Corrected 2 October 2026 · version 2.0.0. The first version of this site made claims that were wrong. What changed and why · the original, kept
Waste as Resource logo corrected Waste as Resourceversion 2.0.0 · corrected

Overflows discharging at any one moment in 2024, on average

96 overflows2024 calendar yearestimatemedium confidence

This is the rate behind the counter on the home page, which adds up discharge time as you read, at the 2024 average.

844,375 site-hours of discharge in Welsh Water's 2024 return ÷ 8,784 hours in 2024 = 96.1. Discharges bunch up in wet weather, so at most hours the real number is far lower and in a storm far higher: it is an average, not a reading. The live count of overflows operating now is on the home page.

← All figures · Storm overflows: the plan