Weak flow at sinks, showers, or appliances is a common plumbing issue in Kansas City homes. When water flow drops and pressure feels low, the cause is often tied to aging plumbing materials, internal buildup, or conditions at the main supply line. These problems can affect one fixture or the entire home. Correct diagnosis matters. Identifying the source early helps avoid unnecessary repairs and protects the plumbing system over time.
Common Causes of Low Water Pressure in Older Homes
Many Kansas City neighborhoods include homes built decades ago. Plumbing materials used at the time play a major role in current water pressure problems.
Galvanized Pipes and Long-Term Buildup
Older homes often still have galvanized steel pipes, either inside the house or running from the water meter to the home.
- Galvanized pipes plug up over time
- Calcium and mineral buildup reduce flow
- Pieces of buildup can break loose and block fixtures
When galvanized piping reaches this stage, pressure loss is permanent. The recommended solution is to remove and replace the old galvanized pipes.
Copper Pipes With Fixture-Level Restrictions
Homes with copper piping can still experience pressure issues at individual fixtures.
- Faucet aerators can become plugged with debris
- Shutoff valves under sinks can restrict flow
- Buildup inside the faucet itself can reduce pressure
Removing the aerator, rinsing debris, and reinstalling it is often enough to restore flow. In some cases, replacing the faucet is necessary.
How to Check Water Pressure in Your Home
Testing pressure helps determine whether the issue is localized or affects the entire plumbing system.
The simplest test uses a pressure gauge from a hardware store.
- Attach the gauge to an outdoor hydrant
- Turn the water on fully
- Read the pressure shown on the gauge
Key Takeaway: Plumbing code requires water pressure entering the home to be 80 PSI or less. Pressure above that level can cause problems. Pressure below that level is acceptable under the code.
Need expert help diagnosing or fixing plumbing issues? Contact Dick Ray for a free consultation and clear recommendations.
When the Issue Affects the Whole House
If low flow is present throughout the home, the problem may be tied to the main water supply or pressure regulation.
Pressure Reducing Valve Requirements
If pressure entering the home exceeds 80 PSI, a pressure-reducing valve must be installed on the main water line where it enters the house.
- Homes can have pressure as high as 120 PSI
- Excess pressure can damage supply lines and fixtures
- Code requires pressure to be reduced to 80 PSI or less
Installing a pressure-reducing valve protects the plumbing system and brings pressure into compliance.
Galvanized Pipe From the Meter to the House
Even if interior piping has been updated, some homes still have galvanized pipe between the meter and the house.
- This pipe can plug up over time
- Pressure loss affects the entire home
- Replacement restores proper flow
Problems Caused by Excessive Water Pressure
High pressure can be just as damaging as low pressure.
- Rubber washing machine supply hoses can burst
- Faucet and toilet supply lines can fail
- Washing machine solenoid valves can be damaged
Keeping pressure at or below 80 PSI protects fixtures and appliances throughout the home.
Professional Solutions Based on the Cause
Our team focuses on identifying the exact source of the problem before recommending repairs.
- Cleaning or replacing faucet components
- Installing a pressure-reducing valve when required
- Replacing old galvanized piping
Each solution addresses a specific cause rather than applying a one-size-fits-all fix.
Get Your Water Pressure Back Under Control
Water pressure problems are common in older Kansas City homes, but they are rarely a mystery once the system is checked correctly. Testing pressure, identifying outdated piping, and correcting pressure levels ensure long-term performance and protect plumbing components. If your home is experiencing ongoing issues, contact us today. Dick Ray can help restore reliable flow and resolve low water pressure the right way.
