# Unlocated water loss

Utilities can't find leaks in pipes they never metered

Problem 0016 · Cities · Theme: Measurement · What it would take: A funded startup · Scope: Global · Editorial grade: High · Framed 21 September 2026 · Updated 22 September 2026 · Framed from public reporting

Utilities meter at the treatment works and at the customer's tap, and only coarsely in between: a district meter can say how much went missing across a whole area, not where. So loss is known as a percentage far more often than as a place, the response is scheduled rather than targeted (mains replaced by age, not by evidence), and too many leaks are found only when the road subsides or somebody rings.

## Who lives with it

Water utilities and municipal engineers · households in intermittent-supply cities · regulators setting loss targets

## Why now

A widely cited World Bank estimate, published in 2018, puts the water utilities produce but never bill, through physical leaks and commercial losses, at around 126 billion cubic metres a year, nearly $40 billion in lost value.

## Why it matters

The cheapest new water available anywhere is the water already treated, already paid for, and lost before it arrives. Turning a percentage into a location is most of the job, and it is an instrumentation and inference problem rather than a civil engineering one.

## From public reporting

- [What do private companies look for in a performance-based non-revenue water project?](https://blogs.worldbank.org/en/ppps/what-do-private-companies-look-performance-based-non-revenue-water-project), World Bank, 5 July 2018

## Cite it

“Utilities can't find leaks in pipes they never metered.” Ainna Problem Radar, problem 0016, 21 September 2026. https://ainna.ai/problems/utilities-cant-find-leaks-in-pipes-they-never-metered

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