If your water bill suddenly spiked and your household habits haven’t changed, you’re probably wondering:

“Why is my water bill so high if we’re not using more indoor water?”

This is one of the most common questions homeowners ask—especially in the spring and summer months. In many cases, the answer isn’t inside your home at all.

The Most Common Cause: Increased Outdoor Water Usage

Even if your indoor water use stays the same, outdoor water usage can dramatically increase your water bill.

Common outdoor water uses that raise your bill:

• Lawn irrigation systems running more frequently
• Filling or topping off a swimming pool
• Watering gardens, plants, and landscaping
• Kids playing with sprinklers or hoses
• Pressure washing driveways, siding, or decks

These activities can use hundreds to thousands of gallons of water per week, often without homeowners realizing how quickly it adds up.

How Much Water Does Outdoor Use Really Add?

To put it in perspective:

• A typical garden hose uses 5–10 gallons per minute
• Lawn irrigation systems can use 1,000+ gallons per hour
• Filling a pool can use 10,000–20,000 gallons or more

Even a small increase in outdoor use can lead to a noticeable spike in your monthly water bill.

Hidden Outdoor Leaks That Can Skyrocket Your Bill

If your water bill seems unusually high, there may also be a hidden leak outside your home.

Common outdoor plumbing issues:

• Leaking hose bib (outdoor faucet)
• Underground pipe leaks in irrigation lines
• Dripping sprinkler heads
• Broken or misaligned irrigation systems
• Hose left running or slowly leaking

Unlike indoor leaks, outdoor leaks often go unnoticed for weeks—wasting significant amounts of water.

Signs Your High Water Bill May Be a Plumbing Issue

You should take a closer look if you notice:

• A sudden spike in your water bill with no clear reason
• Wet spots in your yard or unusually green patches
• Constant dripping from your outdoor faucet
• Low water pressure at your hose or sprinkler system
• Your water meter running even when no water is being used

These can indicate a leak in your plumbing system, not just increased usage.

What You Can Do to Lower Your Water Bill

Here are a few simple steps to reduce outdoor water use:

• Run irrigation systems early in the morning or evening
• Check sprinkler heads for leaks or misalignment
• Use a hose timer or shut-off nozzle
• Inspect your hose bib for dripping or leaks
• Monitor your water meter regularly

Small adjustments can make a big difference over time.

When to Call a Professional Plumber

While some water usage increases are normal, a consistently high water bill could point to a deeper issue.

You should contact a licensed plumber if:

• You suspect a hidden leak
• Your hose bib is leaking or damaged
• Your irrigation system isn’t functioning properly
• Your water bill continues to rise without explanation

A professional plumber can:

• Perform leak detection
• Inspect outdoor plumbing and irrigation lines
• Repair or replace faulty hose bibs and pipes
• Help prevent long-term water damage and high utility costs

Don’t Ignore a High Water Bill

A rising water bill is often your first warning sign that something isn’t right. Whether it’s increased outdoor use or a hidden leak, addressing the issue early can save you money and prevent costly repairs.

If you’re unsure what’s causing your high water bill, it’s always best to have your plumbing system checked by a professional.

Need help finding the cause of your high water bill?
A licensed plumber can quickly diagnose the issue and help you get your water usage—and your costs—back under control. We provide service to the Lehigh Valley and Stewartsville, NJ and the surrounding areas. Contact us today!