Calculator

Water leak savings calculator

Price a continuous leak over a year at your own city’s industrial water and wastewater rate, in Canadian dollars.

What it asks for: leak rate (LPM) · hours a day · days a year · water and sewer rate ($/m³). Or just pick your city: we keep the industrial water and sewer rate for 16 of them.

Run the numbers

What a leak costs

Choose your city or enter your own water and sewer rate to estimate the cost of a continuous leak.

sets the water and sewer rate below

$4.96/m³ (water $2.63 + wastewater $2.33)

Single uniform volumetric charge; no blocks and no separate industrial rate (2025 was $2.21 + $2.32). Only the fixed daily basic charge varies by meter size, 5/8"x1/2" to 8", and it is excluded, as is the $11.20/month stormwater service fee. The City's page cites By-laws (2019)-20448 and (2016)-20074 and publishes only 2025 and 2026 columns; no 2027 rate is currently posted.

litres per minute
how long it runs; a leak usually runs all of them
how often
dollars per m³, set by the city above, or type your own off the bill

Enable JavaScript to calculate with your inputs. The figures shown use the example values. You can also email your figures to for help.

What it costs you

$26,070/yr

  • 5,256cubic metres a year
  • $71.42a day, every day
Annual cost of a continuous leak
YOUR NUMBERS1 LPM: 2,607 $/yr5 LPM: 13,035 $/yr10 LPM: 26,070 $/yr25 LPM: 65,174 $/yr50 LPM: 130,349 $/yr2,60713,03526,07065,174130,349
YOUR INPUTS · YOUR RATES · CANADIAN DOLLARS

Estimate based on the inputs and rates shown.

The assumptions behind this
  • Water and sewer rate · 4.96 $/m³ (water + sewer)City of Guelph 2026 volumetric water ($2.63/m³) + wastewater ($2.33/m³), at guelph.ca/living/environment/water/water-rates/ (re-verified 2026-09-02; the City's page cites By-laws (2019)-20448 and (2016)-20074). Guelph is the default because it is where we are; the water-leak calculator carries all sixteen municipalities in src/data/water-rates.json, which range from $2.6665/m³ (London) to $7.0302/m³ (Kitchener).
  • water-rates.json · 16 municipalities, combined industrial water and sewer, September 2026https://guelph.ca/living/environment/water/water-rates/

Water and sewer rates verified against each utility's own published tariff in September 2026, using the industrial/commercial class wherever the utility publishes one; rates typically rise annually.

Where these numbers come from

Every constant, its value, and the document it was read out of.

  • Water and sewer rate · 4.96 $/m³ (water + sewer)City of Guelph 2026 volumetric water ($2.63/m³) + wastewater ($2.33/m³), at guelph.ca/living/environment/water/water-rates/ (re-verified 2026-09-02; the City's page cites By-laws (2019)-20448 and (2016)-20074). Guelph is the default because it is where we are; the water-leak calculator carries all sixteen municipalities in src/data/water-rates.json, which range from $2.6665/m³ (London) to $7.0302/m³ (Kitchener).
  • water-rates.json · 16 municipalities, combined industrial water and sewer, September 2026Combined marginal cost of one extra cubic metre through the meter: volumetric water + volumetric sewer, on the industrial/commercial (non-residential) tariff where the utility publishes one, and on the single uniform metered rate where it does not. Excludes fixed meter-size service charges, stormwater and fire-protection levies, none of which change when a leak starts. Each city links to its own municipal or utility rate page in the data file; the range runs from $2.6665/m³ (London) to $7.0302/m³ (Kitchener). Water and sewer rates verified against each utility's own published tariff in September 2026, using the industrial/commercial class wherever the utility publishes one; rates typically rise annually.

Measure the use behind the estimate.

We will walk your facility with you, identify what to meter first and help quantify the cost.

Book a site visitSee the water leak case studies

or call 1-833-QUANTFY (1-833-782-6839)