If you discover a single faucet or shower head in your home has lost its normal water pressure, the reason is probably a buildup of silt in the aerator. There might be other reasons, but they’ll be connected to that specific tap.
But what’s going on if taps all around the house have experienced a drop in water pressure? That’s not a minor problem. Something bigger is occurring, and you’ll want to get to the bottom of it soon. In some situations, you’ll need to call a professional plumber in Corona, CA to investigate and fix the issue.