Plugged toilet metering hole

If it was plastic from the fresh tank, ALL your Faucets and the Toilet would be plugged up. I see this all the time and it is hard mineral deposits. It looks like plastic, but is really minerals. If you want to use some type filter, I would use the standard Canister Filter a lot of RV's use and install at the outlet section to the Water Pump. That way, ALL water is filtered. Doug

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