How much does a well pump cost per month in Washington?

About $6.67 a month, assuming 1,000 W, 1.5 hours a day, 365 days a year at 14.63¢/kWh.

How many kilowatt-hours does a well pump use?

Roughly 548 kWh a year under these assumptions, or 1.00 kWh for every hour it runs.

Is that expensive compared with other states?

Washington has the 12th cheapest average residential rate in the country, so this appliance costs less here than the U.S. average of $99.43 a year.

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Cost to run a well pump in Washington (August 2026 rates)

At 14.63¢ per kilowatt-hour — Washington's average residential price in August 2026 — running a well pump costs $80.10 a year. That is 19% less than the national average of $99.43. Washington's residential rate is up 7.2% from August 2025, which moves this appliance from $74.73 to $80.10 a year.

Per hour: 14.6¢
Per day of use: 21.9¢
Per month: $6.67
Per year: $80.10

Assumption: 1,000 W, 1.5 hours a day, 365 days a year — 548 kWh a year. A 1/2 to 3/4 HP submersible pump running about 90 minutes a day for an average household's water use. Use the calculator to swap in the numbers from your own model.

How Washington compares

Washington pays 14.63¢/kWh, the 12th cheapest residential electricity of the 51 U.S. jurisdictions EIA reports. For this appliance that works out to $19.33 less a year than the typical U.S. household pays for the same use. Running the same well pump costs $69.64 a year in Nevada and $258 in Hawaii, so where you live changes this bill by $189 a year.

State	Rate	Per month	Per year
Mississippi	14.43¢	$6.58	$79.00
Wyoming	14.43¢	$6.58	$79.00
Washington	14.63¢	$6.67	$80.10
Oklahoma	14.82¢	$6.76	$81.14
North Carolina	14.95¢	$6.82	$81.85

States ranked by average residential price, cheapest first. See all 51 states for a well pump.

What else costs about the same in Washington

Dehumidifier$79.00 a year in WA Gaming pc$85.44 a year in WA Aquarium$86.51 a year in WA

Cutting the number down

A waterlogged pressure tank makes the pump short-cycle, which is hard on the motor and shows up on the bill.
A running toilet or dripping outdoor spigot runs the pump all night; leaks are the usual explanation for a sudden jump.

Questions

How much does a well pump cost per month in Washington?: About $6.67 a month, assuming 1,000 W, 1.5 hours a day, 365 days a year at 14.63¢/kWh.
How many kilowatt-hours does a well pump use?: Roughly 548 kWh a year under these assumptions, or 1.00 kWh for every hour it runs.
Is that expensive compared with other states?: Washington has the 12th cheapest average residential rate in the country, so this appliance costs less here than the U.S. average of $99.43 a year.