Ghana treats the water. Half of it never reaches a bill.
Sector reporting puts Ghana's non-revenue water near 54% of production — across a national utility running 88 urban systems and roughly 871,000 m³ of capacity a day, that is a staggering volume of treated water lost to leaks, illegal connections and metering failures. The utility side is moving: a telemetry control room and metering laboratory have opened in Accra, and "we only bill water that goes through meters" has become the official stance. addanode builds the layer that stance depends on: zone metering, night-flow analysis, pressure data and daily input-vs-billing reconciliation.
Three loss problems Ghanaian water operators recognise.
Production is metered; the middle is a mystery
Headworks meters say what left the plant, billing says what was paid for, and everything between is inference. District metered areas put a continuously read bulk meter on each supply zone, so the loss stops being one national percentage and becomes a ranked list of zones with names, each carrying its own input-vs-billed gap.
Rationing masks the leaks
Where supply is intermittent, zones that receive water only on some days can't be compared by monthly totals — a zone can look "efficient" simply because it was dry. Telemetered inlet meters timestamp exactly when each zone was charged and what flowed, so loss analysis works honestly even under rationing schedules.
Illegal connections thrive between meter reads
A connection made after the meter reader's visit earns free water until someone notices — often years. Night-flow trending catches the aggregate signature of unauthorised draw, and zone-by-zone billing gaps point enforcement sweeps at the neighbourhoods where they'll recover the most revenue.
Built for Ghanaian water infrastructure as it is.
- The telemetry direction is already set — we extend it. With a control room and metering lab now operating in Accra, the question for each region and scheme is how fast the zone layer follows. Our deployments extend the same logic outward: DMA inlet metering and pressure points reporting into dashboards your engineers see daily, exportable toward whatever central systems exist.
- Galamsey has made raw water part of the loss story. With the Water Resources Commission reporting some 60% of waterways contaminated, intakes face turbidity and pollution loads that raise treatment cost per cubic metre — which makes every lost megalitre downstream more expensive. The same telemetry platform carries raw-water quality sensing (turbidity, conductivity) where intakes need watching.
- PURC tariffs make evidence valuable. Tariff reviews and performance conversations go better with continuous, timestamped delivery records than with estimates — the same data that runs the loss programme documents the case.
- Existing meters are read, not replaced. Pulse and Modbus bulk meters, 4–20 mA pressure transmitters and existing loggers connect as they are; new instruments go only where zones have nothing to read. Buffering rides through dumsor and grid events so night-flow records never have holes.
Sector figures cited here come from published reporting on Ghana's water utility and regulator. The deployment pattern is our Southern African water build, adapted to Ghanaian schemes and supply regimes.
From a percentage to a repair schedule.
1 · Zone it
DMAs drawn with your engineers around existing tanks, boosters and trunk mains — supply-regime aware, so intermittent zones are measured fairly.
2 · Meter & connect
Inlet bulk meters and key pressure points telemetered over 4G or LoRaWAN, buffered locally, visible on one dashboard.
3 · Rank the zones
Night-flow league table and billing-gap map. Physical-loss zones get leak crews; commercial-loss zones get metering and enforcement attention.
4 · Prove recovery
Post-intervention re-measurement turns recovered water into the documented case for the next zone — and the next budget.
First zone typically live in 2–6 weeks; hardware pre-configured in Johannesburg, installed by your technicians or local partners under remote guidance, on the addaNet platform.
Ghana's water numbers, and what zone measurement adds
| Indicator | Figure | What it means for measurement |
|---|---|---|
| GWCL urban systems | 88 systems, ~871,000 m³ a day | A national balance is only as good as the bulk meters on each system's input |
| Non-revenue water | ~54% (industry reporting) | Roughly half the water produced is never billed — no regulator league table names the zone |
| Billing policy | "Only metered water is billed" | Customer meters allocate; they do not find the loss — zones do |
| Telemetry capability | Control room and metering laboratory established in Accra | The foundation exists; district-level night-flow measurement is the next layer |
| Catchment pressure | Galamsey affecting a large share of waterways | Raw-water quality at intakes belongs on the same dashboard as losses |
Where loss data earns its keep in Ghana.
Urban water systems — regional and district schemes inside the national utility's 88-system footprint, where a zone-level loss map directs scarce crews · Community and small-town schemes — CWSA-heritage systems billing their own consumers, for whom every unbilled megalitre is operating budget lost · Industrial estates and factories — Tema and Accra operations reconciling municipal supply against internal distribution, often alongside production monitoring · Sachet and bottling producers — high-volume water buyers whose intake meters should agree with their invoices.
Non-revenue water in Ghana — common questions
How bad is non-revenue water in Ghana?
Published sector reporting and utility case studies put losses around 54% of production — roughly half of all treated water. Against a global good-practice benchmark near 20%, the recoverable value is enormous, which is why metering and telemetry now sit at the top of the utility agenda.
Does DMA monitoring work with intermittent supply?
Yes — if it's designed for it. Telemetered inlet meters record when each zone was actually charged and what flowed during those windows, so zones are compared on like-for-like supplied hours rather than raw monthly totals. Manual monthly reads simply cannot do this, which is why rationed networks stay opaque without telemetry.
Where does night-flow analysis fit if zones aren't supplied at night?
In continuously supplied zones it works classically — the 2–4am inflow approximates leakage. In rationed zones, the equivalent is charge-window analysis: how fast a zone consumes when first charged, and whether tanks hold overnight. Both come free once the inlet meter is telemetered.
Can the same system watch raw-water quality at our intake?
Yes. Turbidity and conductivity sensors at intakes ride the same gateways and dashboard — increasingly relevant where galamsey-affected rivers push treatment costs up. One platform, from the river to the zone meter.
What does an NRW deployment cost in Ghana?
It scales with zones: a first deployment on one or two DMAs is quoted as a written cost band after a free remote assessment of your network map and existing metering. The pattern that works is worst-zone-first, with recovered water funding the rollout.
Is this different from your water telemetry offering?
Same platform, different question. Asset telemetry watches pumps, tanks and treatment plants; NRW monitoring watches the network's economics — input versus billed, zone by zone. Utilities generally end up wanting both on the one dashboard.
Turn 54% into a list of fixable zones.
Send us your scheme layout and supply regime. We'll propose a first DMA deployment that makes the losses visible — and rankable — within a quarter.