Pressure Tank 101: Signs It’s Failing & What to Do

If your water pressure keeps pulsing or your well pump seems to run nonstop, your pressure tank might be the culprit. This critical component stores water and stabilizes pressure between pump cycles, protecting your entire well system. When it starts to fail, you’ll notice subtle — and sometimes expensive — signs. Here’s how to tell when it’s time to repair or replace your well’s pressure tank.

What Does a Pressure Tank Do?

Your well’s pressure tank acts as a buffer between your well pump and your household plumbing. It holds a reserve of pressurized water, so your pump doesn’t have to start every time someone turns on a faucet. This reduces wear, stabilizes pressure, and ensures steady water delivery throughout your home.

Common Signs of a Failing Pressure Tank

• Pump short cycling: The pump turns on and off rapidly, sometimes every few seconds.
• Uneven water pressure: Faucets sputter or lose pressure while running.
• Tank feels full of water: When you tap the tank, it should sound hollow near the top — a waterlogged tank will sound solid.
• Air spurts from faucets: Indicates a ruptured bladder or loss of air charge.
• Higher electric bills: A failing tank forces the pump to run too often, increasing energy costs.

Why Pressure Tanks Fail

In Texas, high water hardness and mineral buildup can cause corrosion inside the tank. Over time, this wears out the rubber bladder that separates air from water. Without proper air pressure, the pump can’t build consistent water pressure, leading to cycling problems and eventual pump burnout.

Testing and Maintenance Tips

• Check tank pressure annually with a tire gauge at the air valve (usually 2 PSI below cut-in pressure).
• Inspect for condensation or rust spots on the exterior shell.
• Flush sediment from the tank base each year to prevent clogging.
• Have a professional from 77 Water Well inspect the tank if short cycling persists after recharging air pressure.

Repair or Replace?

If the tank is relatively new (under 5 years old) and the issue is minor air loss, recharging may solve it. However, if the bladder is ruptured or the tank is corroded, replacement is more cost-effective. Most modern tanks last 7–12 years depending on usage and water quality.

Frequently Asked Questions

Can I replace just the bladder instead of the whole tank?

Some models allow bladder replacement, but it’s often more practical to install a new tank — especially if rust or scale buildup is visible.

Why is my tank pressure different from my cut-in/cut-out settings?

Tank pressure drops naturally over time. Recheck annually to maintain a 2 PSI differential below your system’s cut-in setting.

What size pressure tank do I need?

Most households use 20–44 gallon tanks. Homes with irrigation or large families may need up to 80 gallons. Well inspections can confirm your ideal size.

Will a constant pressure system eliminate the need for a large tank?

Yes, constant pressure systems use variable speed drives, so a small tank is all that’s required.

Call the Experts

If you suspect your pressure tank is failing, call (281) 378-7020 or contact our team today. 77 Water Well provides expert well pump and pressure tank repair services across Texas to restore reliable water flow to your home.