In our previous guide, we busted the myth that outdoor fountains use a lot of electricity. We established that they are efficient—but efficient doesn't mean free.
The next logical question for budget-conscious homeowners is: "How much does it cost to run an outdoor fountain in dollars and cents?"
The answer depends on the size of your pump and your local utility rates. In this breakdown, we will do the math for you, calculating the exact costs for electricity and water so there are no surprises on your next bill.
1. The Electricity Calculation Formula
You don't need a degree in engineering to figure this out. The cost is determined by this simple formula:
(Pump Wattage × 24 Hours × 30 Days) / 1000 = Total kWh per Month Total kWh × Your Electricity Rate = Monthly Cost
Let’s apply this to three common fountain sizes using an average US electricity rate of $0.15 per kWh.
Scenario A: The Small Garden Accent
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Typical Feature: A small birdbath or tabletop fountain.
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Pump Size: ~15 Watts.
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The Math: (15W × 720 hours) / 1000 = 10.8 kWh.
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Monthly Cost: ~$1.62
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Verdict: It costs less than a pack of gum.
Scenario B: The Medium Tiered Fountain
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Typical Feature: A classic 3-tier concrete fountain standing about 4-5 feet tall.
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Pump Size: ~60 Watts.
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The Math: (60W × 720 hours) / 1000 = 43.2 kWh.
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Monthly Cost: ~$6.48
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Verdict: Less than a single sandwich.
Scenario C: The Grand Estate Centerpiece
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Typical Feature: A massive large outdoor fountain
with a pool basin and heavy water flow. -
Pump Size: ~150 Watts.
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The Math: (150W × 720 hours) / 1000 = 108 kWh.
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Monthly Cost: ~$16.20
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Verdict: Comparable to a standard video streaming subscription.
Note: These calculations assume running the fountain 24/7. If you use a timer, cut these costs in half.
2. The Hidden Cost: Water and Evaporation
Electricity isn't the only utility involved. You also pay for water. Unlike a lawn sprinkler that dumps water into the ground, a fountain recycles water. You only pay for what is lost to evaporation.
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Evaporation Rate: In hot summer months, a medium fountain might lose 1-2 gallons of water per day due to heat and wind.
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The Cost: Water is incredibly cheap. 1,000 gallons of tap water typically costs $2-$5. Even if you top off your fountain daily, the added cost to your water bill is usually less than $1.00 per month.
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Leak Warning: If your water bill spikes, it’s not evaporation—it’s a leak. Check your basin for cracks immediately.
3. Cost-Saving Tips
If you want to enjoy the ambiance of stone outdoor fountains while keeping costs at absolute zero, consider these tips:
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Reduce Splash: Adjust the pump flow so water doesn't splash out of the bowl. Splashing wastes far more water than evaporation.
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Solar Options: For smaller locations, solar outdoor fountains
have zero running costs, though they sacrifice night-time operation. -
LED Lights: If your fountain has lights, ensure they are LED. Old halogen bulbs can actually use more power than the pump itself!
Conclusion
How much does it cost to run an outdoor fountain? For most homeowners, the total operating cost (electricity + water) will sit between $5 and $10 per month.
It is a small price to pay for the relaxation, wildlife support, and visual beauty that a water feature brings to your home.