The verdict in three sentences
A water network of 18,000 connections around Amsterdam loses far less water than an African peri-urban network, but still leaks revenue through estimated readings, unregistered connections and slow collections. Custom software at 60,000 to 140,000 EUR links mobile or smart meter reading with photo proof, billing, online payment by iDEAL, direct debit or card and dunning. Recovering just 1 to 2 points of non-revenue water and cutting arrears pays back the project within one to two years.
Where unbilled water comes from
Non-revenue water combines physical losses (leaks) and commercial losses (water consumed but not billed or not collected). Software acts mainly on commercial losses. In the Netherlands, total non-revenue water is typically 5 to 8%, but on a small network with older meters, a share of readings is still estimated, and every estimate generates disputes and corrections.
| Cause of loss | Share of non-revenue water (2026 estimate) | Symptom | Software response |
|---|---|---|---|
| Estimated or mistyped readings | 15 to 25% | Disputed bills | Timestamped, geotagged meter photo or smart meter feed |
| Stuck or faulty meters | 10 to 20% | Zero consumption for months | Alert after 2 identical readings |
| Unregistered connections | 5 to 10% | Customers missing from the file | Connection map and route-based reading |
| Uncollected bills | 15 to 25% | Arrears over 90 days | Email and SMS reminders, payment link, payment plans |
| Network leaks | 35 to 50% | Production vs consumption gap by district | District metered area balance |
Collections are the second workstream. When customers must log into a portal to pay, part of the invoices drift into arrears. A payment link sent with the invoice, plus automatic direct debit offers, shortens collection by several weeks.
Modules and budget
| Module | Scope | Indicative 2026 budget | Timeline |
|---|---|---|---|
| Customer and meter register | Data migration, connections, geolocation | 10,000 to 22,000 EUR | 4 to 6 weeks |
| Reading app and smart meter import | Routes, photo, offline mode, reading checks | 12,000 to 27,000 EUR | 5 to 6 weeks |
| Billing | Tariff bands, fixed charges, PDF and email invoices | 12,000 to 30,000 EUR | 4 to 6 weeks |
| Online payment | iDEAL, SEPA direct debit, card, automatic matching | 10,000 to 25,000 EUR | 3 to 5 weeks |
| Collections and restrictions | Reminders, payment plans, regulated disconnection workflow | 8,000 to 20,000 EUR | 3 to 4 weeks |
| Dashboard | Non-revenue water by district, collection rate | 8,000 to 16,000 EUR | 2 to 3 weeks |
Maintenance and hosting then cost 1,500 to 3,500 EUR per month. Readers use standard smartphones, and the app works offline for the full route. Under Dutch rules, disconnection of household water is heavily restricted, so the collections module focuses on payment plans and debt counselling referrals rather than cut-offs.
Before and after go-live
| Indicator | Common starting point | 12-month target |
|---|---|---|
| Non-revenue water | 8% | 6 to 7% |
| Estimated readings per cycle | 10 to 15% of meters | Under 3% |
| Collection rate at 60 days | 88 to 92% | 96 to 98% |
| Time from reading to invoice | 10 to 15 days | 2 to 3 days |
| Billing complaints | 3 to 5% of customers | Under 1.5% |
Mini case study
Sanne heads a small water operator serving 18,000 connections around Amsterdam. The average bill is 30 EUR per month, about 6,500,000 EUR billed per year, with a 60-day collection rate of 90%. Raising collection to 96% brings in about 390,000 EUR more cash per year, part of which would otherwise be written off. The project, costed at 110,000 EUR plus 2,500 EUR of monthly maintenance (30,000 EUR per year), pays back in about four months of improved collections, before counting lower non-revenue water.
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FAQ
How much does billing software for a water utility cost in 2026?
A custom build costs 60,000 to 140,000 EUR depending on the number of connections and modules. Maintenance and hosting then run at 1,500 to 3,500 EUR per month.
Does meter reading work without mobile coverage?
Yes, the app stores readings and photos for the whole route, then syncs at the depot or as soon as coverage returns. Smart meter data can be imported alongside manual readings. A reader handles 150 to 200 meters per day.
Can customers pay online?
Yes, each invoice email contains an iDEAL or card payment link, and direct debit can be offered at sign-up. Payments are matched automatically to invoices, removing 2 to 4 days of manual reconciliation per month.
How are unpaid bills handled?
After 2 reminders, the software proposes a payment plan and flags the account for follow-up under the applicable consumer protection rules. Thresholds, for example 60 days overdue, are configurable.
How long until go-live?
Plan 4 to 6 months, with a pilot route covering 1,000 to 2,000 connections. Migrating the existing customer file is often the longest step.
Let's scope your project. Tell us your number of connections, tariff structure and payment methods: we will cost a scope between 60,000 and 140,000 EUR with a 4 to 6 month plan. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.
Mohamed Bah
Fondateur, Kolonell
Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.
