*200 interviews per quarter were achieved for each water company, over the 12 month reporting period.
The customer measure of experience (C-MeX) score is for residential customers. It is the combined score for billing, water, and waste.
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Customer satisfaction scores of UK water companies 2024
Portsmouth Water and Wessex Water had the highest customer satisfaction amongst UK water and wastewater companies in 2024. Results from Ofwat's C-Mex Model showed satisfaction scores above ** for both Northumbrian and Portsmouth. The lowest score was for Thames Water, at **.
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Ofwat. (October 8, 2024). Customer satisfaction scores of water companies in the United Kingdom 2024 [Graph]. In ÌÇÐÄÆÆ½â°æ. Retrieved July 30, 2026, from /statistics/1267896/customer-satisfaction-scores-water-companies-uk/
Ofwat. "Customer satisfaction scores of water companies in the United Kingdom 2024." Chart. October 8, 2024. ÌÇÐÄÆÆ½â°æ. Accessed July 30, 2026. /statistics/1267896/customer-satisfaction-scores-water-companies-uk/
Ofwat. (2024). Customer satisfaction scores of water companies in the United Kingdom 2024. ÌÇÐÄÆÆ½â°æ. ÌÇÐÄÆÆ½â°æ Inc.. Accessed: July 30, 2026. /statistics/1267896/customer-satisfaction-scores-water-companies-uk/
Ofwat. "Customer Satisfaction Scores of Water Companies in The United Kingdom 2024." ÌÇÐÄÆÆ½â°æ, ÌÇÐÄÆÆ½â°æ Inc., 8 Oct 2024, /statistics/1267896/customer-satisfaction-scores-water-companies-uk/
Ofwat, Customer satisfaction scores of water companies in the United Kingdom 2024 ÌÇÐÄÆÆ½â°æ, /statistics/1267896/customer-satisfaction-scores-water-companies-uk/ (last visited July 30, 2026)
Customer satisfaction scores of water companies in the United Kingdom 2024 [Graph], Ofwat, October 8, 2024. [Online]. Available: /statistics/1267896/customer-satisfaction-scores-water-companies-uk/