For much of the UK, summer 2026 was another reminder that water scarcity is no longer an abstract future risk. For parts of the country, it marked the fourth drought period in the last five years. Prolonged heat and exceptionally dry conditions put growing pressure on already-stretched water resources.

For consumers, the consequences of water stress do not end with summer. They can show up later in larger bills and, for financially vulnerable households, greater difficulty keeping up with payments.

The latest headline figure puts water customer debt across England and Wales at GBP 2.9 Billion, unchanged from the previous year even as ~400,000 households cleared their debts. This data is a snapshot as of the end of March 2026, before this summer’s exceptional conditions were reflected in consumption, bills and payment cycles. The true impact may therefore only become visible in the months ahead.

Water scarcity and financial stress have something important in common: Both can build gradually, while their consequences may only become visible later. A larger or unexpected bill can then arrive at precisely the wrong time for a household already balancing energy, food, housing, fuel and other essential costs, many of which continue to rise.

Citizens Advice found that one in five water bill payers had struggled to afford their bill in the previous year. Among these households, 42 percent had cut back on groceries or energy, 35 percent were rationing water and 21 percent had fallen into water debt.

As the 2026 picture emerges, the question for customer operations leaders is not simply who is in debt, but more about understanding why their position has changed and what happens next.

From the Debt Book to the Customer Trajectory

Traditional collections asks: Who owes money, how much and for how long?

A more intelligent approach asks: What has changed in this customer's journey? What might be driving it? And what intervention could prevent a temporary setback from becoming persistent debt?

Answering this requires connecting signals from across the organization, bringing together consumption and billing patterns, payment behavior, repeat contacts, affordability indicators, vulnerability signals, and support and repayment histories.

A customer who has missed a single payment following an unusual bill needs a different response from one with sustained arrears and repeated failed repayment arrangements. The debt may look similar on a collections dashboard but the customer journey may be completely different.

Seeing the Customer Journey, Not Just the Account

For billing and collections teams, the challenge is not in recognizing that their functions are connected. They already are. It is making better use of the information generated before an account becomes a collections case – and using it to shape a more timely, empathetic response.

Ofwat reported 130,000+ billing complaints in 2024–25, making billing the water sector’s most common source of complaints. Its billing action plans call for proactive issue prevention, clearer communication and appropriate customer support.

The question is what happens to customer signals as people move between billing, service and collections. A disputed bill, unusual consumption, repeated contact or a missed payment may appear to be isolated events. Together, they can reveal changing circumstances.

Vulnerability is equally dynamic. An unexpected bill, income shock or growing financial pressure can change a customer’s ability to pay, even if they have never previously been identified as vulnerable.