Anglian Water Services Limited is the regulated water and sewerage company for the East of England.
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Anglian Water's gross reported emissions rose from 265,219 to 297,156 tCO2e between 2022/23 and 2024/25. Its reported Scope 3 covers three categories, and capital carbon is reported only as a percentage. Pollution incidents rose 44%, from 307 in 2023 to 441 in 2024, and its rate of 57.17 per 10,000 km of sewer was nearly three times its 19.50 performance commitment. The Environment Agency rated it 2 stars. It was fined £2.65m in 2023 for sewage discharges from Jaywick, the ASA ruled an environmental advert misleading in 2023, and in 2024 it was convicted of failing to provide records to the Environment Agency.
Anglian Water scores 41/100 (Below expectations) on SINK's independent climate assessment, scored from public data only. Fees pay for the review, never the result. Last verified October 2026.
That places Anglian Water joint 343rd of 847 companies scored, and 7th of 11 in Water & Sewerage.
Where Anglian Water sits among water & sewerage peers.
Among the 11 major water & sewerage brands we've scored, Anglian Water sits 7th of 11.
Its three lowest-scoring questions, and what the evidence didn't show.
Company reports net operational carbon reduction (26.6% vs 2019/20) and capital-carbon reduction (66.1% vs 2010) but these diverge from rising physical tonnes.
Pollution incidents rose from 307 (2023) to 441 (2024, provisional).
Scope 3 covers only business travel (809 tCO2e), outsourced tankers (25,074), and electricity T&D losses (11,828) at 37,712 tCO2e total.
A score changes when the evidence does. We use new published evidence at the next rescore. Evidence that isn't public can count through an evidence review.
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Get in touch →Strongest on Carbon Footprint — Operations and Transparency & Accountability (8/10, 7/10). Weakest on Emissions Trajectory and Water Impact (2/10, 2/10).
The 3 companies in the sector scoring nearest above Anglian Water.
Scottish Water's operational emissions, audited to ISO 14064-1, fell from 462,000 tCO2e in 2006/07 to 220,000 tCO2e in 2024/25, and have been roughly flat for three years.
See the breakdown →Wessex Water reports operational and supply-chain emissions, including capital carbon.
See the breakdown →Northumbrian Water's net market-based operational emissions fell from 68.6 to 15.9 ktCO2e between 2019/20 and 2024/25, relying on renewable electricity and gas certificates, while gross location-based emissions moved from 163.3 to 152.6 kt.
See the breakdown →The formula and all 10 sources.
Same ten questions for every company. No private weighting.
SINK = (0.3 × Base + 0.7 × Performance) × Scale10 sources used in this assessment. All publicly available. Each row shows which of the ten questions it informed.
“This table meets requirements of the Streamlined Energy and Carbon Reporting (SECR) regulations and b. of the CDP disclosure.”
“The numbers reported have been verified by Achilles Carbon Reduce (powered by Toitū) Scheme (formerly CEMARS)”
“the site will produce around 29,000 MWh of power per year, all of which will be supplied to Anglian Water during the 15-year term”
“Anglian Water – 2 stars, the same as the previous year”
“failing, without reasonable excuse, to comply with a requirement to provide records to the Environment Agency”
“the ads omitted material information and were therefore misleading”
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Anglian Water Services Limited is the regulated water and sewerage company for the East of England. It was created on privatisation in 1989 and is headquartered in Huntingdon. Its filed accounts for the year to 31 March 2026 report revenue of £2,103.1m and an average of 6,053 full-time-equivalent staff. It is regulated by Ofwat and the Environment Agency.
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