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Why Low Water Pressure Happens—and What You Can Do About It

Summer in Modesto can be tough on your plumbing—and your patience. If your showers feel more like a drizzle and your faucets are barely filling a glass, you’re likely dealing with low water pressure. It’s a common issue this time of year, and the good news is: there are solutions. We recommend regular plumbing maintenance in Modesto to help identify and prevent the causes of low water pressure before they become a bigger problem.

At DeHart Plumbing, Heating & Air, Inc., we specialize in pinpointing the source of water pressure problems and getting your system back in shape fast. Whether you’re in a newer development or one of Modesto’s charming older neighborhoods, our team knows how to handle the specific challenges that can affect your home’s plumbing during the hot summer months.

Common Summer Causes of Low Water Pressure

Common Summer Causes of Low Water Pressure

1. High Seasonal Water Usage

Summer means more people are watering lawns, filling pools, and running sprinklers—often all at the same time. This can strain the municipal water supply, especially in densely populated areas. If your neighbors are all using water at peak times, your home may get less of it. Try using your water during non-peak hours, like early morning or late evening, to see if the pressure improves.

2. Irrigation System Leaks or Issues

Irrigation systems are great for keeping your landscaping green, but they can also be a hidden culprit when water pressure drops. A broken sprinkler head or underground leak can siphon off a surprising amount of water, reducing pressure inside your home. You might not see the leak directly, but signs like soggy patches in the yard or unusually high water bills are good clues.

3. Aging or Corroded Pipes

Many Modesto homes have aging plumbing systems, particularly in older neighborhoods. Over time, corrosion, rust, and internal buildup can narrow the pipes, restricting water flow. If your low water pressure is localized to one fixture or gradually worsening throughout the house, your pipes may be part of the problem.

4. Mineral Buildup and Hard Water

Modesto’s water supply contains a fair amount of minerals. Over time, these minerals can accumulate inside pipes, faucets, and showerheads, reducing flow. Left unchecked, this buildup can lead to major blockages that affect your whole system.

What You Can Do

The first step is identifying whether the low pressure is isolated to one area or affecting your entire home. If it’s just a single faucet, the aerator may be clogged. If the whole house is affected, it’s time to dig deeper.

We always recommend a full system inspection to check for leaks, pressure regulator issues, or internal pipe problems. That’s where DeHart comes in. Our licensed plumbers use advanced tools to detect hidden issues, clean out mineral deposits, and repair or replace worn-out pipes—quickly and efficiently.

Don’t Wait Until It Gets Worse

Water pressure issues rarely resolve on their own. They often point to problems that will only get worse with time. By acting now, you can save yourself the headache of bigger repairs down the road.

Contact DeHart Plumbing, Heating & Air, Inc. today for all your plumbing needs!

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