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Hand pumps come in several designs, but for moving stored rainwater or other clean water, the three most common practical types are pitcher pumps, deep-well piston pumps, and rotary hand pumps. They all move water by hand, but they work differently and suit different tank depths, pipe layouts, and uses.
1. Pitcher Pumps
A pitcher pump is the familiar lever-operated pump with a curved spout. Pulling the handle up and down moves a piston inside the pump. This creates suction that draws water through an inlet pipe.
Pitcher pumps are commonly used with:
- Rain barrels
- Above-ground tanks
- Shallow cisterns
- Shallow wells
- Garden water systems
The important limit is suction height. A surface-mounted hand pump cannot pull water from an unlimited depth. In real installations, suction pumps generally work best when the vertical lift from the water surface to the pump is relatively small.
The theoretical limit for lifting water by suction at sea level is about 34 feet, but real pumps cannot reach that under normal conditions. Friction, elevation, air leaks, valves, temperature, and pump design reduce the usable lift. Many pitcher-style pumps are intended for much shallower lifts.
Always follow the pump manufacturer's rated suction lift.
Advantages
Pitcher pumps are:
- Simple
- Easy to operate
- Usually easy to maintain
- Well suited to tanks located close to the pump
- Able to work without electricity
They can be a practical backup for an above-ground rainwater tank.
Limitations
They need an airtight suction line. Even a small air leak can stop the pump from drawing water properly.
Some designs also need to stay primed. Priming means filling the pump and part of the suction line with water so the pump can create enough suction to begin lifting water.
A check valve or foot valve may also be needed, depending on the pump design. These valves help keep water from draining backward when pumping stops.
2. Deep-Well Piston Pumps
A deep-well hand pump also uses a handle and piston, but the pumping mechanism is placed farther down the pipe, often below the water level.
Instead of trying to pull water a long distance using suction, the lower pump cylinder pushes water upward through the discharge pipe.
This makes the design suitable for greater vertical lifts than a basic pitcher pump.
Deep-well hand pumps are more commonly associated with wells, but similar pumping principles can also be used for:
- Underground cisterns
- Buried rainwater tanks
- Large storage systems
- Remote water systems
Advantages
A deep-well design can move water from depths that a normal surface suction pump cannot handle.
Because the working cylinder is located near or below the water, it does not depend entirely on surface suction.
Limitations
Installation is more involved.
The system may require:
- Pump rods
- Drop pipe
- A submerged pump cylinder
- Correct pipe sizing
- Secure mounting
- Access for maintenance
Removing and servicing these parts can also be harder than repairing a simple pitcher pump.
For a buried cistern, access safety matters as well. Do not enter a tank or confined space to install or repair a pump. Tank entry can involve serious atmospheric and structural hazards.
3. Rotary Hand Pumps
A rotary hand pump uses a hand crank rather than an up-and-down lever.
Turning the handle rotates an internal pumping mechanism. Depending on the design, that mechanism may use gears, vanes, or another positive-displacement system to move water.
Rotary pumps are often useful for transferring water between containers.
For example, one may be installed on:
- A drum
- A barrel
- An IBC tote
- A storage tank with a suitable opening
They are often better suited to transfer jobs than supplying an entire plumbing system.
Advantages
Rotary pumps can provide a fairly steady flow as the handle turns. Some models also mount directly to drum or tank fittings, which can make them convenient for transferring stored water.
Limitations
Compatibility matters.
Check the pump's:
- Inlet connection
- Outlet connection
- Mounting thread
- Maximum lift
- Recommended fluids
- Materials
- Flow direction
A pump designed for oils, fuels, or chemicals should not automatically be assumed suitable for rainwater.
If water will be used for drinking-water applications, every wetted component needs to be appropriate for that intended use as part of the complete treatment and storage system.
Comparing the Three Hand Pump Types
| Hand pump type | How it works | Best suited to |
|---|---|---|
| Pitcher pump | Surface piston creates suction | Rain barrels, shallow tanks, shallow water sources |
| Deep-well piston pump | Lower cylinder pushes water upward | Deep tanks, underground cisterns, wells |
| Rotary pump | Crank turns an internal pumping mechanism | Drums, barrels, tanks, and water transfer |
For a suitable hand-operated water pump, first evaluate control settings for the expected draw and pipe layout.
