Well Pump Making Clicking Noise

Click-click-click-click... If your well system sounds like it's sending Morse code, you've got a problem that needs attention. That clicking is your pressure switch working overtime—and it's probably damaging your pump with every click.

Understanding the Clicking Sound

The clicking comes from your pressure switch — the small gray or black box mounted on the pipe near your pressure tank. This device monitors system pressure and controls when the pump turns on and off. When water pressure drops to the cut-in point (typically 30 or 40 PSI), the switch "clicks" closed, completing the electrical circuit and starting the pump. When pressure rises to the cut-out point (50 or 60 PSI), it clicks open and stops the pump. Under normal operation, you might hear it click a few times per hour — barely noticeable.

A single click at the start and end of each pump cycle is perfectly normal. The problem is when clicking happens rapidly and repeatedly—that means your system can't maintain pressure, and the pump is cycling constantly.

Cause #1: Waterlogged Pressure Tank (Most Common)

About 70% of rapid clicking problems trace back to a failed pressure tank. Your pressure tank contains an air bladder that cushions the water, providing "drawdown" capacity so you can use several gallons before the pump needs to run again.

When the bladder fails or loses its air charge, the tank becomes "waterlogged"—filled with water and no air cushion. Without that cushion, opening a faucet drops pressure instantly, clicking the switch on. The pump runs for a second, pressure builds, switch clicks off. Pressure drops, clicks on. The cycle repeats endlessly.

How to Check for Waterlogging

1. Turn off the pump at the breaker
2. Open a faucet to relieve pressure
3. Find the air valve (Schrader valve) on top of the tank
4. Press the valve core briefly
5. Water sprays out? → Tank is waterlogged, needs replacement
6. Air only? → Check air pressure (should be 2 PSI below cut-in)

The fix: Replace the pressure tank ($300-$800 installed) or, for bladder tanks, sometimes just the bladder ($50-$150 plus labor). Learn more in our pressure tank guide.

Cause #2: System Leak

If your tank checks out fine, the clicking may be caused by a leak somewhere in your plumbing system. Even when no fixtures are in use, a leak causes slow pressure loss, triggering the pump to maintain pressure.

Finding Leaks

• Running toilets: Most common "hidden" leak—listen or use dye tablets
• Dripping faucets: Even small drips add up
• Irrigation system: Check valve boxes and heads
• Water heater T&P valve: May be dripping into drain
• Underground pipe leak: Look for wet spots in yard

Quick test: Close the valve between your pressure tank and house plumbing. If the pressure gauge stays steady, the leak is in the house. If it still drops, the leak is between the well and that valve.

Cause #3: Pressure Switch Problems

Sometimes the switch itself is the problem. Pressure switch contacts can become pitted, corroded, or fouled with debris, causing erratic operation.

Pressure Switch Issues

• Pitted contacts: Arcing with each cycle eventually damages the contact surfaces
• Corroded contacts: Moisture and age cause corrosion
• Debris in sensing port: Blocks pressure reading
• Adjustment drift: Settings have shifted over time

The fix: Clean contacts with fine sandpaper, or replace the switch ($25-$50 for the part). Pressure switches are relatively easy to replace for those comfortable with electrical work.

Cause #4: Check Valve Failure

The check valve prevents water from draining back down the well when the pump stops. When it fails, water flows backward, pressure drops, and the pump must cycle again to re-pressurize.

Signs of check valve failure: Pressure drops steadily after the pump stops (watch the gauge), air spurts from faucets when first opened, clicking starts after the pump has been off a while.

The fix: Replace the check valve. For surface check valves, this is straightforward. For check valves at the pump (in the well), you'll need to pull the pump—a professional job.

Step-by-Step Diagnosis

Repair Costs by Cause

The good news: most clicking-related repairs are on the affordable end of well service. Here's what to expect:

The most important thing to remember: never ignore rapid clicking from your well system. A $400 pressure tank replacement today prevents a $3,000 pump replacement next month. Every rapid cycle damages the motor — the longer you wait, the more expensive the fix becomes.

When to DIY vs. Call a Professional

You can handle these yourself:

• Running toilet: Replace the flapper ($5-10 at any hardware store). This is the #1 hidden cause of pump cycling we see.
• Recharge tank air pressure: If the bladder is intact, use a tire pump on the Schrader valve. Set to 2 PSI below cut-in pressure (28 PSI for a 30/50 system, 38 PSI for a 40/60 system).
• Clean pressure switch contacts: Power OFF at breaker first. Open the switch cover, gently clean contacts with fine sandpaper or an emery board. This can buy you time, though heavily pitted contacts need replacement.

Call a professional when:

• The pressure tank bladder has failed (water comes from the Schrader valve) — tank needs replacement
• You've checked for leaks and recharging the tank doesn't help — the cause may be deeper in the system
• You're not comfortable working around 230V electrical components
• The clicking has been happening for days and the pump may already be damaged
• You suspect a check valve issue (pressure drops rapidly with pump off and nothing running)

We service all major pump brands including Franklin Electric, Grundfos, Goulds (Xylem), and Sta-Rite (Pentair). Our trucks carry common parts and components for same-day repairs.

Frequently Asked Questions