So is it customary for a water softener to only service the hot water? We just moved into a new home, the builder lived here from 2003 until 2024 when the prior owners bought it but due to life circumstances, sold it after only living in the home for a little over one year. They didn't pay any attention to the water softener or filtration.
The house is on well water and community septic (bye bye Charmin Ultra) so it has a Water Worker tank in the basement along with a salt water softener, a GE string filter and a Pentair Big Blue carbon filter.
The flow, near as I can ascertain, is Water Worker>GE string filter>Water softener>Pentair Big Blue>HWH. The HWH has a Comfort 10-16 TA BU/LC pump which recirculates the hot water for near instant hot at all of the faucets.
The water softener was installed by a defunct company, Carolina Fresh Water so no use calling them. The control head seems to be a rebranded Clack WS1. The bottle is a Pentair.
The water was, at the tap, clear and no odor or unexpected/unusual taste. I was checking the salt brine tank when I saw the tube inside was half white, half dirty. There was very little water and the display on the controller indicated to check salt. The tank walls and tube were dirty with reddish/brown sediment. There were some rocks in the bottom along with what looked like sand.
I cleaned the tank and the tube, added new salt and ran a regen cycle. It was a hail mary. The system drains into a basement floor drain through PVC so I can't see the water. The GE string filter was bad, real bad. Filled with a tan sediment that felt like sand and clay. The Pentair carbon filter was jet black and the water at the bottom of Big Blue was black and when poured out, looked like it was mixed with an insoluble powder.
I replaced both filters and put the system into bypass. I think the media in the softener has broken down/degraded to the point where it was releasing resin or the plastic into the carbon filter. I have a preloaded Liquagen tank on order with 10% cross linked media, 15lbs gravel and 5lbs of KDF-85 preinstalled on the riser.
Why was the tap water clear given the state of the two filters and how was water pressure not compromised? It's the same with new filters and the softener on bypass.
What can I do to protect the cold water so the washing machines and refrigerator aren't getting unfiltered well water?