Supermax (short for: super-maximum security) is the name used to describe control-unit prisons, or units within prisons, which represent the most secure levels of custody in the prison systems of certain countries.
Consumer Complaints and Reviews. Outrageously expensive for services not provided: $690 - the cost to purchase your own, high-quality softener and RO filtration plus 1 year of filters and salt. $5,770 - the cost of a 3-year contract with Culligan to rent their basic softener and RO filtration with service.
I chose to rent a water softener from Tri County Water because I knew I would be getting a high quality softener at a very good monthly rate. I know of other companies that use cheap products for rentals, but I know for a fact that Tri County does not do that.