Can PVC pipe be used on any part of a home water filter system?
@mwilles 
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The filter piping is part of the potable water distribution system. If your state follows the IRC, it’s not an approved material according to table 605.4.
If we are talking about the service main, which we are not, yes, it would be approved.
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Not if it is installed after the main shut off.
FBC Plumbing 605.4 as Martin mentioned and FBC Residential
P2906.4 Water service pipe.
Water service pipe shall conform to NSF 61 and shall conform to one of the standards indicated in Table P2906.4. Water service pipe or tubing, installed underground and outside of the structure, shall have a working pressure rating of not less than 160 pounds per square inch at 73°F (1103 kPa at 23°C). Where the water pressure exceeds 160 pounds per square inch (1103 kPa), piping material shall have a rated working pressure equal to or greater than the highest available pressure. Water service piping materials not third-party certified for water distribution shall terminate at or before the full open valve located at the entrance to the structure. Ductile iron water service piping shall be cement mortar lined in accordance with AWWA C104/A21.4.
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Can vs should
As much torque that it can sometimes take to remove the filter housing, I’m not sure I would want it attached to PVC.
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I agree. I pulled the concrete screws holding the filter bracket to the foundation wall right out trying to get mine off. Those filter housings seem to have a mind of their own.
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You used the 4’ cheater bar too?
Actually, yes, lol. I have a pipe now that I put over the end of the filter wrench. After re-fastening the bracket to the wall, I’ve become pretty good at using the pipe and various body positions to loosen it without putting too much stress on the bracket.
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Try using vaseline on the threads and O ring.
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LOL
It was the tipping point for me. A couple weeks later I tore out the filter and water softener.
I do always put it on the o-ring.
On a side note, I gotta take a pic next time I change mine out. Holy crap is their a lot of “debris” in the well water.
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I used Crisco.
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