Same low pressure if using pump?
Did you check/clean 'screen/washer' in city water hose connection?
Could be check valve in city water' inlet assembly failing....restricting flow.
And IF you have same low pressure using pump........do you have a WHOLE House filter.........clogged up?
Is low pressure/flow at all faucets/shower/toilets?
Dirty aerators at faucets...plugged water valve for toilet?
Process of elimination......one item at a time
Is it time for your medication or mine?
2007 DODGE 3500 QC SRW 5.9L CTD In-Bed 'quiet gen'
2007 HitchHiker II 32.5 UKTG 2000W Xantex Inverter
US NAVY------USS Decatur DDG31