The verdict in three sentences
For a water utility billing 12,000 metered accounts in the Montreal region (industrial, commercial and institutional customers plus private networks in outlying municipalities), the real opportunity lies in estimated reads and billing lag, which leave consumption unbilled and cash tied up for weeks. A custom mobile meter reading and billing system, between CAD 150,000 and 300,000, with payment by Interac, pre-authorised debit and card, costs less than two years of commercial losses. Moving collection from 92 % to 96 % and cutting estimated reads in half is worth roughly CAD 1.4 M a year, which pays the project back in a few months.
Where a regional water utility loses revenue
Quebec requires metering of non-residential users, and many régies and private network operators around Montreal still read meters with handheld lists or spreadsheets. Office entry takes one to two weeks, paper invoices go out late and a share of accounts are billed on estimates for months. Each link in the chain loses revenue.
| Item | Assumption for 12,000 accounts | Estimated annual amount (2026 order of magnitude) |
|---|---|---|
| Billed revenue | Average bill of CAD 160 per month | CAD 23,040,000 |
| Unpaid at a 92 % collection rate | 8 % of billed amounts | CAD 1,843,200 |
| Estimated or wrong reads | 4 % of real consumption not billed | CAD 920,000 |
| Unregistered or stopped meters | 150 accounts, CAD 160 per month | CAD 288,000 |
| Manual entry and printing | 3 full-time staff | CAD 210,000 |
| Average delay from read to invoice | 15 to 25 days | Weaker cash flow |
These figures are estimates to recalculate with your own data, but they show that commercial losses often exceed CAD 2 M a year for a network of this size.
Options to digitise meter reading and billing
Several approaches coexist: an improved spreadsheet, generic billing software, a specialised utility billing vendor, or a custom application. The key criterion is payment integration, since most commercial customers pay by pre-authorised debit or online banking.
| Criterion | Spreadsheet and paper lists | Generic billing software | Custom application |
|---|---|---|---|
| Upfront cost | Near zero | CAD 30,000 to 80,000 | CAD 150,000 to 300,000 |
| Recurring cost | Data entry time | CAD 1,000 to 3,000 per month | Maintenance CAD 2,000 to 4,000 per month |
| Offline mobile reading with photo | No | Rarely | Yes, meter photo and GPS |
| Interac, PAD and card payments | No | Manual reconciliation | Integrated, automatic matching |
| Tiered and seasonal rates | Fragile formulas | Partial | Built to your rate schedules |
| E-mail and SMS invoices and reminders | No | Sometimes | Yes, about CAD 0.01 per SMS |
| Time to go live | Immediate | 1 to 2 months | 4 to 6 months |
Card and online payment fees usually range from 0.5 to 2.5 % depending on the method, a cost easily covered by faster collection and fewer cheques to process.
What brings collection and billed volume up
Three levers explain most observed gains. Smartphone reading with a meter photo removes estimated reads and disputes. Sending the invoice by e-mail or SMS the same day as the read, with a payment link, shortens payment time by several weeks. And enrolling customers in pre-authorised debit removes late payments for most of them. Add a follow-up list prioritised by amount due and age, and your staff focus on the right accounts.
Mini case study
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Marc, general manager of a regional water utility near Montreal, bills CAD 23,040,000 a year and collects 92 %. He launches a custom application at CAD 220,000, with CAD 3,000 of monthly maintenance and about CAD 6,000 a year of messaging. Realistic 12-month target: reach 96 % collection, i.e. CAD 921,600 more, and halve wrong reads, recovering CAD 460,000. After about CAD 14,000 of payment fees on the extra collections, the net annual gain exceeds CAD 1,300,000 for a first-year cost of CAD 262,000. Payback: roughly two to three months after go-live.
FAQ
How much does a custom water billing system cost in Montreal in 2026?
A custom mobile reading and billing system costs CAD 150,000 to 300,000 depending on the number of accounts and modules. Then plan for maintenance around CAD 2,000 to 4,000 a month.
Can customers pay by pre-authorised debit and Interac?
Yes, through a payment processor or your bank's PAD service, with fees around 0.5 to 2.5 % per transaction depending on the method. Each payment is matched automatically to the right invoice using the account reference.
Does the reading app work without coverage?
Yes, staff record readings and photograph meters offline, then sync once back in coverage, useful in basements and mechanical rooms. A reader handles 120 to 200 meters a day instead of 80 to 100 on paper.
Can we handle tiered, seasonal and institutional rates?
Yes, a custom build supports several rate schedules: consumption tiers, seasonal rates, minimum charges and institutional contracts. This configuration usually takes 5 to 8 days of development.
How long does migrating 12,000 accounts take?
Expect 4 to 6 months in total, including 4 to 6 weeks of migrating and cleaning the customer file. A pilot on one sector of 1,500 to 2,000 meters validates the read, invoice and payment chain.
Let's scope your project. Tell us your number of accounts, rate schedules and current collection rate, and we will price a scope, an indicative budget and a realistic timeline. 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.
