[AmandaJayne]

We moved into our house Sept 2012. We've had good water pressure the whole time although the water surged as the pump was pumping the water. We got a used Culligan water softener and hooked it up to the existing pipes for the Culligan water softener that had previously been installed in the house. We noticed that the hot water was still working, but the cold was just a trickle. We replaced the whole house filter, which was so old and gross that it was orange and we had to scrape the rest of it off the plastic in the hopes that it was the problem.

Even with the water softener completely removed, our water pressure is reduced to a mere trickle from most of the faucets. One toilet still flushes fine and our shower has a decent spray. I'm ready to call in the professionals to get this resolved, but I thought I'd check to see if anyone had any ideas.

 

[jagans]

SO basically, you never maintained your sediment filter, sediment has clogged the aerators on all your sinks, and you are asking whats wrong? Most single lever cartridges have internal screen filters that need to be cleaned also. Ultrasonic cleaners work well for this if you have one. The aerators are facing down so turning clockwise looking down removes them for cleaning.

You replaced the whole house filter right? "Scraping" it is not going to cut it.

 

[Akpsdvan]

Also if you bypassed the Culligan with its bypass there most likely is build up with in the bypass and either opening it and closing it a few times might clear that part of it out or it too is going to need cleaning.
Most likely the valve body has an iron build up and will need some work.