Municipal Water Mains · The full campaign
Non-Revenue Water (NRW) Program for BC utilities.
Treated water that earns nothing — leaked, unmeasured, or unbilled — commonly runs 10–30% of production. The NRW program is the umbrella: water balance to size the problem, zone data to rank it, every detection method in this hub to locate it, and re-measurement to prove what came back.
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Why utilities choose it
- One program, every method, sequenced for payback
- Real losses separated from apparent (metering/billing) losses
- Recovered water priced against production and capacity
- Quarterly numbers your council can actually read
Built for
How it runs
- 1
Water balance
AWWA M36-style audit: production versus billed consumption, losses split into real (leakage) and apparent (meter under-registration, billing gaps). Our water loss audit and meter diagnostics services feed this stage. The output is the size and shape of the problem.
- 2
Rank the system
Zone metering, night flows, and aerial corridor screening rank where the real losses concentrate. Budget goes where the water is — never evenly.
- 3
Locate & repair cycle
The detection stack deploys in payback order — appurtenance cleanup, logger campaigns, acoustic surveys, step tests, transmission specials — feeding your repair crews a steady, ranked pipeline of confirmed leaks.
- 4
Measure the recovery
Night flows re-read, balance re-run, recovered volume priced at production cost. The program reports in cubic metres and dollars — and resets its own targets for the next cycle.
Ground crews + aerial screening, one company
Leak.ca has pinpointed BC water leaks on the ground since 1999 — and now screens whole corridors from the air first when the network scale justifies it. Our drone thermal water main survey ranks kilometres into suspect zones; the crews on this page turn those zones into paint marks. One accountable program from flight to dig sheet — see the full municipal water main hub.
Utilities ask
What exactly counts as non-revenue water?
Everything produced that doesn't end up billed: real losses (leakage from mains, services, appurtenances, reservoir overflow), apparent losses (meters under-registering, billing data gaps, unauthorised use), and unbilled authorised use (flushing, firefighting). The split matters enormously — real losses are fixed with detection and repair; apparent losses are fixed with meter and billing work; the fixes share no budget. The water balance exists to make that split before money gets spent on the wrong half.
Is 10–30% loss really normal? Where do we likely sit?
Industry reporting consistently puts typical systems in that band, with well-managed networks below it and older, hillier, or long-neglected systems above. BC's mix — postwar AC pipe, mountain pressure zones that stress mains, and small systems with thin staffing — spans the whole range. Your own production and billing records, run through a proper balance, answer the question for your system in weeks; guessing is free and worth it.
What does recovered water actually save a municipality?
Three stacked values: the marginal production cost of every cubic metre no longer leaked (treatment, pumping energy, chemicals); deferred capital where supply or treatment capacity is tight — recovered leakage is new capacity at a fraction of expansion cost; and resilience under drought restrictions, where every leaked litre is a litre your residents were told not to use. Programs are designed so located-leak recovery outruns program cost — that's the point of payback-ordered sequencing.
How long does an NRW program take to show results?
First confirmed leaks typically land within the first field weeks (appurtenance and logger phases produce early wins), first measurable night-flow reductions within the first quarter, and the balance-level story over a year as repair volume accumulates. It is a program, not an event — which is also why we report quarterly in council-readable numbers: volumes, dollars, and a ranked map of what's next.
Related municipal services
District Metered Area (DMA) Leak Detection
Carve the network into measurable zones and the leaks have nowhere to hide. DMA support from boundary design and minimum night flow analysis through to the acoustic work that converts a high-MNF zone into pinpointed repairs.
View serviceAcoustic Water Main Leak Survey
Systematic acoustic survey of municipal distribution networks — correlators, ground microphones, and listening points worked block by block until every leak on the route list has a paint mark and a record. The backbone method of every serious water loss program since long before anything flew.
View serviceLeak Noise Logger Programs
Noise loggers deployed across the network — magnetically mounted in valve chambers and on hydrants, listening through the quiet hours night after night. Lift-and-shift campaigns or permanent coverage, with every point of interest ranked before a crew ever mobilises to correlate.
View serviceHydrant & Valve Leak Survey
The fittings leak too — and they lie. Passing gate valves mimic main leaks, hydrant drain weeps run for years uncounted, and chamber floods get blamed on groundwater. A systematic appurtenance survey cleans up both the losses and the false signals confusing every other method.
View service← Municipal water main hub·Complete guide·Government programs
By BC region
Non-Revenue Water (NRW) Program across BC
Dedicated local pages for every city we serve:
Scope it in one call
System size, pipe stock, loss picture — and a firm program quote, usually in one conversation.