Top 5 Common Plumbing Issues in San Jose Homes (And How to Fix Them)

If you’re a homeowner in San Jose, chances are you’ve dealt with at least one plumbing issue—whether it’s a dripping faucet, a clogged drain, or inconsistent water pressure. While some plumbing problems are easy DIY fixes, others require the experience of a licensed plumber. Understanding these common issues helps you take fast action, save money, and prevent water damage in your home.

In this article, we break down the five most frequent plumbing problems in San Jose homes, what causes them, and how to handle each one—either on your own or with the help of a local plumbing expert.

1. Clogged Drains and Toilets

The Problem:

Clogs are one of the most frequent plumbing complaints in San Jose. Bathroom drains often become blocked with hair, soap scum, and dirt, while kitchen sinks clog from food scraps, grease, and coffee grounds. Toilets can also get backed up due to flushing too much toilet paper or non-flushable items.

The Solution:

• For light clogs, try using a plunger, drain snake, or an eco-friendly enzyme cleaner.

• Avoid harsh chemical drain cleaners, as they can damage your pipes.

• For stubborn or recurring clogs, especially those deep in your plumbing system, it’s best to call a professional plumber.

San Jose homeowners tip: To prevent clogs, install mesh drain screens and never pour grease down the drain.

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2. Leaky Faucets or Pipes

The Problem:

Dripping faucets or leaking pipes waste water and can significantly increase your utility bill. A leak of one drip per second can waste more than 3,000 gallons per year! Leaks can also lead to mold growth, wall damage, and foundation problems if left unchecked.

The Solution:

• In many cases, replacing a washer, O-ring, or faucet cartridge can stop the drip.

• Check under sinks and around toilets for any signs of pooling water, warped cabinets, or musty smells.

• If you suspect a hidden pipe leak (such as behind walls or under the slab), contact a licensed plumber in San Jose for leak detection.

Did you know? California homeowners can qualify for water-saving rebates when replacing older plumbing fixtures. Ask your plumber about current incentives.

3. Low Water Pressure

The Problem:

Low water pressure can make showers weak and dishwashing frustrating. It’s a common issue in older homes in San Jose, where hard water buildup, corroded galvanized pipes, or leaky supply lines are often to blame.

The Solution:

• First, unscrew and clean your faucet aerators and showerheads, as sediment buildup can restrict flow.

• If that doesn’t help, the issue may be deeper—such as pipe corrosion, slab leaks, or a pressure regulator failure.

• Have a professional plumber conduct a whole-house water pressure test to diagnose and resolve the issue.

Bonus tip: Installing a water softener can reduce hard water damage and improve pressure long-term.

4. Water Heater Problems

The Problem:

If you’re suddenly without hot water or notice rusty water or strange noises from your tank, your water heater may be failing. In San Jose, sediment buildup from hard water is a common culprit. Other issues include pilot light failure, thermostat malfunctions, or a leaking tank.

The Solution:

• Try flushing your water heater at least once a year to remove sediment.

• If it’s over 8–10 years old, or you notice leaks or inconsistent water temps, it may be time to replace it.

• Consider upgrading to a hybrid or tankless water heater for energy efficiency and long-term savings.

Call us at (408) 868-8759 for water heater inspections, repairs, or replacement services throughout San Jose.

5. Running Toilets

The Problem:

A constantly running toilet can waste hundreds of gallons of water per day, costing you money and placing strain on local water resources. This is often caused by a worn-out flapper, faulty fill valve, or an improperly adjusted float.

The Solution:

• Check the flapper for wear and replace if it doesn’t seal properly.

• Make sure the chain isn’t tangled and the float is correctly positioned.

• Most replacement parts are inexpensive and can be installed with basic tools.

If your toilet is still running after replacing these components, call a plumber to inspect for more complex valve or internal tank issues.

💡 Pro Tip: Early Action Saves Money

Whether it's a slow drain, a leak under the sink, or a strange noise in the wall—early detection and repair can prevent expensive repairs and water damage down the road. A minor issue today could become a major headache tomorrow.

That’s why we recommend annual plumbing inspections—especially for older homes or properties with mature trees that can damage sewer lines.

🛠️ Free Plumbing Inspections in San Jose

At Local Rooter Corp., we’ve helped hundreds of homeowners across San Jose with everything from emergency repairs to preventive maintenance. If you're not sure what’s going on—or you’d just like peace of mind—we offer free plumbing inspections throughout the San Jose area.

✅ Fully licensed and insured

✅ Upfront pricing — no surprise fees

✅ Emergency services available 24/7

✅ Friendly, local technicians

👉 Need Help Right Now?

Don’t let a small plumbing problem turn into a big one. Whether it’s day or night, weekend or holiday, we’re here to help.

📞 Call us today at (408) 868-8759 for fast, friendly service in San Jose.