A water bill that’s suddenly higher than usual is one of those problems that’s easy to ignore but expensive to leave alone. In many cases, the cause is something fixable, but the longer it goes unaddressed, the more it costs.
If you’re in the Lynnwood area and your water bill has jumped without explanation, here are the most common reasons why and what to do about each one.
You Have a Toilet That Won’t Stop Running
The Most Common Culprit in the House
A running toilet is the number one cause of unexpectedly high water bills in residential homes. A toilet that runs continuously can waste anywhere from hundreds to thousands of gallons per day depending on the severity of the issue, often without making enough noise to notice.
How to Tell If Your Toilet Is Running
One quick test: put a few drops of food coloring in the tank and wait 15 minutes without flushing. If color appears in the bowl, water is leaking from the tank and your toilet is running more than it should.
What Causes a Running Toilet
The most common causes are a worn flapper valve, a faulty fill valve, or a float that’s set too high. Most of these are straightforward repairs for a plumber and inexpensive to fix compared to months of wasted water.
You Have a Hidden Leak Somewhere in the Home
Leaks Don’t Always Make Themselves Known
Leaks inside walls, under slabs, or beneath the yard can go undetected for months while steadily driving up your water bill. Unlike a dripping faucet, these aren’t visible and often don’t cause obvious damage right away.
Signs You May Have a Hidden Leak
- Your water bill is high but your usage hasn’t changed
- You hear running water when no fixtures are in use
- You notice warm spots on the floor or unexplained damp areas
- Your water meter continues to move when all water in the home is turned off
If your meter is still running when everything is shut off, that’s a strong indicator of a leak somewhere in your system.
Slab Leaks Are Especially Common in Older Homes
In homes with older piping, leaks beneath the concrete foundation, known as slab leaks, are a frequent cause of high water bills in the greater Seattle area. These require professional detection and repair and should not be left unaddressed.
Your Outdoor Irrigation System Has a Problem
Summer Irrigation Is a Major Driver of High Water Bills
If you have an automatic sprinkler or irrigation system, summer is the season where it works hardest. A broken sprinkler head, a misaligned zone, or a system running longer than programmed can add significantly to your monthly bill without any visible sign of the problem from inside the home.
Check for These Issues
- Sprinkler heads that spray onto pavement or run in the wrong direction
- Zones that run longer than intended due to controller settings
- Leaks at the connection point between the irrigation system and your main water line
A quick walk around your property while the system runs can help identify obvious issues. A plumber can inspect the connection to your main line and help identify less visible problems.
Your Fixtures Are Older & Less Efficient
Older Toilets, Faucets & Showerheads Use More Water
Fixtures installed before low-flow standards became widespread can use significantly more water per use than modern equivalents. Older toilets in particular can use three to five gallons per flush compared to 1.28 gallons for current WaterSense models.
If your home has older fixtures throughout, the combined inefficiency can show up as a consistently elevated water bill even without any single dramatic leak.
You Had More People in the Home
Seasonal Household Changes Add Up
Summer often means kids home from school, houseguests, or more frequent entertaining. Additional showers, laundry loads, and general water use across more people can push your bill higher without anything being wrong with your plumbing at all.
If your bill spiked in line with a change in household activity, this may be the simplest explanation.
Why Choose Service Plumbing & Heating in Lynnwood
Service Plumbing and Heating serves homeowners and businesses throughout Lynnwood and the greater Seattle area with reliable, professional plumbing services. Whether you need a leak diagnosed, a running toilet repaired, or an older system evaluated, the team brings decades of experience and a commitment to lasting results.
From routine repairs to complex repiping projects, Service Plumbing and Heating is equipped to handle what’s driving up your bill and get your system back to running efficiently.
Contact Service Plumbing & Heating for a Quote in Lynnwood
A high water bill is worth investigating sooner rather than later. Contact Service Plumbing and Heating to request a quote and get a professional assessment of what’s going on with your plumbing.
