Choose a Well Hand Pump by Pumping Water Level, Casing Clearance and Required Pressure

The number that separates a shallow suction pump from a deep-well hand pump is the vertical lift from the water surface, not the total drilled depth. More precisely, selection must account for the lowest credible water level while pumping. A 300-foot well with water standing 18 feet below the pump may suit a suction pump; a 60-foot well whose water falls to 35 feet while pumping will not.

Also check whether the equipment will fit through the well’s tightest opening, how much water it delivers per stroke and whether it must discharge into a bucket or pressurize household plumbing.

Pitcher pump or deep-well hand pump?

Arrangement	Pumping mechanism	Appropriate use	Main limitation
Shallow-well pitcher or suction pump	Above ground	Water stays within the model’s rated suction lift	About 25 vertical feet is a common screening limit at sea level; actual capability can be lower
Deep-well cylinder pump	Submerged in the well and operated by rods from the surface	Water is below practical suction lift	More components, suspended weight and casing-clearance requirements

A pitcher pump does not pull water up directly. Its piston lowers pressure in the suction pipe, allowing atmospheric pressure to push water upward. This mechanism imposes a hard lift limit. USGS describes above-ground jet pumps as shallow-well equipment for depths of 25 feet or less (USGS). Elevation, pipe friction, air leakage and drawdown reduce the useful margin, so 25 feet is not a guaranteed operating depth.

A deep-well hand pump places its positive-displacement cylinder below water. The handle moves a piston and check valves through a rod string, lifting water through the drop pipe without relying on surface suction for the full lift.

A pitcher pump also normally needs a nonreturn valve—often a foot valve—to retain prime. Before buying one for an existing installation, see which water well pumps need a foot valve.

Measure the well before ordering

Static and pumping water levels

Static water level is the distance from a reference point at the wellhead to the water while the well is at rest. It is not the same as total well depth.

Pumping lowers the water level, and seasonal conditions, drought and nearby withdrawals can lower it further. USGS notes that a well begins drawing air when water falls below the pump intake (USGS). Select against the lowest credible pumping level, not just a measurement taken after a wet season. If the supply has been weakening, investigate signs of a well drying up before adding equipment.

A deep-well cylinder needs to remain submerged, but its installation depth is model- and site-specific. For example, Bison says it typically places its cylinder about 20 feet below static water, then adjusts for fluctuation, distance from the well bottom and clearance from an existing submersible pump (Bison Pumps). Follow the selected manufacturer’s layout rather than applying that 20-foot figure universally.

Casing and choke-point clearance

Record:

• casing inside and outside diameter, material and condition;
• pitless-adapter position and clear passage beside it;
• existing drop pipe, cable, guides and other obstructions;
• submersible-pump depth;
• casing height and well-cap arrangement.

Nominal casing size does not prove that another pump will pass. The tightest obstruction controls. In one current system, for example, the available cylinders require approximately 1.6, 1.8 or 2.5 inches of unobstructed passage. Its manual also warns that guides on an existing pump can block the route (Simple Pump installation manual). Those dimensions apply only to the cited models.

A side-by-side installation is therefore a complete configuration job, not just a pump-head purchase. The hand pump needs its own cylinder, rods and drop pipe while avoiding interference with the electric system.

Match output and effort to the job

Decide whether the pump will fill a few drinking-water containers during outages, water livestock every day or operate household fixtures. Compare output per complete stroke at the intended lift, not an unqualified gallons-per-minute claim.

A larger cylinder moves more water per stroke but requires more handle force. A smaller cylinder is easier to operate at a deep lift but takes more strokes. One Bison system illustrates the tradeoff:

Cylinder diameter	Output per stroke	Approximate full strokes per US gallon
1.5 in.	4 oz.	32
2 in.	8 oz.	16
2.5 in.	12 oz.	11
3 in.	20 oz.	7

These are figures for that product family, not general cylinder ratings (Bison owner’s manual). Ask the supplier for output and operating force at the actual water level.

Bucket delivery is not household pressure

Pumping from the well into an open bucket is easier than charging a pressure tank. Pressure adds head: 1 psi equals about 2.31 feet of water, so 40 psi adds roughly 92 feet to the lift. A pump that can discharge at ground level from a given water depth may not be able to supply useful flow against household pressure.

Simple Pump, for example, states its maximum hand-pumping depth for discharge at ground level and ambient pressure; its sizing guidance adds water depth and pressure head when evaluating the load (Simple Pump). Treat any advertised maximum depth the same way: confirm the discharge condition behind the rating.

For household connection, obtain the manufacturer’s complete diagram. Verify the pump pressure rating, check-valve arrangement, gauge, hose or pipe rating, isolation method and compatibility with the existing pressure tank. A threaded spout alone does not establish that a pump is pressure-capable.

Potable water, sealing and freezing

For drinking water, request product-level certification or compliance documents for all wetted components rather than relying on terms such as “food grade.” Material name alone is not enough. A 2026 study of selected hand-pump parts found that its tested stainless-steel alternatives met the NSF 61 leaching and NSF 372 lead-content criteria, while the tested lead-containing galvanized spouts and leaded brass taps did not (PLOS Water). The study does not certify every stainless-steel product; it demonstrates why the specific part matters.

The replacement cap or adapter must also maintain the well’s sanitary closure and venting. USGS says a well cap keeps out debris, insects and small animals, while a pitless adapter maintains a sanitary, frost-protected underground connection (USGS). Adding a hand pump should not create a route for runoff into the well.

“Freeze-proof” needs a model-specific explanation. Some pumps use a prescribed weep hole or drain-back arrangement so the exposed water column empties after use. A pressurized setup may need a different arrangement because it must retain water and pressure. Do not improvise a drain hole; use the instructions for the exact pump and climate.

Treat installation as well work

Opening a well introduces electrical, lifting and sanitation risks. Rod and pipe strings become heavy, and an existing submersible circuit may need to be disconnected. The cited Bison and Simple Pump manuals both call for two people. Bison recommends a licensed well installer and mechanical lifting where suspended weight is substantial; Simple Pump recommends professional installation for deeper sets and configurations requiring the existing pump assembly to be lifted (Bison, Simple Pump).

Requirements vary by jurisdiction. EPA provides a directory of state private-well programs; ask the relevant authority whether the work requires a permit or licensed installer. Follow local disinfection, flushing and testing rules after opening the well. Minnesota guidance, for example, requires disinfection when a well is opened for repair and advises a coliform test afterward (Minnesota Department of Health). Do not copy another state’s chlorine procedure without checking local requirements.

Ordering worksheet

Give the supplier or installer:

1. Intended use: emergency containers, daily outdoor use or household pressure.
2. Total well depth and documented static water level.
3. Lowest seasonal or pumping water level known.
4. Casing dimensions, material, condition and height.
5. Pitless-adapter type and measured choke-point clearance.
6. Existing pump, pipe, wire and obstruction layout.
7. Required daily volume and acceptable strokes per gallon.
8. Required outlet pressure and elevation above the wellhead.
9. Winter conditions and the approved drain-back method.
10. Potable-water certification, replacement-seal availability and service procedure.

If several measurements are unknown, obtain the well record and an onsite assessment before choosing. The suitable hand pump is the one whose cylinder remains submerged, whose components fit through the actual well and whose operator can produce the required water against the combined lift and discharge pressure.