Well Pump Troubleshooting Guide

The #1 "no water" call we get in Anza Valley turns out to be a tripped 240V double-pole breaker. Storms over Thomas Mountain, voltage sags on long rural service drops, and aging breakers all cause nuisance trips.

• Open the main panel and look for a breaker labeled "Well" or "Pump." A tripped breaker sits between ON and OFF.
• Flip it fully OFF, then back ON. If it trips again immediately, stop — you likely have a shorted pump, motor, or drop cable. Don't keep resetting it.
• Check the gray disconnect box on the wall near the pressure tank or well head. Confirm the lever is up/ON.

Your pressure tank should have a small round gauge reading somewhere between 30 and 60 PSI when the system is healthy. A dead-zero gauge with the pump not running points at the pressure switch — the little gray box with two wires on a 1/4" tube near the tank.

• Burned, pitted, or stuck contacts inside the switch stop the pump from turning on even when pressure drops. Switches are a wear item and typically last 5–10 years out here.
• If the gauge reads normal pressure (say 50 PSI) but no water comes out of any tap, the gauge or switch tube is plugged with sediment — common on wells drawing through granite fractures around Cahuilla and Aguanga.

A waterlogged pressure tank is the second most common cause of short-cycling pumps and sudden "no water" events. The bladder inside fails, the tank fills with water, and the pump kicks on and off every few seconds until it burns out.

• Cut power at the breaker, open a tap to drain pressure, then press the Schrader valve on top of the tank. Air should hiss out. Water spraying out means a ruptured bladder — replace the tank.
• With the system drained, the tank's air pre-charge should read 2 PSI below your cut-in pressure (typically 28 PSI for a 30/50 switch).

Anza Valley wells frequently pull fine granite sand and iron sediment, especially after a heavy rain year recharges the fractured-rock aquifer. Sediment clogs the foot screen, check valve, or whole-house filter and starves the pump.

• Bypass any sediment filter or softener and re-test pressure at a hose bib upstream of treatment. If pressure returns, change the cartridge.
• Brown, gritty, or air-spitting water on the first draw is a classic sign the static water level has dropped near the pump intake — a real risk on shallower wells during late summer.

Stand at the well head with the system calling for water. You should hear a faint hum and feel slight vibration on the casing. Total silence with power confirmed at the disconnect means the motor, splice, drop cable, or control-box capacitor has failed. On 3-wire submersibles (most deep-set Anza pumps), the box-mounted start capacitor is a frequent culprit and a fast swap for a tech.