April 11, 2026
You open your water bill and do a double take. The number staring back at you is noticeably higher than last month — and nothing about your routine has changed. Sound familiar? A spike in your water bill is one of the most common reasons Tulsa homeowners call a plumber, and the good news is that most of the culprits are fixable once you know where to look.
Before you assume the water company made a mistake, take a closer look inside your home. Silent leaks and hidden plumbing issues can waste thousands of gallons of water every month without making a sound. Here are seven of the most common hidden causes of a high water bill — and what you can do about each one.
This is the single biggest offender in most homes. A toilet that runs continuously can waste up to 200 gallons of water per day — that’s roughly 6,000 gallons a month going straight down the drain. The tricky part is that running toilets are often silent. The flapper valve inside the tank is usually to blame. When it wears out or warps, it stops forming a proper seal and water trickles through nonstop.
Quick test: Drop a few drops of food coloring into your toilet tank. Wait 15 minutes without flushing. If color appears in the bowl, you have a leak.
A faucet that drips once per second wastes over 3,000 gallons per year. Multiply that across multiple fixtures and the numbers add up fast. Check all your faucets — including ones in guest bathrooms or utility rooms that don’t get used often. These are easy to forget about, but they keep dripping quietly whether you’re watching or not.
Worn washers, corroded valve seats, and damaged O-rings are all common causes of dripping faucets. Many of these are inexpensive repairs when caught early.
This one is harder to spot but potentially the most expensive if ignored. Leaks in the water lines running under your home’s foundation — often called slab leaks — can go undetected for months. Signs include warm spots on your floor, the sound of running water when nothing is on, or unexplained wet spots in your yard.
Tulsa’s clay-heavy soil can shift with seasonal weather changes, putting stress on underground pipes and increasing the risk of these types of leaks. If you suspect a slab leak, don’t wait — water damage to a foundation compounds quickly.
If your home has a sprinkler or drip irrigation system, it’s worth turning it on and doing a visual inspection. Cracked heads, broken lines, or a controller that’s running more frequently than you realize can quietly drain your water usage through the roof. This is especially common after Tulsa winters, when freeze-thaw cycles can crack plastic sprinkler heads and fittings.
Tip: Walk your yard while the system is running and look for pooling water, uneven spray patterns, or heads that aren’t popping up properly.
Water treatment systems can malfunction and get stuck in a continuous regeneration cycle, running water through the system repeatedly without stopping. If you have a water softener, check the settings and look for any error indicators. A softener regenerating more than once every few days is a red flag worth investigating.
Over time, the joints and connections throughout your plumbing system can degrade. This is particularly common in older Tulsa homes with galvanized steel or aging copper pipes. Small drips at connection points inside walls or under cabinets may not cause visible water damage right away, but they’re still adding to your bill every single day.
Periodically open the cabinet under your kitchen and bathroom sinks to check for moisture, staining, or corrosion around the supply lines and drain connections. These are easy to overlook during day-to-day life.
More than you might think. If your hot water recirculation pump is set to run continuously rather than on a schedule, it’s pumping water through your system around the clock. Additionally, a failing pressure relief valve on your water heater can discharge small amounts of water regularly, which you may never notice unless you check the area around the unit.
Check the floor around your water heater for moisture or mineral deposits, and listen for the sound of water movement when you know nothing is in use.
Here’s a simple way to confirm whether you have a leak somewhere in your home:
This test won’t tell you exactly where the leak is, but it will confirm that one exists — and give you the information you need to take the next step.
Some leaks are easy DIY fixes, like replacing a toilet flapper or tightening a supply line. But others — slab leaks, pipe joint failures, underground irrigation problems — require professional leak detection equipment and licensed expertise to diagnose and repair correctly.
The team at Guaranteed Plumbing has helped Tulsa homeowners track down and repair hidden leaks throughout the metro area, from Broken Arrow to Owasso and everywhere in between. Whether it’s a running toilet or a suspected slab leak, getting it diagnosed quickly almost always saves money in the long run compared to letting the problem quietly drain your wallet.
If your water bill has spiked and you can’t figure out why, give us a call at (918) 384-8731. We’ll help you find the source of the problem, walk you through your options, and get everything repaired right. Don’t let a hidden leak turn into a bigger headache — the sooner you catch it, the better.
“`
Licensed, insured, and available 24/7 for emergencies throughout the Tulsa metro area.
