How Watergenius boosted in-person payments with Mollie and Odoo
E-commerce
Partner:Sito web


“My number one goal is making life easier for my people. That’s always top of my mind."
Terry De Reydt
About Watergenius: A trusted name in Belgian water treatment
For 35 years, Watergenius has been an established leader in the Belgian water treatment industry. The core of their business is a team of 60 employees, including 32 field technicians, who visit 55,000 homes and commercial properties across the country to service and maintain water softener systems.
At the heart of this operation is Terry De Reydt, the company’s operations lead. Having overseen the service team’s growth from a single technician to the large-scale operation it is today, his mission has always been clear.
“My number one goal is making life easier for my people,” Terry says. “That’s always top of my mind."
But as the company grew, its old payment system was doing the exact opposite.
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The challenge: A disconnected, frustrating system
Watergenius was held back by unreliable payment terminals that created headaches for everyone, from the technicians in the field to the finance team in the back office.
Unreliable hardware and service: The previous terminals were plagued with technical issues. When replacements were finally sent, they often created more problems. “They simply replaced one problem with another,” Terry says. “It was incredibly frustrating.”
The cost of manual errors: Technicians had to manually key in the payment amount and a unique reference code for every transaction. “One wrong number, and our finance team had to spend hours figuring it out,” says Terry. These inevitable human mistakes cost valuable time and created reconciliation nightmares.
Poor connectivity: Frequent connection issues made it impossible for technicians to take payments on-site, forcing the company to chase invoices later and creating a frustrating final step for both customers and employees.
The result was a slow, inefficient process that frustrated employees and delayed cash flow. Terry knew it was time for a change.

The solution: an integrated system built for people
Watergenius decided to modernise its entire operational software by moving to the Odoo ERP. That’s when Terry saw a bigger opportunity.
“I had this crazy thought,” he recalls, “Why not combine our new ERP with a modern payment system and finally make life easy for my technicians?”
Working with integration partner Applix, Watergenius seamlessly connected Mollie’s POS solution directly into their Odoo field service module. The new workflow is beautifully simple:
A technician completes a job on their Odoo work order.
The exact payment amount and reference are automatically pushed to the Mollie terminal.
The customer pays via card or their phone.
The payment is instantly recorded and reconciled in Odoo.
There are no manual entries. No risk of errors. No extra steps. It just works.
The results: a company-wide transformation
By integrating Mollie and Odoo, Watergenius didn’t just get a new payment system; they transformed their entire field service operation.
Improved on-site payments and cash flow
Making it easier to pay had an immediate impact on the business. The company saw a 3 percentage point increase in customers paying on the spot (from 55% to 58%). With 200 service actions per day, that translates to roughly 1,300 additional payments per year that the team no longer has to chase.
Streamlined back-office operations
The finance team felt the benefits immediately. “Suddenly, they had a straight match for every payment,” says Terry. “They didn't have to search for transactions on the bank statement anymore. They were very happy with the change.”
Happier, more efficient technicians
The biggest win for Terry was the reaction of his team. With a reliable tool and no connection issues, the field team can now focus on the customer, not on troubleshooting their terminal.
“The most important feedback came from my technicians,” Terry explains. “They were so happy. They said, ‘It’s a great system. It just works.’ And happy people are what we need.”
A foundation for scalable growth
The automation has created a powerful platform for the future. “The automation allows us to scale smartly,” Terry explains. “We can grow our team of technicians on the road without having to grow our back-office team at the same rate.”

Looking to the future
With a vastly improved system in place, Watergenius is set up for the next chapter of its growth.
“For any business with a field team, my advice is simple: stop letting payments be a point of friction,” Terry says. “Integrating Mollie and Odoo was the best decision we made for our people, and therefore, for our business.
And when asked if he would recommend the Mollie and Odoo integration to other businesses, Terry’s answer is confident, clear, and somewhat familiar.
“Just do it.”
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