My morning shower had become a sad drizzle. I blamed the plumbing. I blamed the water company. I started showering at the gym just to feel what strong water pressure was like again. The fix took seven minutes and cost zero dollars.

Check the Shower Head First

Unscrew the shower head. Inside the threaded connection, there is usually a flow restrictor — a small plastic or rubber disc with a tiny hole. This is required by law in many places to limit water usage. Over time, mineral deposits clog that already-small hole even further.

Soak the shower head and the flow restrictor in white vinegar for an hour. If you can see through the little holes in the shower head face again, great. If the restrictor is completely clogged, you can remove it entirely — your water pressure will be incredible. Just know your water bill will notice.

The O-Ring Trick

While the shower head is off, check the black rubber O-ring where the head connects to the pipe. If it is cracked, flat, or missing, water leaks out around the connection instead of going through the shower head. A replacement O-ring costs about fifty cents at any hardware store.

Could Be the Valve

If cleaning the shower head does not help, the issue might be the shower valve behind the wall. This is more involved. But before calling a plumber, try this: remove the handle and trim plate, and look for shut-off valves on the hot and cold lines. Sometimes they get partially closed during installation and nobody notices. I found one of mine was only half open. Full-open restored normal pressure instantly.

Whole-House Check

If multiple fixtures have low pressure, check your main shut-off valve. It should be fully open. Also check if you have a pressure regulator on your main water line — a bell-shaped brass device. These can fail and reduce house-wide pressure. A plumber can test and replace it if needed.