Dwr Cymru Welsh Water

40Mixed / Improving· Provisional

0 followersWater & sewerage utility·Cardiff, United Kingdom·Founded 2001

www.dwrcymru.com

Not-for-profit water and sewerage company serving 3.1 million customers across Wales and parts of Herefordshire, owned by Glas Cymru — a company limited by guarantee with no shareholders — with surpluses reinvested in services.

40/100

Mixed / Improving· Provisional

ClimateTicker Green Score · how it's calculated

Greenwashing risk: mediumData confidence: medium

Why it's on ClimateTicker

Welsh Water is a not-for-profit water utility with genuine structural advantages — no shareholder extraction, surpluses reinvested — and an ambitious self-declared target of 90% carbon reduction by 2030, plus energy neutrality aspirations. However, its core operations generate significant greenhouse gas emissions (energy-intensive pumping and treatment, methane from wastewater) and its environmental record is marred by serial, prosecuted sewage pollution events that directly contradict its green marketing. The gap between stated ambition and verified on-the-ground performance is wide enough to warrant meaningful caution.

laggardWelsh Water is a regulated monopoly utility owned by Glas Cymru (a company limited by guarantee with no shareholders) that charges customers in Wales and parts of Herefordshire for drinking water supply and sewage collection/treatment; all surpluses are reinvested into services and infrastructure rather than distributed as dividends.

Commitments & Certifications

other: Self-declared target only — not validated ↗other: Regulatory performance commitment (AMP8) ↗

Controversy & Greenwashing Watch

highGwent Levels Protected Habitat Pollution — £250,000 Fine

Welsh Water pleaded guilty to repeatedly discharging raw sewage into a protected SSSI/SAC/Ramsar saltmarsh near Magor between January 2023 and January 2024, with officers witnessing illegal pumping directly onto the saltmarsh.source ↗

mediumCumulative NRW Prosecution Fines Exceeding £1.93M Since 2015

NRW's own pollution incident report documents ten prosecutions and over £1.93 million in fines levied against Welsh Water between 2015 and 2025, reflecting a persistent pattern of regulatory non-compliance.source ↗

highOfwat £40M Penalty for Misleading Regulators

In December 2024, Ofwat ordered Welsh Water to pay £40 million after a regulatory investigation found it had misled customers and regulators on key environmental performance commitments including leakage and water consumption targets.source ↗

high800+ Sewage Permit Breaches — £1.35M Fine (reduced on appeal)

Welsh Water pleaded guilty to over 800 breaches of its environmental discharge permits covering 2020–2021 monitoring data, with NRW finding systemic data quality failures; originally fined £1.35M, reduced on appeal to £120,000 plus costs.source ↗

mediumNRW Environmental Star Rating Downgrade (4★ → 2★)

Natural Resources Wales downgraded Welsh Water from a four-star rating in 2020 to two stars in both 2022 and 2023, with 2023 recording the company's worst-ever performance on environmental metrics and a decline in incident self-reporting.source ↗

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