Submersible & Jet Pump Repair

The two systems, briefly

Submersible pumps sit down inside the well casing, below the water line, and push water up to the surface. They're the standard for most modern wells deeper than roughly 25 feet because pushing water is far more efficient than trying to pull it up from depth. Jet pumps sit above ground — typically in a basement, utility closet, or well house — and use suction to draw water up through a single line (shallow-well jet pumps, effective to about 25 feet of lift) or two lines with a venturi at the bottom of the well (deep-well jet pumps, usable to roughly 100-120 feet, with declining efficiency as depth increases).

Repairable issues on submersible systems

• Failed or corroded wire splice at the pitless adapter — a common point of failure that doesn't require replacing the pump itself
• Check valve failure causing the pump to lose prime or cycle excessively
• Control box issues on 3-wire systems (start/run capacitors, relay) — often repairable separately from the submersible motor
• Torque arrestor or cable damage from age rather than motor failure

Repairable issues on jet pump systems

• Lost prime — often fixable by re-priming rather than replacing anything
• Worn impeller or diffuser inside the pump housing, replaceable without swapping the whole unit
• Failed foot valve at the bottom of the drive pipe, causing the pump to lose prime repeatedly
• Worn drive belt or motor bearings on older belt-driven units
• Pressure switch or relief valve issues, which mimic pump failure but aren't the pump at all

When repair stops making sense

Once a submersible motor's windings have failed or a jet pump's motor bearings are shot, further repair usually costs close to what a full replacement would, without extending the system's life much — at that point we'll tell you plainly that replacement is the better value rather than stringing along a series of small repairs.