is slowly getting through. Check ALL the filters
blockage contained by pipes
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