Why Is My Water Heater Leaking From the Bottom?

water heater leaking from bottom

A leaking water heater can be stressful and potentially damaging to your home. If you notice water pooling around the base of your water heater, it’s crucial to understand the cause and take action promptly. Leaks rarely fix themselves, and ignoring them can lead to costly repairs or complete water heater failure.

Here’s what might be causing your water heater to leak from the bottom.

1. Condensation on the Tank

Sometimes, what looks like a leak is actually just condensation forming on the outside of the tank. This can happen in humid environments or when cold water enters a hot tank.

What to do:

  • Wipe down the tank and monitor it over a few days.

  • If moisture continues to accumulate, further inspection is needed.

2. Loose or Faulty Drain Valve

Most water heaters have a drain valve at the bottom for maintenance. If this valve is loose, cracked, or damaged, it can drip or leak water.

What to do:

  • Tighten the drain valve carefully.

  • If the leak persists, replace the valve with a new one.

3. Leaking T&P (Temperature and Pressure) Relief Valve

The T&P valve is a safety feature that releases water if the tank pressure or temperature gets too high. If this valve is faulty or the pressure is consistently too high, water may leak from the bottom of the heater.

What to do:

  • Inspect the valve for proper operation.

  • A plumber can replace the valve or adjust the tank pressure to prevent future leaks.

4. Corrosion or Rust in the Tank

Over time, the inside of a water heater tank can corrode, especially in older units. Once the tank walls weaken, water can seep through the bottom. This is often a sign that the water heater is nearing the end of its life.

What to do:

  • Check the tank for visible signs of rust.

  • Replacement is typically the safest and most effective solution for corroded tanks.

5. Loose or Damaged Plumbing Connections

Sometimes, leaks aren’t from the tank itself but from pipes or fittings connected to it. A loose, cracked, or improperly sealed connection can appear as a leak from the bottom of the heater.

What to do:

  • Inspect the inlet and outlet pipes, as well as fittings.

  • Tighten or replace any damaged connections with a licensed plumber’s help.

When to Call a Plumber

If you notice water pooling around the base of your water heater, don’t delay. Davis Plumbing & Heating, Inc. offers expert inspection, repair, and replacement services for water heaters in Riverside County, Menifee, Perris, and surrounding areas. Our trained technicians can quickly determine the cause of the leak and recommend the safest solution.

Signs you need immediate professional help:

  • Continuous leaking from the tank bottom

  • Rust or corrosion visible on the tank

  • Water pooling spreading onto your floor

Final Thoughts

A water heater leaking from the bottom is usually a sign of a serious issue. Addressing leaks early prevents damage to your home, avoids costly repairs, and ensures you continue to have reliable hot water.

📞 Call Davis Plumbing & Heating, Inc. at (951) 657-0393 today for fast, reliable water heater leak repair or replacement in Riverside County.