How much does it cost to run a well pump?
A well pump is an electrical device that draws water from underground and pressurizes it into your home's plumbing system. Unlike municipal water users, homeowners with wells bear the full electricity cost of moving water on demand, which depends heavily on how often household members shower, do laundry, and irrigate.
Well Pump running cost calculator
- Per day
- $0.34
- Per month
- $10.34
- Per year
- $124.10
- CO₂ / year
- 292 kg
Based on 730 kWh per year. Adjust the price per kWh to match your latest electricity bill for an exact figure.
At 1000 watts used 2 hours a day, a well pump costs about $0.34 per day, $10.34 per month and $124.10 per year on an average rate of 17¢ per kWh — roughly 730 kWh and 292 kg of CO₂ over a year. Enter your own electricity rate and usage in the calculator above for a figure matched to your bill.
Well pumps operate on a duty cycle: they run only when water pressure in the tank drops below a threshold, then shut off once pressure builds back up. This means your actual operating hours depend entirely on household consumption patterns. A family that uses water constantly will cycle the pump frequently, while a household with minimal use might have the pump run only a handful of times daily. Understanding this on-demand behavior is key—efficiency savings come not just from choosing a better pump, but from reducing unnecessary water waste.
The depth of your well and the pump's design significantly influence energy consumption. Deep wells require more pressure to lift water to the surface, and pumps optimized for deep wells operate differently than shallow-well models. If your well is exceptionally deep or your home sits at high elevation, the pump works harder and consumes more electricity per gallon delivered. Submersible pumps (submerged at the bottom of the well) tend to be more efficient than jet pumps (sitting above ground) because they don't fight gravity as hard. When replacing an old pump, confirming the well depth and choosing the right pump type for your specific conditions can yield meaningful savings.
A well pump's efficiency rating is measured in gallons per minute (GPM) relative to electrical input. Newer variable-speed and smart-pressure pumps can reduce runtime significantly compared to fixed-speed models, particularly in low-demand periods. A variable-speed pump slows down instead of cycling on and off repeatedly, keeping water pressure steady with less electricity. These come at a higher upfront cost, but for households where the pump currently runs many short cycles per day, the operational savings over 10–15 years can offset that premium.
Common mistakes that inflate well pump costs include over-pressurizing the system (which forces the pump to work harder to reach a high pressure threshold), neglecting tank maintenance (a waterlogged pressure tank loses its air cushion and forces the pump to cycle excessively), and ignoring leaks (a small dripping faucet or running toilet will cause the pump to cycle continuously, wasting electricity). A properly maintained pressure tank and a periodic inspection for leaks are low-cost habits that directly reduce how often your pump runs.
Selecting an efficient well pump means matching capacity to your household's actual peak demand. Oversizing the pump doesn't save money—it simply means faster cycling or unnecessary pressure generation. Work with a qualified well pump installer to determine your home's gallop-per-minute requirement at peak usage (usually during morning showers or laundry day), then choose a pump rated for that demand. Efficiency databases and manufacturer specifications now often include power consumption data; comparing wattage across models of similar capacity gives a realistic picture of long-term operating costs.
Frequently asked questions
- Why does my well pump seem to run constantly, even when I'm not using water actively?
- Constant cycling usually points to a pressure tank that has lost its air charge (allowing pressure to drop more frequently), a leak in the plumbing or pressure tank itself, or a faulty pressure switch. A waterlogged tank forces the pump to work harder to maintain pressure, so it starts and stops more often. Have the tank inspected and recharged if needed, and check for even small leaks—a single dripping fixture can cycle the pump dozens of times per day.
- How do I know if my well pump is undersized for my household?
- Signs include low water pressure during simultaneous uses (showers and dishwasher running together), the pump running almost continuously, or the pressure tank draining quickly. If you notice water pressure dropping noticeably when multiple fixtures run, the pump may not supply enough gallons per minute for your household's peak demand. An undersized pump will run longer and more often, raising energy costs significantly.
- What's the difference between a submersible and a jet pump, and which is more efficient?
- A submersible pump sits inside the well casing, suspended below the water surface, and pushes water upward. A jet pump sits above ground and draws water up through a pipe. Submersible pumps are generally more efficient because they work with gravity and use less energy to lift water. Jet pumps are common in shallow wells but waste more energy fighting gravity and prime cycles. For deep wells, submersible is almost always the better efficiency choice.
- Will a variable-speed pump really save money compared to my current fixed-speed pump?
- Yes, if your current pump cycles on and off frequently. Variable-speed pumps slow down instead of stopping, reducing electricity use during light-demand periods and keeping pressure steady without hard starts. They cost more upfront, but over 10–15 years, the reduction in runtime and cycling wear often justifies the investment, especially in larger households where the pump would otherwise cycle many times daily.
- How often should I have my well pump serviced to keep it running efficiently?
- Annual inspection is recommended. A professional can check the pressure switch settings, verify tank air charge, inspect the pump for wear, and confirm water quality hasn't deteriorated. Keeping the system properly maintained—particularly the pressure tank—prevents the excessive cycling that wastes electricity. Early detection of small problems also prevents emergency breakdowns when water demand is highest.
- Does water heater usage affect my well pump's electricity costs?
- Yes, indirectly. Water heating uses electricity (or fuel), but more hot water demand means more cold water drawn from the well, so the pump runs more. Reducing hot water consumption through shorter showers or fixing dripping hot water lines saves both water heating and well pump energy. The pump cost is tied directly to how many gallons per day you pull from the well.