Would still like to hear what the solution/problem was with the low
flow at the one outlet. Sounds like what you said, corroded pipes but
at least pull the aerator screen out an clean it before panicking.
Residential well systems are really very simple. Most problems are
easy to diagnose if you start at the right point. Problems with
delivered pressure?, problems with low flow?, problems with pump short
cycling? Doesn't matter what the problem is, first thing to do is make
sure the tank has a proper pre-charge and that the switch is operating
to turn the pump on/off at the pressures set.
Shut off pump, drain tank and pre-charge to 2 psi below cut-in. Doesn't
hurt to replace the pressure gauge if it is old. Before proceeding,
pull the pressure switch which will usually be on a 1/8" pipe. Clean
the pipe - amazing how often that will totally or at least partially
clear a problem. Turn on pump and monitor operation.
This has now eliminated the pressure tank (at least) from consideration
(even if the bladder is blown the system will operate correctly for a
time). If it is cycling correctly, you have eliminated the pump as a
Low pressure/flow problem is never a problem with the tank/switch/pump
as long as they are operating correctly. Most common causes are 1:
corroded pipes. 2: Plugged up water filter. 3: partially closed