Well Pump

A well pump is the pump that draws water from a private well and delivers it under pressure to a home's plumbing system. In the U.S., approximately 13 million households rely on private wells — and the well pump is the heart of every one of those systems. Unlike municipal water (which arrives under utility pressure), private well homes depend entirely on their pump and pressure tank to maintain water supply.

Types of well pumps

• Submersible pump (most common for deep wells): a cylindrical motor and pump assembly that drops into the well casing and operates submerged in the water. Submersible pumps are standard for wells deeper than 25 feet — which is most modern drilled wells (typically 100–400 feet deep). Submersible pumps are efficient, quiet (operating underground), and have long service lives (15–25 years).
• Jet pump (shallow well): a pump installed above ground that uses jet action to draw water up from shallow wells (under 25 feet for a shallow-well jet pump; up to 100 feet for a deep-well jet pump). More accessible for service but noisier and less efficient than submersible pumps.
• Hand pump: a manual backup option for emergency use or off-grid installations.

Signs of well pump problems

• No water from any fixture (pump failure or dry well)
• Air spitting from faucets (pump drawing air — low water table or pump positioned too high)
• Pressure fluctuations or rapid cycling (pressure tank issue, but pump may also be undersized)
• Dirty or discolored water (sand infiltration — check pump screen)
• High electric bills without other explanation (pump running continuously due to leak or failing check valve)

Cost

Submersible pump replacement costs $800–$2,500+ depending on depth and pump horsepower. The pump is retrieved by a well service company via the drop pipe — not a DIY job for wells over 25 feet deep. Surface jet pump replacement: $300–$800. Annual well inspections cost $100–$200 and catch problems early.