5 Signs Your Well Pressure Tank Is Failing

Nobody thinks about their pressure tank until the water acts strange. But a failing tank is the most preventable cause of early pump death we see around Prescott — catch it early and you save the pump; miss it and you eventually buy both. Here's what to watch for.

1. The Pump Clicks On And Off Rapidly

Run a faucet and listen near the tank. A healthy system: the pump runs, fills the tank, shuts off, and stays off for a good while. A failing tank: click-on, click-off, every few seconds. That's short-cycling — the tank has lost its air cushion and the pump is doing all the work alone.

2. Pressure Surges In The Shower

Strong, then weak, then strong again in a rhythm — that's the pump cycling in real time because the tank can't smooth out delivery anymore.

3. The Tank Sounds Dead When You Tap It

Tap the tank near the top: it should ring hollow, because the top is supposed to hold air. Tap lower: dull, because that part holds water. If it sounds dull all the way up — or the whole tank is cold and sweating in summer humidity — it's waterlogged.

4. Banging Or Thumping Pipes

Water hammer when the pump kicks on or off means pressure is changing violently — the cushioning the tank should provide is gone. In older Prescott pump houses this also loosens fittings over time, adding leaks to your problems.

5. Rust, Weeping, Or A Sudden Air-Charge Loss

Steel tanks in our mineral-heavy water rust from the inside out; a rust streak or damp spot at a seam means the clock is ticking. Diaphragm tanks fail differently — the bladder ruptures, and the air charge you add leaks away in days. If you (or your service tech) have to re-charge the tank more than once, the tank is telling you something.

Why Acting Early Pays

A pressure tank replacement is a same-day, mid-hundreds-to-low-thousands job. A submersible pump replacement in a deep well is several times that. Since a bad tank actively destroys the pump — tens of thousands of extra motor starts a year — the tank is the cheapest pump insurance you can buy. Read more on our pressure tank replacement page.