Calculator
Water leak savings calculator
How much is that leak costing you? Work out what a continuous leak costs over a year at your own city’s water and sewer rate, in Canadian dollars.
What it asks for: leak rate (LPM) · hours a day · days a year · water + 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
The easiest number on this page to check: pick your city, and a leak runs whether or not the factory does.
What it costs you
$26,070/yr
- 5,256cubic metres a year
- $71.42a day, every day
Conservative arithmetic, verified against your own utility bills. Your number comes from your own meters.
The assumptions behind this
water.combinedRate— 4.96 $/m³ (water + sewer)[TOM-REVIEW]City of Guelph 2026 volumetric water ($2.63/m³) + wastewater ($2.33/m³), rate By-law (2025)-21165 Table 3 — guelph.ca/living/environment/water/water-rates/. 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). Replaces the v2 placeholder of $4.00/m³, which the entry itself flagged for verification against exactly this schedule.water-rates.json— 16 municipalities, combined industrial water + sewer, August 2026https://guelph.ca/living/environment/water/water-rates/
Standard industrial water + sewer rates as of August 2026, sourced from each municipality; rates typically rise annually.
Every constant used here shows its source under the result. [TOM-REVIEW] before launch (§G.2). Nothing is hard-coded in a component — the constants live in src/data/benchmarks.json and the city rates in src/data/water-rates.json.
Where these numbers come from
Every constant, its value, and the document it was read out of.
water.combinedRate— 4.96 $/m³ (water + sewer)[TOM-REVIEW]City of Guelph 2026 volumetric water ($2.63/m³) + wastewater ($2.33/m³), rate By-law (2025)-21165 Table 3 — guelph.ca/living/environment/water/water-rates/. 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). Replaces the v2 placeholder of $4.00/m³, which the entry itself flagged for verification against exactly this schedule.water-rates.json— 16 municipalities, combined industrial water + sewer, August 2026Combined marginal cost of one extra cubic metre through the meter: volumetric water + volumetric sewer, for an industrial/commercial customer. 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). Standard industrial water + sewer rates as of August 2026, sourced from each municipality; rates typically rise annually.
Want the real number instead of the estimate?
This page gives you an estimate from numbers you already half-know. A meter gives you the real one. We will walk your floor, tell you what is worth measuring first, and put a figure on it — no charge, no obligation.
Book a site visitSee the water leak case studies
or call 1-833-QUANTFY (1-833-782-6839)