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Take the leaky toilet test

To find out if your toilet is wasting water, remove the tank lid of your toilet and follow these simple steps:

Toilet Leak Steps Drop Toilet Leak Steps Peek Toilet Leak Steps Repair Toilet Leak Steps Save
  1. Drop - Put several drops of food colouring into the toilet tank and wait 10 minutes.
  2. Peek - Look in the bowl. If the water changes colour, you've got a leak.
  3. Repair - If the water changes, your toilet is leaking and needs repair.
  4. Save - Congratulations! By repairing just one toilet, you will save money on your water bill!

Why check for leaks?

Leaks can range in size​. A chain caught under a toilet flapper can waste 3 m3/month. A leak this size could increase your bill by $9.45 each month.

If the water level in the toilet tank is too high and overflowing into the overflow tube, or the flapper is completely lifted, it can waste 1,200 m3/month. A leak this size could increase your bill by $3,780.48 each month.*

Calgarian Water Usuage

What to do when you find a toilet leak?

Follow our simple repair instructions, hire a plumber, visit a hardware store for repair tips, or watch a YouTube video with detailed instructions.

How often should you check for leaks?

Check your home for leaks twice a year. Even new toilets can leak and many toilet leaks are silent so it's important to add checking for leaks to your regular home maintenance schedule.

Be aware that time-released toilet bowl cleaners that sit in your tank (rather than flush-released ones) can speed up the deterioration of parts in your toilet and cause leaks. If you use these products, you should check your toilet for leaks more frequently. In the spring, don't forget to check your outside taps for leaks too.

Please Note: The City of Calgary is not liable or responsible for the contents of any off-site pages referenced, availability of outside resources or for service delays resulting from unforeseen circumstances such as technical problems including server or connection issues.​

Volume of water can vary based on type of fixture and water pressure. Assumes a 30 day billing period.

*Based on 2018 water rate ($1.6652/m3) and wastewater rate ($1.4852/m3) for Calgary. Not including service charges, and on modeling of possible flow rate of 1” diameter residential service line.