I have a 4 stage BRS water saver system that’s around 5-6 years old now. I have it hooked up directly to a water supply with a ball valve on the product line so I can turn it on when I need it. For the wastewater, the line goes outside to a bucket, and just a couple days ago I noticed that the bucket was filling up without ever using the RO system. I also haven’t been able to find any leaks coming from the system itself or the product line. Is it possible that the flush restrictor failed or something?