“Are you F**ING KIDDING ME, DŴR CYMRU?! Just saw the latest sewage data for Wales and I am absolutely LIVID. Nearly ONE MILLION HOURS of sewage dumped last year – 968,340 hours, to be precise! That’s not a typo, that’s nearly 110 YEARS of continuous sht flowing into our rivers and seas in just ONE year. And 118,276 separate spills. Every five minutes, another load of their filth.

And my own backyard, the River Usk? This isn’t just any river, it’s a bloody SAC and SSSI, supposed to be PROTECTED. But apparently, that means nothing to these clowns. 14,743 hours of sewage, 1,761 incidents on the Usk alone! I swim in that river! What the hell are they doing?!

They’re the WORST in the UK for spill duration, and their “plans” are a joke. They’re “playing catch-up” while our waters die and people get sick. This isn’t just numbers on a chart; this is our environment, our health, our bloody future. This is an absolute disgrace. Heads need to roll. #DirtyWaterWales #DwrCymruShame #SaveTheUsk #SewageScandal #EnoughIsEnough

Infographic: Welsh Water Pollution by the Numbers

WALES UNDER WATER

An analysis of Dŵr Cymru’s sewage pollution in 2024

The Scale of the Problem

968,340

Total Hours of Sewage Spills

The highest of any UK water company in 2024.

118,276

Total Sewage Spill Events

That’s one spill every 5 minutes on average.

A Worsening Trend

Key pollution metrics show a significant increase from 2023 to 2024, contradicting claims of improvement and highlighting a deteriorating situation for Welsh waters.

Metric 2023 Data 2024 Data Change (%)
Total Sewage Spill Hours 916,000 968,340 +5.7%
Total Sewage Spills 110,147 118,276 +7.4%
Total Pollution Incidents (NRW) 107 132 +23.4%
Average Spills per CSO 55.3 48.9 -11.6%
Average Duration per Spill (hours) 7.1 (2022) 8.2 +15.5%

Note: The Dŵr Cymru claim of a 7% reduction in stormwater spill hours for 2024 contradicts the increased total hours reported by NRW and Surfers Against Sewage for overall sewage discharges.

Pollution Hotspots: The Worst Offenders

Top 3 CSOs by Spill Duration

These three sites alone were responsible for a combined discharge period equivalent to over 1.5 years in 2024.

Top 3 Affected Constituencies

Certain regions bear a disproportionate burden, with pollution times equivalent to over a decade in a single year.

A Widespread Issue

Beyond the worst offenders, numerous popular bathing spots and rivers across Wales experienced a high frequency of sewage discharges in 2024, highlighting the pervasive nature of the problem.

Rank Location Discharges in 2024

Focus on River Usk: A Protected River Under Threat

The River Usk, designated as a Special Area of Conservation (SAC) and Site of Special Scientific Interest (SSSI), is a vital ecosystem. Despite its protected status, it experienced 14,743 hours of sewage discharge from 1,761 incidents in 2024. Below are the worst CSOs contributing to this pollution.

CSO Name Hours Spilled (2024) Incidents (2024)

The Human Cost

1,853

Illness Reports in the UK

Linked to sewage exposure in 2024, with 79% confirmed by doctors.

Ecological Chaos: Sewage discharges poison wildlife, damage sensitive river habitats, and spread harmful bacteria, leaving visible signs like sewage fungus.

Severe Sickness: Illnesses range from gastrointestinal bugs to life-threatening conditions requiring hospitalization and surgery.

Economic Impact: The cost of sickness from lost productivity alone is estimated at nearly £500,000 for the UK economy.

Regulation vs. Reality

Despite regulatory action, performance continues to decline, while the cost and scale of fixing the aging infrastructure present a monumental challenge.

Regulatory Action

Natural Resources Wales has downgraded Dŵr Cymru’s rating, issued fines, and pursued prosecutions for persistent pollution.

Company Response

Dŵr Cymru plans to invest £889M on overflows by 2030, but claims full removal would cost an “unaffordable” £9-14 Billion.

The Challenge

Dŵr Cymru’s spill reduction targets are less ambitious than other UK companies, suggesting a long-term acceptance of higher pollution levels in Wales while they “play catch-up”.