The main difference is not simply the shape of the handle. It is where the pumping action happens and how the pump lifts the water.
Which Type Works Best for Rainwater Storage?
For a typical above-ground rainwater tank, a pitcher-style pump is often the simplest option if the pump is close enough to the water level and the suction pipe can remain airtight.
For a deep or buried cistern, a pump designed to operate with the pumping cylinder lower in the system may be more appropriate.
A rotary pump can be useful when the goal is simply to transfer water from a barrel or tote into buckets, watering cans, or another container.
Before choosing any hand pump, check five things:
- Vertical lift: Measure from the water surface to the pump, not simply from the tank floor.
- Connection size: Confirm that the pump and tank fittings can actually connect.
- Required flow: Filling a watering can needs much less flow than supplying several fixtures.
- Water quality: Sediment can wear or jam some pumps.
- Intended use: Irrigation water and drinking water have very different system requirements.
Hand Pumps Do Not Treat the Water
A hand pump only moves water. It does not make collected rainwater clean or safe to drink.
Roof runoff can contain dust, bird droppings, microorganisms, roofing debris, metals, and other contaminants. A pump does not remove these hazards.
For garden irrigation or other non-potable uses, treatment needs may be fairly simple depending on the application.
Non-potable means water that is not intended for drinking.
If rainwater is intended for drinking, the complete system needs to be evaluated. That can include suitable collection surfaces, debris control, first-flush management, storage, treatment stages, current laboratory testing, maintenance, and applicable local requirements.
Common Hand Pump Problems
Hand pumps are mechanically simple, but several problems can stop them from working.
Air Leaks
A suction pump needs an airtight inlet pipe. Loose fittings or damaged seals can allow air in and prevent the pump from lifting water.
Lost Prime
Some surface pumps lose their prime after sitting unused or after the inlet pipe drains.
Blocked Intake
Leaves, sediment, insects, or tank debris can restrict the inlet.
A suitable intake screen or prefilter can help, but it still needs regular cleaning.
Worn Seals
Piston cups, O-rings, seals, and valves eventually wear. Symptoms may include weak flow, difficulty priming, or water draining backward.
Too Much Lift
A perfectly good pump may appear faulty if it is installed higher above the water than its design allows.
Remember that the water level in a tank changes. A pump that works when a cistern is full may struggle when the water level drops significantly.
Consider Freezing Conditions
Hand pumps and exposed pipes can be damaged when trapped water freezes.
In freezing climates, the system needs a way to prevent vulnerable sections from remaining full of water during cold weather. The correct approach depends on the pump design, pipe layout, burial depth, and local climate.
Do not assume that simply wrapping the pump with insulation will prevent freeze damage.
Frequently Asked Questions
What are the three main types of hand pumps?
For typical water-moving applications, three common types are pitcher or shallow-well pumps, deep-well piston pumps, and rotary hand pumps. Other specialized designs, including diaphragm pumps, also exist.
Can a hand pump be used on a rain barrel?
Yes. A suitable hand pump can move water from a rain barrel without electricity. Check the pump's connection size, allowable suction lift, mounting requirements, and compatibility with water.
How high can a hand pump lift water?
It depends on the design. Surface suction pumps have a strict physical limit and usually work at much lower lifts than the theoretical maximum. Deep-well pumps place the pumping mechanism lower in the system and can handle greater lifts. Use the manufacturer's rated lift rather than assuming a universal number.
Does a hand pump need a check valve?
Some do. A check valve allows water to travel in one direction and helps prevent it from flowing backward. Pitcher and suction systems may use a foot valve or check valve to help keep the suction line primed. Follow the pump's installation requirements.
Can a hand pump pressurize a house?
Most simple hand pumps are intended to move water rather than maintain normal household plumbing pressure. Supplying household fixtures may require a pressure tank, controls, suitable piping, and a pump system designed for that purpose.
Can a rotary pump be attached to an IBC tote?
Sometimes. The tote outlet, pump inlet, adapters, thread types, and mounting arrangement must be compatible. IBC outlets are not all identical, so identify the actual valve and thread before buying adapters.
Does pumping rainwater make it safe to drink?
No. A hand pump only moves the water. Drinking-water use requires suitable collection, storage, treatment, testing, maintenance, and compliance with applicable local requirements.
