Dimitrios Paskoudniakis wrote:
I recently moved to a home with a well, previously only living in homes with
city water.

The previous owners had valves set to bypass the water filter. A few weeks
ago, I opened valves to divert the water back through the filter. In the
past week, the house water pressure has dropped significantly. If I close
the flow to the filter and reopen the valve to bypass the filter, the
pressure is fine. A couple weeks ago, I also drained and refilled my hot
tub, which required alot of water.

What's going on with sudden low pressure through the filter line? The
filter looks OK. Incoming and outgoing water is clear.

Also, my well tank had a preset pressure of 38 psi. There is a pressure
gauge between in the incoming house water and the tank that reads 50 psi.
Does this mean the air in the tank is 50 psi, and is this too high?

I am not familiar with maintenance on filters but yes, the filter is
the problem. Probably clogged. Require some kind of back flushing or
replacing he medium.

As to the pressure. Not enough information. Is your set-up running a
'constant pressure' system, i.e., does the guage show the pressure
going up to a certain pressure - cutting off- then coming on at a lower
pressure? Or does the guage show the same pressure all the time? You
need to watch the guage while you are drawing water to check.

If it is the most common type - has a hi cut off/low cut on the proper
tank precharge is 2 psi below the cut-on setting. That is set by
shutting the pump off and then drawing all the water you can out of the
system (empty tank).

Normal setting for that type switch a

20-40 - rare as 20psi is not really very acceptable on sprinklers,
showers, etc.
30-50 - common but even 30 psi will give problems with some sprinklers.
40-60 - common and very nice performance throughout the range.

Settings above 40-60 are not recommended for residential use as they
cause excessive stsrain/wear on fittings.

Your reading of 38 with a guage reading of 50 (if it varies) would be
correct for a 40-60 set up.

I haven't worked with a constand pressure set-up so I can't answer if
the 38 setting is correct for those.

Harry K