What Causes a Running Toilet and How Much Does It Cost to Repair?

Is your toilet constantly running long after you flush? A running toilet might seem like a small issue, but it can waste hundreds of litres of water per day — leading to higher water bills and unnecessary wear on your plumbing system.

Let’s explore the common causes of a running toilet, what it takes to fix it, and how much you can expect to pay for a professional plumbing repair in Saskatoon.

🚽 1. Worn Out Flapper Valve

The flapper valve controls water flow from the tank into the bowl during a flush. If it becomes warped, dirty, or fails to seal properly, water continues to leak into the bowl — causing the toilet to refill constantly.

This is one of the most common and inexpensive repairs, often resolved by replacing the flapper.

💧 2. Float or Fill Valve Issues

The float mechanism and fill valve work together to regulate how much water fills the tank. If the float is set too high, water overflows into the overflow tube — making it seem like the toilet is always running.

A plumber can adjust or replace the float and fill valve to stop water waste and restore proper function.

🧰 3. Chain Problems or Misalignment

If the chain connecting the flush handle to the flapper is too tight, too loose, or tangled, it may prevent the flapper from sealing properly. This leads to continuous water loss and can usually be fixed with a simple adjustment.

📉 4. Worn Tank Components

Over time, internal toilet components such as the flush valve seat, tank gaskets, or washers may degrade. This can cause slow leaks that are harder to spot but still lead to a constantly running toilet.

Replacing these worn parts can restore proper flushing and prevent long-term water damage.

💸 5. How Much Does It Cost to Fix a Running Toilet?

Repairing a running toilet is often quick and affordable. On average, you can expect to pay:

  • Minor repairs (flapper/chain adjustment): $80–$120
  • Fill valve or float replacement: $120–$180
  • Full toilet rebuild (multiple parts): $200–$300+

Prices may vary depending on the brand of toilet, age of the fixture, and whether new parts are needed.

🛠️ How Pro Service Mechanical Can Help

At Pro Service Mechanical, we provide fast, affordable toilet repairs in Saskatoon. Our licensed plumbers can quickly diagnose what’s causing the problem and replace any faulty parts to stop the leak — saving you money and stress.

  • Toilet diagnostics and inspections
  • Flapper, float, and valve replacements
  • Full toilet rebuilds
  • Water efficiency upgrades

✅ Final Thoughts

A running toilet may seem like a small issue, but left unfixed, it can waste thousands of litres of water each month. Whether it’s a simple part replacement or a full repair, Pro Service Mechanical can help restore efficiency and peace of mind.

Schedule your plumbing service today and get your toilet running like new again.

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