Low water pressure is one of those plumbing problems that seems minor but can signal something serious. If your shower feels weak, your faucets trickle, or it takes forever to fill a pot, here's what might be causing it — and what to do.
Common Causes of Low Water Pressure
1. Mineral Scale Buildup in Pipes
Central Florida's hard water leaves calcium and magnesium deposits inside pipes over time. In older homes with galvanized steel pipes, this buildup can reduce the pipe's interior diameter significantly, restricting water flow throughout the house. This is one of the most common causes of gradually declining water pressure in Poinciana homes.
2. Partially Closed Shutoff Valve
If low pressure appeared suddenly, check whether the main shutoff valve or the meter shutoff valve is fully open. Sometimes these valves get partially closed during repairs or maintenance and aren't fully reopened. This is an easy fix — just turn the valve fully counterclockwise to open it completely.
3. Failing Pressure Regulator
Most homes have a pressure regulator (also called a pressure reducing valve or PRV) that controls the water pressure entering the home from the municipal supply. When this valve fails, pressure can drop significantly throughout the house. Pressure regulators typically last 7–12 years and are a common cause of sudden pressure loss in older homes.
4. Hidden Leaks
A significant leak in your supply line — whether behind a wall, under the slab, or underground — can cause a noticeable drop in water pressure. If you notice low pressure along with an unexplained increase in your water bill, a hidden leak is a likely culprit. Call a plumber for leak detection immediately.
5. Municipal Supply Issues
Sometimes low pressure is a temporary issue with the municipal water supply — a main break, maintenance work, or high demand during peak hours. Check with your neighbors; if they're experiencing the same issue, it's likely a supply problem rather than something in your home.
6. Corroded or Damaged Pipes
Older homes in Poinciana with galvanized steel pipes may experience low pressure due to corrosion narrowing the pipes from the inside. If your home has galvanized pipes and you're experiencing persistent low pressure, repiping with modern PEX or copper may be the best long-term solution.
What to Do About Low Water Pressure
Start by checking the obvious: make sure all shutoff valves are fully open. If pressure is low throughout the house (not just one fixture), the issue is likely in the main supply line, pressure regulator, or main pipes. If it's only one fixture, the problem is probably localized to that fixture's supply line or aerator.
For persistent or sudden low pressure, call Poinciana Plumbing Pros at (407) 305-2069. We'll diagnose the cause and give you an upfront quote for the fix.