Leak Detection Savings Calculator

Enter your leak type, pipe pressure (PSI), break size, and cost of treated water to find out exactly how much water and money your leak is wasting. The Leak Detection Savings Calculator returns gallons lost per minute, gallons lost per day, annual water loss, and estimated annual cost — so you can see the real financial case for fixing that leak.

inches

Used for Circular Break and Hole in Pipe types

inches

Used for Circular and Rectangular break types

feet

Used for Rectangular Break Along Pipe only

PSI

Check your water bill for this rate. Leave at 0 to skip cost calculation.

Results

Estimated Annual Cost of Leak

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Gallons Lost Per Minute

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Gallons Lost Per Day

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Gallons Lost Per Year

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Daily Cost of Leak

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Water Lost Over Time (Gallons)

Frequently Asked Questions

How does this calculator estimate gallons lost from a pipe leak?

The calculator uses hydraulic flow formulas based on the size and shape of the break and the pipe pressure (PSI). For a circular or hole-type break, it calculates the orifice area and applies Torricelli's theorem to estimate flow rate. Rectangular breaks use a length-and-width area with the same pressure-driven flow principle.

What is a typical PSI for a residential water pipe?

Most residential water systems operate between 40 and 80 PSI, with 60 PSI being a common default. You can check your home's water pressure with an inexpensive gauge attached to an outdoor hose bib.

How do I find the cost of treated water per 1,000 gallons?

Look at your most recent water utility bill. It will show your total usage in gallons or CCF (hundred cubic feet) alongside the total charge. Divide the total cost by usage (converted to thousands of gallons) to get your rate per 1,000 gallons.

What is the difference between a circular break, rectangular break, and hole in pipe?

A circular break is a round opening (like a crack that forms a circle) and is defined by its diameter. A hole in pipe is similar but typically refers to a puncture, also defined by diameter. A rectangular break is an elongated split along the pipe defined by its length and width.

How much water can a small leak actually waste?

Even a tiny 0.1-inch circular break at 60 PSI can lose hundreds of gallons per day. A 0.5-inch break at the same pressure can waste thousands of gallons daily, adding up to hundreds of thousands of gallons per year — and hundreds to thousands of dollars in water costs.

Can I use this calculator for commercial or municipal pipe leaks?

Yes. Simply enter the pipe pressure and break dimensions that match your system. Commercial and municipal systems often run at higher PSI, so adjust the pressure field accordingly to get an accurate estimate of water and cost losses.

Does fixing leaks quickly make a significant financial difference?

Absolutely. Because leaks run 24 hours a day, even a brief delay in repairs compounds the loss significantly. A leak that costs a few dollars a day can cost hundreds or thousands annually if left unaddressed, not counting potential water damage costs.

What if I don't know the exact break dimensions?

Use your best visual estimate. Even approximate values give you a useful ballpark for understanding the scale of water loss. For professional pipe assessment, a licensed plumber or leak detection service can measure breaks accurately.

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