Licensed & Insured: CSLB #1057926
Trusted Plumbing Experts Across the Bay Area

Common Toilet Problems & How to Fix Them – A Homeowner’s Guide
Is your toilet constantly running, not flushing properly, leaking, or clogging frequently? These issues can waste water, increase utility bills, and cause hidden damage to your home if left untreated.
At Repipe Champions Plumbing and Rooter, we specialize in fast, affordable toilet repair and installation services throughout Santa Clara, San Mateo, Alameda Counties, and the greater Bay Area. Whether you need to fix a minor leak or replace a failing toilet, our licensed plumbers are here to help.
1. Constantly Running Toilet
A running toilet can waste up to 200 gallons of water per day. If the tank never stops filling, it’s likely due to internal component failure.
Common causes include:
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Faulty flapper valve that doesn’t seal properly
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Float set too high, allowing overflow
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Broken or worn-out fill valve
What we do:
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Adjust or replace the float mechanism
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Install a new flapper valve or fill valve
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Inspect for internal tank damage or buildup
If adjustments don’t solve the problem, professional diagnosis may be needed.
2. Toilet Won’t Flush or Has a Weak Flush
Weak flushing or incomplete flushes often point to internal component wear or restricted water flow.
Common causes:
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Partial clog in the trap or drain line
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Low water level in the tank
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Damaged or misaligned flapper
Our solution:
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Clear obstructions with a toilet auger
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Adjust the water fill level
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Replace worn flappers or flush mechanisms
If multiple toilets are affected, there may be a system-wide issue requiring inspection.
3. Toilet Leaking at the Base or Tank
Leaks can damage your subfloor and lead to mold if left unresolved.
Common signs:
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Water pooling at the base of the toilet
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Damp flooring around the toilet area
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Tank sweating or cracked porcelain
We address leaks by:
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Replacing the wax ring seal beneath the toilet
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Tightening mounting bolts
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Inspecting and replacing cracked components
Major leaks should be handled quickly to prevent long-term structural damage.
4. Toilet Clogs Frequently
If you’re plunging your toilet often, the problem may be deeper than a one-time blockage.
Possible reasons:
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Flushing inappropriate items (wipes, paper towels)
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Inadequate water volume in the bowl
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Obstructions in the main sewer line
What we offer:
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Toilet augering for localized clogs
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Recommendations on proper toilet use and flushing habits
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Camera inspection of your drain system if clogs persist
Recurring clogs may signal a need for repiping or main line repair.
5. Cracks in the Toilet Tank or Bowl
Cracks can lead to leaks or structural failure, even if they seem minor at first.
Signs of cracking:
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Visible hairline fractures in the tank or base
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Water leaking even when the toilet isn’t in use
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Toilet fails to hold water in the bowl
Our recommendation:
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Temporary patching only for minor, non-structural cracks
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Full toilet replacement for spreading or base-level cracks
Upgrading to a modern, efficient toilet may reduce future maintenance and water usage.
When to Call a Professional for Toilet Service
You should contact a licensed plumber if:
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Your toilet won’t stop running or flushing is weak
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There’s water leaking from the base or tank
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You’re experiencing frequent clogs
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There are visible cracks in the porcelain
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Repairs no longer resolve the issue
Whether you need a simple repair or a full replacement, we provide reliable solutions to restore your home’s comfort and efficiency.
Schedule Toilet Repair or Installation Today
Serving homes and businesses throughout Santa Clara, San Mateo, Alameda Counties, and beyond, our expert team delivers professional, code-compliant plumbing solutions backed by experience and integrity.
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