Deep Well Pump

A deep well pump is designed to draw water from depths of 25 feet or more. Many models will cope quite easily with depths in excess of 300 feet. Farmers and those living in rural areas are often dependent upon these pumps to supply them with all their water needs.

Deep Well Pump Installation

Unlike jet pumps for shallow wells, which sit above ground and rely on suction to draw water, deep well pumps are submersible.  Submersible means that they are installed below the water level in the bore hole shaft and propel water upwards via a series of stacked impellers. These types of pumps are not designed to run continuously, but pump intermittently according to the pressure levels in the water storage tank.

What to Look For

There are a number of determining factors which should influence the choice of deep well pump model. These include water usage requirements or volume, the capacity of the well, and the lift required to deliver water at a given pressure. As these pumps are difficult to access for servicing and repairs, durability and long life are essential features.

Volume

The volume of water delivered is usually measured in gallons per minute or GPM. Retailers may also use GPH or gallons per hour in product descriptions. An average domestic household will require approximately 10 GPM. In industrial or agricultural settings, for example for irrigation purposes, pumps will be required to deliver somewhere upwards of 20 GPM.

Capacity

The capacity of the pump should not exceed the capacity of the well to deliver the required flow. Over-pumping can cause water levels to drop. If the motor is forced to run dry for any appreciable length of time it can result in overheating and cause considerable damage. A driller's log should supply the necessary flow information.

Lift

It is important to choose a model with an adequate power rating to meet lift requirements. Using a pump curve graph to calculate this is advisable. However, it should be expected that the greater the height or 'lift' of water, and the greater GPM required, the more powerful the motor will have to be. Typically, a power rating of approximately 1 horse power is required to supply a 10 GPM flow from a depth of 300 feet.

Durability

Both casing and component materials must have good corrosion resistance. Stainless steel, bronze alloys, thermoplastics and hydro-glass are all corrosion resistant. Water with high levels of sand can also be problematic and shorten the life of pumps. Models with effective intake screens and which feature floating impeller stacks are much better equipped to withstand sand.

Life

Excessive cycling, or cutting in and out, can also shorten the life of pumps. Ensuring the water storage tank is in good condition and that pressure levels are correctly set can prevent excessive cycling.

Manufacturers with established reputations include Goulds, Grundfos, Myers, Craftsman, Sta-rite, Wayne and Flotec. Before purchasing a deep well pump it is advisable that buyers gain a thorough understanding of their water requirements and the capacity of their well to deliver these. Well drillers and reputable suppliers should be happy to offer advice. High quality pumps should deliver many years of service without need of constant repair.

Browse our selection of Deep Well Pumps fulfilled by our retail partner Amazon.com:

1/2 HP 115v Submersible Well Pump with Built-in Motor. For Deep Well, Lake, or Cistern. (Tuhorse) List Price: $223.75 Sale Price: $179.00 You save: $44.75 (20%) See Reviews For This Product

Description * Complete pump and motor all in one unit. * 115V 60 Hz, 1/2 (0.50 HP), 3450 RPM, 2 wires motor. Does not require a control box. * Stainless Steel pump body and shaft. * 1-1/4 inch Discharge. * 4 Stages... Features Stainless steel casing and shaft. 1-1/4" Discharge. Built-in check-valve. Pump water up to 120 feet free flow or 60 feet in a system with a pressurized tank. Fits 4" or larger wells, or use in lake and cistern environments 4 stages. Rated at 15 GPM and 23 GPM max. Two wire, 115V, built in motor and doesn't require a control box!

Wayne CWS100 1-Horsepower Cast Iron Convertible Well Jet Pump List Price: $367.20 Sale Price: $240.00 You save: $127.20 (35%) See Reviews For This Product

Description CWS100 Features: -Cast-iron convertible well jet pump.-For wells 0'' - 1080'' in depth.-Pressure switch is pre-set at 30-50 PSI for automatic operation.-Dedicated priming port for volute filling.-Durable cast-iron volute... Features Pumps up to 560-Gallon per hour Dual voltage (120-240-Volt) high efficiency square flanged motor is factory wired for 120-Volt. Dedicated priming port for volute filling Durable cast iron volute 3/4-Inch NPT discharge with 1-1/4-Inch discharge and 1-Inch drive

Wayne ESP25 12-Volt 3300 Gallons Per Hour Battery Back Up Sump Pump System List Price: $294.23 Sale Price: $199.00 You save: $95.23 (32%) See Reviews For This Product

Description The Wayne emergency backup sump pump moves up to 3300 GPH, 2300 GPH @ 10ft. lift and helps to protect your property when a storm knocks out power or when the main sump pump fails. U.S.A. Flow (GPH): 3,300, Volts: 12, Discharge Port (in... Features 2300-Gallons per hour at 10-feet of lift Corrosion resistant thermoplastic construction Alarm sounds to notify you when the backup system is active Requires one 40-ampere hour or one 75-ampere hour battery 1-Year limited warranty

Wayne T51S10-4 1/2-Horsepower 2-Wire 115-Volt Deep Well Submersible Pump List Price: $390.08 Sale Price: $310.77 You save: $79.31 (20%) See Reviews For This Product

Description This Wayne 4in. deep well submersible delivers 10 gallons of water per minute for most residential needs. Submersible design eliminates the need for priming and creates quiet operation. Motor is hermetically sealed and contains built-in lighting protection... Features Pumps up to 434-Gallon per hour at 60-Feet depth (50 PSI) High quality Franklin motor Submersible 4-Inch design for easy installation and quiet operation 2 Wire pumps contain 2 wires plus the ground Wire and do not require a control box for operation

Little Giant SUB12G05H2W2V Submersible Well Pump, 1/2-HP 12-GPM 2-Wire 230-Volt List Price: $445.00 Sale Price: $263.99 You save: $181.01 (41%) See Reviews For This Product

Description 4" submersible deep well pump. Ideal for use in 4" I.D. or larger wells from depths of 100 feet. Powered by 2-wire, Franklin Electric motor. Hex rubber bearing with extra large surface assures shaft stability and multiple flow channels keep small particles such as sand away from bearing surfaces... Features Ideal for 4-inch I.D. or larger wells Designed for residential or agricultural water systems Built-in check valve, 12 gpms Powered by the Franklin Electric motor, built-in suction screen Good shaft stability and multiple flow channels