Why Is My Water Bill So High? NC Leak Checklist
Seeing a higher summer water bill? Use this Eastern North Carolina leak checklist to check toilets, fixtures, irrigation, your meter, and hidden leaks.
6/25/20265 min read
A higher water bill can be normal during summer. Lawn watering, filling a pool, washing cars, and houseguests can all increase water use.
But when the bill jumps without a clear change in routine, or stays high after outdoor watering slows down, a plumbing leak may be the reason. Many leaks never create an obvious puddle. A running toilet, loose irrigation connection, leaking water heater valve, or damaged underground line can waste water quietly until the next bill arrives.
Use this checklist to separate normal summer usage from a leak that needs attention.
Start With the Bill, Not the Pipes
Begin by comparing the actual water usage shown on the bill, not just the dollar amount.
Check:
The number of gallons or CCF used
The length of the billing period
Whether the meter reading was actual or estimated
Usage from the same month last year
Any recent rate or fee changes
Then consider recent activity. Did you begin watering more often, fill a pool, pressure-wash the house, or have overnight guests?
If measured usage increased without an obvious explanation, continue through the checklist.
Run a No-Use Water Meter Test
Your meter can help confirm whether water is flowing when it should not be.
Turn off every faucet and water-using appliance. Do not flush toilets, run the dishwasher, use the washing machine, or operate the irrigation system. Pause automatic equipment such as an ice maker if possible.
Take a photo of the meter reading, wait without using water, and check it again. A fast leak may appear within 30 minutes, while the EPA recommends a two-hour no-use test for a more complete check.
If the reading changes, water is moving somewhere in the system. When the meter moves but no leak is visible, professional leak detection and repair can help locate the source without unnecessary damage to walls, floors, or the yard.
One still reading does not rule out an intermittent problem. A toilet may run only after certain flushes, and an irrigation leak may appear only while a scheduled zone is operating.
Test Every Toilet
Toilets are a common source of silent water loss. A worn flapper can allow water to pass from the tank into the bowl continuously.
Listen for hissing, trickling, or a tank that refills by itself. Then perform a simple dye test:
Add a few drops of food coloring to the tank.
Wait about 10 minutes without flushing.
Check the water in the toilet bowl.
Flush afterward to prevent staining.
If color appears in the bowl, the toilet is leaking.
Also check whether the tank water reaches the overflow tube or the fill valve keeps running. If the toilet will not stop refilling, faucet, toilet, and shower repair can correct the problem before more water is wasted.
Check Faucets, Showers, and Supply Connections
Walk through every kitchen, bathroom, laundry area, and utility room.
Look for:
Dripping faucet spouts
Moisture beneath sinks
Corroded shutoff valves
Damp cabinet floors
Leaking showerheads or tub spouts
Wet areas around washing machine hoses
Dry suspicious areas with a paper towel, then check them again after using the fixture. Focus on pressurized supply lines and valves because they can leak continuously.
A drain connection usually leaks only while water is draining. It can still cause damage, but it may not explain constant metered water loss by itself.
Inspect Outdoor Plumbing and Irrigation
Outdoor use is often the biggest reason summer bills rise. It is also easy to miss an irrigation problem when the system runs early in the morning.
Run each irrigation zone and watch for:
Broken or tilted sprinkler heads
Water spraying onto pavement
Pooling around valve boxes
A zone that does not shut off
Soft soil after watering ends
An unusually green strip of grass
Leaks at hose bibs, timers, and hose connections
Check the yard again several hours later. Turning off the controller does not always rule out a leak in a pressurized irrigation supply line.
If you have a separate irrigation meter, compare it with the household meter. This can show whether the increase is coming from outdoor watering or plumbing inside the home.
Look Around the Water Heater and Appliances
A water heater leak may begin as a slow drip around a connection, drain valve, relief valve discharge pipe, or the bottom of the tank.
Check for water in the drain pan, rust streaks, damp flooring, or corrosion around the hot and cold connections. Do not plug a discharge pipe or dismantle a hot or pressurized component.
Refrigerator ice maker lines, dishwashers, washing machines, and water treatment equipment may leak only when they cycle. Inspect nearby surfaces for swelling, staining, or moisture.
If water is collecting around the tank or its connections, schedule water heater repair and replacement before the leak causes more damage.
Check the Crawlspace and Underground Water Line
If your home has a crawlspace, look for:
Wet insulation
Dripping pipes
Stained floor joists
Standing water
Soft soil
Musty odors
Do not enter an unsafe or flooded crawlspace.
When the meter moves but the interior plumbing appears dry, the leak may be between the meter and the home.
Warning signs include:
A wet or unusually green patch in the yard
Soft ground or a new depression
Reduced water pressure
Hissing near the pipe entry point
Water surfacing near the foundation
Do not begin digging without knowing where utilities are located. Underground leaks often require specialized equipment to narrow down the source first.
Document What You Find
Save the affected bills, meter photos, pictures of damage, and the plumber’s repair invoice.
Some water providers offer adjustments after qualifying leak repairs, but rules and deadlines vary. Ask the utility listed on your bill about its current policy.
Keeping clear documentation can make it easier to show when the increased usage occurred, what caused it, and when the repair was completed.
When Should You Call a Plumber?
Schedule professional service when:
The meter changes while all water use is off
The increase cannot be explained by summer activity
Water appears in a wall, floor, crawlspace, or yard
A shutoff valve is stuck, corroded, or leaking
The suspected leak is underground or concealed
A toilet or fixture continues leaking after a basic check
If water is actively damaging the home, shut off the main supply only if you can reach and operate it safely, then call for service.
Frequently Asked Questions
Can a running toilet really cause a high water bill?
Yes. A toilet can leak silently from the tank into the bowl and refill throughout the day. The food-coloring test is a quick way to identify it.
Why is my bill high if the meter is not moving now?
The usage may have occurred earlier, or the leak may be intermittent. Common examples include a sticking toilet flapper, scheduled irrigation problem, or appliance line that leaks only during operation.
Can a water heater raise the water bill?
Poor efficiency usually affects the electric or gas bill. A water heater raises water usage only when water is escaping from the tank, piping, valve, or another connected component.
What if my bill rises every summer?
Compare irrigation schedules, pool use, and billing days. Then perform the meter test with outdoor watering off. A seasonal increase may be normal, but unexplained meter movement deserves attention.
Find the Leak Before It Causes More Damage
A high summer water bill is worth investigating when household habits have not changed. Finding the source early can reduce water waste, limit property damage, and prevent a small repair from becoming an emergency.
Carolina Roots Plumbing serves homeowners throughout Wilson, NC and Rocky Mount, NC, along with communities across Wilson, Wayne, Wake, Nash, and Johnston counties.
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