Is your morning shower more of a drizzle than a downpour? If you’re experiencing low water pressure in Norwell or across the South Shore, you’re not alone. Coastal weather, seasonal temperature changes, and aging plumbing infrastructure all contribute to water pressure issues in Massachusetts homes.

At Blue Harbor Plumbing, Heating & Cooling, we’ve seen firsthand how these factors impact local plumbing systems. Here’s what could be causing your low water pressure – and how to fix it.

6 Common Causes of Low Water Pressure

1. Clogged Pipes & Fixtures

The South Shore’s hard water and older municipal systems can lead to mineral buildup inside pipes. Coastal homes near the ocean are especially prone to accelerated accumulation, restricting water flow over time.

Fix It: Cleaning or replacing clogged faucet aerators and showerheads can improve flow, but deep pipe clogs often require professional cleaning or repiping.

2. Corroded Plumbing

Many historic Norwell homes still have galvanized steel pipes, which corrode over time. Humidity and salt air accelerate this process, particularly during cold winter months, leading to restricted water flow.

Fix It: If your home still has galvanized pipes, consider upgrading to copper or PEX piping for better water pressure and long-term durability.

3. Faulty Pressure Regulator

Due to coastal elevation changes, homes in low-lying areas near Norwell’s North River may require a pressure regulator to maintain steady flow. When this device fails, it can cause fluctuating or persistently low water pressure.

Fix It: A licensed plumber can test and adjust or replace your pressure regulator to restore proper flow.

4. Water Main Issues

The South Shore’s water infrastructure faces seasonal changes, including:

• High irrigation demand in summer
• Freezing temperatures in winter

These fluctuations affect local water pressure, particularly during peak usage hours.

Fix It: Check for public water main repairs in your area, and if the issue persists, a plumber can inspect your home’s connection for leaks or damage.

5. Hidden Leaks

Undetected leaks inside walls, ceilings, or underground can drain water pressure without you realizing it. The freeze-thaw cycles of New England winter can weaken pipes, leading to cracks and leaks.

Fix It: Monitor your water meter during spring thaw – if it continues running when no water is being used, you likely have a leak that needs immediate professional attention.

6. Main Valve Issues

Many South Shore homeowners experience water pressure problems because their main shut-off valve isn’t fully open. After winter, valves can stiffen or partially close, restricting flow throughout the home.

Fix It: Locate your main water shut-off valve (typically near the water meter) and make sure it’s fully open. If the issue persists, a plumber can inspect the valve for damage or mineral buildup.

When to Call a Plumber for Low Water Pressure

Come water pressure issues can be resolved with DIY fixes, like cleaning aerators or checking for visible leaks. However, professional service is needed when:

• Low pressure affects multiple fixtures throughout your home
• You notice discolored water or strange noises in your plumbing system
• There are signs of water damage on walls, ceilings, or floors
• Your water pressure suddenly drops for no obvious reason

Ignoring these signs could lead to bigger plumbing problems – like leaks, burst pipes, or costly water damage.

Fix Your Water Pressure Issues with Blue Harbor Plumbing, Heating & Cooling

Whether your low water pressure is due to aging pipes, hidden leaks or municipal supply issues, the licensed experts at Blue Harbor can help.

Call (781) 421-7377 for expert plumbing solutions throughout Norwell and the South Shore area!