We have a house on its own well with low water volume. The pressure switch is set to come on at 48 lbs, turn off at 68 lbs. The pressure tank is an 85 gallon unit set to 46 lbs. From the tank the whole house was 1/2" copper. I'm changing the main lines, cold first, from the 1/2" copper to 3/4" pex a little each day so we have water every night. We now have even less volume from every tap since I started this project, also I was concerned about the pex connectors being smaller ID so I measured the difference between the inside of 1/2" copper and pex fittings. Pex is 1/16" bigger. (that's not much, but is bigger!)....The cold lines are now finished with 3/4" pex running to within a few feet of each tap, from there its back to 1/2" copper. Water volume is still down from when I started and I don't understand why or how to correct it. I seem to be going backwards. The problem of water volume dropping when more than one tap is on has been resolved. Is there something I missed or did wrong? I"m reluctant to start the hot water lines in case I further reduce the volume! Thanks.

Do you have a hose bibb (water faucet) right at the well pump? If so, if you connect a garden hose (I think they are usually 5/8" and run it is the water flow as strong as you'd like for it to be?

Have you checked your faucet aerators? Working on the system may have dislodged debris and washed it upstream to your faucet aerators.

Thanks stuckinlodi and m & m for your replys. First thing I did after reading your posts was check the aerators, found them clean. I do have a bib right at the well. The volume there seems fine, fills a 5 gal. pail in 47 sec. Next I filled the pail using an outside bib on the other side of the house. Times were very close. But that still doesn't explain the water reduction at that taps while I was changing the main line to 3/4". I'm still at a loss as to why and how to get the volume back.



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yes, there is something going on, but at least you know your well is ok and what it is capable of. When you put in the pex lines did you also add a pex manifold? If so maybe there is something happening with it. You could try bypassing around it to see if pressure & volume increases. Also, when you connected the pex to copper pipe how was that attachment done, any chance there is a reduction in the inner diameter at that joint? If that fitting to make the transition from copper to pex is the type that slips inside the copper there may be a reduction in the water passageway to much less than 1/2" at that point.

just an idea.....



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