Is Your Toilet Water Running All the Time in Calgary, AB?

Can you hear water trickling into the toilet tank long after someone has flushed? In Calgary, AB, a toilet that runs all the time is one of the most common bathroom plumbing issues we see. It may sound minor, but the constant flow can waste hundreds of litres of water every day and increase the chance of damage around the toilet base.

The good news is that most running toilets are repairable. At BPR Mechanical Ltd, we have spent more than 25 years diagnosing and repairing residential plumbing problems throughout Calgary, including Inglewood, Ramsay, Marda Loop, Beltline, Bridgeland, Kensington, Signal Hill and Mahogany. Our properly licensed plumbing team focuses on finding the actual cause instead of replacing parts unnecessarily, and our 4.9-star rating across 83 Google reviews reflects the care we bring to each home.

The toilet tank has a small group of parts that must work together: the fill valve, flush valve, flapper or seal, overflow tube, handle and lift chain. When one component no longer closes or adjusts correctly, fresh water continues entering the tank and leaves through the bowl.

The most common causes we find in Calgary homes include:

• A worn flapper or flush-valve seal: Rubber gradually hardens, warps or develops mineral buildup. This is the most common reason for a silent leak from the tank into the bowl.

• A failing fill valve: The valve may hiss continuously, refill every few minutes or fail to shut off at the correct water level. Older valves can also become noisy after years of mineral exposure.

• An incorrectly adjusted float: If the float is set too high, water rises above the designed level and spills into the overflow tube. If it is set too low, the toilet may flush poorly and refill repeatedly.

• A chain or handle problem: A chain that is too tight can hold the flapper slightly open. A loose or damaged handle can prevent the flush valve from sealing fully.

• A cracked tank or damaged overflow tube: These problems are less common but require more than a basic adjustment and may justify replacing the toilet.

The amount depends on the size of the leak. A slow flapper leak may waste several dozen litres a day, while a toilet with a badly failed fill valve can send hundreds of litres down the drain. The sound may be quiet enough to overlook, especially in a basement bathroom or a rarely used ensuite, but the meter continues to record the flow.

You can perform a simple check by making sure no fixtures are running, recording the water meter reading, and waiting 30 to 60 minutes without using water. If the meter changes, a toilet is a likely suspect. In multi-bathroom homes, test each toilet separately by closing one toilet’s supply valve at a time. This is particularly useful in older homes in Inglewood, Ramsay and Beltline, where aging toilet components may have been repaired several times.

Do not rely only on the water bill. A small toilet leak may not be obvious on a monthly statement, and Calgary households can have seasonal changes in water use. The food-colouring test is often the quickest way to identify a tank-to-bowl leak.

A basic inspection is reasonable if the toilet is stable, there is no water on the floor, and you are comfortable removing the tank lid. Follow these steps:

1. Check the handle and chain. Make sure the handle returns fully and the chain is not pulling the flapper upward. Leave a small amount of slack in the chain.

1. Look at the water level. The water should normally sit below the top of the overflow tube. If it is spilling into the tube, the fill valve or float likely needs adjustment or replacement.

1. Inspect the flapper. Look for warping, cracks, mineral deposits or a deteriorated edge. Avoid forcing it closed because that can damage the seal or flush valve.

1. Check the supply connection. Look for dripping at the shutoff valve, flexible connector and tank connection. Do not overtighten plastic fittings.

1. Test with food colouring. Wait at least 10 minutes without flushing. Colour in the bowl confirms water is escaping from the tank.

A replacement flapper or fill valve can sometimes solve the problem, but parts are not universal. Toilets differ by manufacturer, flush-valve style and tank design. If the repair does not stop the running, the toilet continues to refill every few minutes, or you notice damp flooring, call our team rather than repeatedly changing parts.

For a straightforward flapper or fill-valve repair, a plumber can often complete the work in about 30 to 90 minutes, depending on access and the condition of the shutoff valve. In our 25 years of experience, the repair becomes more involved when an older toilet has corroded bolts, a seized supply valve, a cracked tank or a worn connection at the floor.

Repair is usually practical when the bowl and tank are sound, the toilet flushes properly and replacement parts are available. Replacement may be the better long-term choice when the toilet has repeated leaks, poor flushing, visible cracks, severe staining, or obsolete components. A modern, properly sized toilet can also improve flushing performance and reduce water use, but it still needs to be installed correctly and sealed securely.

Typical service pricing depends on the part, access and whether the shutoff valve or toilet itself must be replaced. We provide a clear explanation before proceeding, including whether a repair is likely to be dependable or only a temporary fix. For broader bathroom concerns, our bathroom plumbing services can address toilets, faucets, shutoffs, drains and other connected fixtures in one visit.