How to Fix a Running Toilet in Truckee & Lake Tahoe Homes
Local Plumbing Tips from Rooter Man Plumbing of Truckee & Tahoe
A running toilet in your home can waste hundreds of gallons of water. Whether you’re trying to fix a running toilet yourself or need a reliable plumber in Truckee or Tahoe, this guide will explain your best options.
A running toilet isn’t just an annoying sound echoing through your home—it can waste hundreds of gallons of water per day and drive up your utility bills. With higher water costs and older plumbing common in mountain homes, this is a problem you don’t want to ignore.
The good news? Many running toilet issues are easy to fix. In this guide, Rooter Man Plumbing walks you through the most common causes of a running toilet and how to fix them—plus when it’s best to call a local professional plumber.
Common Causes of a Running Toilet
If your toilet won’t stop running, one of these issues is usually to blame:
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Worn or faulty flapper valve
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Incorrect water level in the tank
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Broken or failing fill valve
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Leaky flush valve
Let’s break down how to diagnose and fix each one.
1. Faulty Flapper Valve
The flapper valve creates a seal between the tank and the bowl. Over time—especially with Truckee & Tahoe’s hard water—flappers can warp, crack, or collect mineral buildup, allowing water to leak continuously.
How to Fix a Flapper Valve:
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Turn off the water supply behind the toilet.
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Remove the tank lid and inspect the flapper for damage or buildup.
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If worn, replace it with a compatible flapper from a local hardware store.
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Reattach the chain so it has slight slack (not too tight or loose).
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Turn the water back on and test the flush.
✅ Local tip: Mineral-heavy Tahoe water can shorten flapper lifespan—replacement every few years is common.
2. Incorrect Water Level in the Tank
If the water level sits too high, it will constantly drain into the overflow tube, causing nonstop running.
How to Adjust the Water Level:
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Remove the tank lid.
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Check the water level—it should sit about 1 inch below the overflow tube.
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Adjust the float or fill valve:
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Float ball: gently bend the arm downward.
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Modern fill valve: turn the adjustment screw to lower the level.
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3. Broken or Malfunctioning Fill Valve
A failing fill valve may not shut off properly or refill the tank efficiently, leading to constant running or weak flushes.
How to Replace a Fill Valve:
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Shut off the water supply and flush the toilet.
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Remove the old fill valve from inside the tank.
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Install the new fill valve following the manufacturer’s instructions.
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Turn the water back on and fine-tune the water level.
⚠️ If you’re unsure, improper installation can cause leaks—this is where a local Truckee and Tahoe plumber can help.
4. Leaky Flush Valve
A damaged flush valve allows water to seep from the tank into the bowl, often causing intermittent running.
How to Fix a Leaky Flush Valve:
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Turn off the water and drain the tank.
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Remove the old flush valve assembly.
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Install a new flush valve and secure it properly.
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Restore water and test for leaks.
This repair is more involved and often best handled by a professional plumber.
Extra Tips for Truckee & Tahoe Homeowners
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Check for mineral buildup: Hard water can interfere with seals and valves.
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Use the dye test: Add food coloring to the tank. If color appears in the bowl after 15 minutes, there’s a leak.
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Perform annual inspections: Prevent small issues from becoming major plumbing repairs.
When to Call a Local Truckee/Tahoe Plumber
If your toilet is still running after trying these fixes—or if you notice leaks, corrosion, or inconsistent water pressure—it’s time to call a professional.
Rooter Man Plumbing of Truckee & Tahoe provides fast, reliable plumbing services throughout:
- Truckee, CA
- North Lake Tahoe
- Tahoe Donner
- Kings Beach
- Tahoe City
- Incline Village
- South Lake Tahoe
- Homewood
- & More!
We specialize in diagnosing plumbing issues common to mountain homes and older plumbing systems.
Final Thoughts
Fixing a running toilet quickly can save water, lower your utility bills, and prevent more serious plumbing problems down the road. While some repairs are easy DIY fixes, others require expert attention.
If you’d rather skip the hassle, Rooter Man Plumbing of Truckee & Tahoe is just a call away—your trusted local plumber serving Truckee and Lake Tahoe.
👉 Need help now? Contact Rooter Man Plumbing of Truckee for fast, local toilet repair service today.