Well Pump Types: Submersible, Jet, and Hand Pumps Explained

Private water systems in the United States serve an estimated 43 million people across roughly 13 million households, according to the U.S. Environmental Protection Agency (EPA). The pump is the mechanical core of every such system, and selecting the correct type determines long-term reliability, energy efficiency, and regulatory compliance. This page describes the three primary pump categories — submersible, jet, and hand pumps — covering how each functions, when each applies, and how service professionals classify them for installation and repair work.

Definition and scope

A well pump is a pressure-generating device that moves groundwater from an aquifer or well casing to a distribution system at the surface. The National Ground Water Association (NGWA) recognizes pump type selection as one of the foundational decisions in private well system design, because pump class must match well depth, yield rate, and local geology.

Three classifications cover the vast majority of residential and light-commercial installations in the United States:

Submersible pumps — sealed motor-and-pump assemblies deployed below the water table inside the well casing.
Jet pumps — surface-mounted units that use a pressure differential (venturi effect) to draw water upward through a suction line.
Hand pumps — manually operated positive-displacement devices that require no electrical power.

Each type carries distinct installation depth limitations, energy demands, and maintenance profiles. Licensed well contractors operating under state-level water well construction codes must match pump type to well specifications before installation.

How it works

Submersible pumps are entirely submerged in the well bore, typically positioned above a sediment trap at the bottom of the casing. A hermetically sealed electric motor drives an impeller stack that pushes water upward through the drop pipe under positive pressure. Because the motor is cooled by the surrounding water column, submersible units tolerate continuous operation in deep wells. Standard residential submersible pumps are rated for well depths from 25 feet to over 400 feet, with 3-wire and 2-wire motor configurations distinguishing how the starting circuit is wired at the surface control box.

Jet pumps operate from a surface location and are subdivided into two types based on ejector placement:

Shallow-well jet pumps use a single-pipe suction line and are limited to lift depths of approximately 25 feet, constrained by atmospheric pressure physics.
Deep-well jet pumps lower the venturi ejector assembly into the well itself, connected by two pipes (a drive pipe and a return pipe), extending effective lift to approximately 90–120 feet depending on pressure rating.

The venturi mechanism recirculates a portion of pressurized water through a nozzle and throat, creating a low-pressure zone that entrains water from the aquifer. Jet pumps are less efficient than submersible units at equivalent depths; the U.S. Department of Energy (DOE) notes that submersible pumps generally consume less electricity per gallon delivered at depths beyond 25 feet.

Hand pumps use a piston-and-cylinder mechanism. Downward handle movement draws the piston up through a cylinder, creating suction that lifts water past a foot valve. Upward movement opens a discharge valve, releasing water to the spout. Cylinder placement determines effective lift; deep-well hand pumps place the cylinder below the frost line and below the static water level. Manufacturers such as Bison Pumps publish rated lift capacities aligned with NSF International standards for potable water contact materials.

Common scenarios

The service landscape assigns each pump type to characteristic installation contexts:

Submersible pumps are the dominant choice for new drilled wells deeper than 25 feet. They are standard in agricultural, rural residential, and geothermal loop applications. Repair scenarios typically involve motor failure, worn impellers, waterlogged pressure tanks, or drop pipe separation — faults addressed under well pump repair listings maintained in professional contractor directories.
Shallow-well jet pumps appear in applications drawing from shallow aquifers, cisterns, lakes, or ponds where the source is less than 25 feet below the pump location. They are common in older construction predating widespread drilled-well installation.
Deep-well jet pumps occupy a transitional niche: installations where well depth exceeds shallow-pump capacity but a surface-mounted unit is preferred for easier service access. They are less common in new construction but persist in retrofit situations.
Hand pumps serve off-grid residential properties, emergency backup systems, and developing-world water access programs. In the United States, they also appear in state and local emergency preparedness frameworks as backup water access devices when power is unavailable.

The directory purpose and scope of this resource reflects this distribution — submersible pump service requests constitute the majority of professional contractor volume nationally.

Decision boundaries

Pump selection is governed by four measurable parameters:

Static water level — the depth at which the water table stabilizes in the well casing at rest; determines whether a jet pump can physically lift water.
Well yield (gallons per minute) — the sustainable flow rate the aquifer delivers; must meet or exceed household peak demand (the NGWA recommends a minimum 1 gallon per minute for residential use).
Total dynamic head (TDH) — the sum of vertical lift, pipe friction losses, and system pressure requirements; the primary variable in pump horsepower selection.
Power availability — grid-connected versus off-grid status determines whether electric pump options are viable without supplemental generation.

Permitting requirements for pump installation vary by state. Most states regulate well construction under a water well construction code administered by a state environmental or natural resources agency (e.g., the California Department of Water Resources Well Standards or equivalent bodies in other jurisdictions). Licensed well drillers and pump installers are the regulated professional class authorized to perform pump-type changes in most states, requiring inspection and documentation of the pump model, depth, and wiring configuration.

Safety classification under the National Electrical Code (NEC), Article 680 and related sections, governs submersible motor wiring in wet environments. Ground fault circuit interrupter (GFCI) protection requirements apply to pump circuits per NEC standards. Jet pump installations in indoor mechanical spaces fall under applicable plumbing and mechanical codes administered at the state and local level.

For service professionals navigating pump-type classification in a repair or replacement context, the how to use this well pump repair resource section of this network describes how contractor listings are organized by service category.

References

📜 1 regulatory citation referenced · ✅ Citations verified Feb 25, 2026 · View update log