GeraMarket / UK water company performance / Affinity Water
Affinity Water: Performance Report
Rank #5 of 19 UK water companies · GWSS 84/100 (Good) · Leakage 95 l/p/d · Interruptions 00:03:21/property · CRI 1.44 (Ofwat APR 2024-25 / DWI 2024)
How does Affinity Water perform compared to other UK water companies?
In Ofwat APR 2024-25 / DWI 2024, Affinity Water ranks #5 of 19 UK water companies with a Gera Water Service Score (GWSS) of 84/100 — Good, 13.2 points above the national median of 70.8/100. Key metrics: leakage 95 l/p/d, supply interruptions 00:03:21/property, Compliance Risk Index 1.44 (Ofwat APR / DWI 2024, OGL v3.0).
Leakage score
70.5/100
95 l/p/d
E&W avg: 109
▼ below avg · weight 40%
Interruptions score
98.8/100
00:03:21
E&W avg: 22 mins
▼ below avg · weight 30%
Water quality score
86.8/100
CRI 1.44
E&W avg: 3.72
▼ below avg · weight 30%
Affinity Water performance figures (Ofwat APR 2024-25 / DWI 2024)
| Measure | Value | vs England & Wales |
|---|---|---|
| Gera Water Service Score (GWSS) | 84/100 | Good (grade B) |
| Overall rank | #5 of 19 | vs national median GWSS 70.8/100 |
| Leakage | 95 l/p/d | ▼ below E&W avg 109 l/p/d |
| Supply interruptions | 00:03:21 | ▼ below E&W avg 22 mins |
| CRI (water quality) | 1.44 | ▼ below E&W avg CRI 3.72 |
| Region | South East | Ofwat regulatory area |
Affinity Water CRI trend (2021–2024)
Compliance Risk Index (lower = better). Source: Drinking Water Inspectorate (DWI) via DiscoverWater.co.uk.
| Year | CRI | vs E&W avg (3.72) |
|---|---|---|
| 2024 | 1.44 | ▼ below avg |
| 2023 | 1.09 | ▼ below avg |
| 2022 | 8.05 | ▲ above avg |
| 2021 | 1.44 | ▼ below avg |
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Frequently asked questions
- What is Affinity Water's GWSS score?
- Affinity Water scores 84/100 on the Gera Water Service Score (GWSS) in 2024-25 — Good (grade B), ranking #5 of 19 UK water companies. The score combines leakage (95 l/p/d, weight 40%), supply interruptions (3 mins, weight 30%), and water quality CRI (1.44, weight 30%) from Ofwat APR 2024-25 and DWI data.
- How much water does Affinity Water leak?
- Affinity Water lost 95 litres of water per property per day through leaks in 2024-25, below the England and Wales average of 109 l/p/d. Source: Ofwat Annual Performance Report 2024-25, via DiscoverWater.co.uk (OGL v3.0).
- How often does Affinity Water cause supply interruptions?
- In 2024-25, Affinity Water customers experienced an average of 00:03:21 of lost water supply per property from interruptions lasting 3+ hours — better than the national average of 22 mins. Source: Ofwat APR 2024-25 via DiscoverWater.co.uk.
- What is Affinity Water's Compliance Risk Index (CRI)?
- Affinity Water's CRI in 2024 was 1.44, below the England and Wales average of 3.72. The CRI measures overall performance against national drinking water quality standards (lower = fewer compliance failures). Source: Drinking Water Inspectorate (DWI), Jan–Dec 2024, via DiscoverWater.co.uk.
- How has Affinity Water's water quality changed over the past 4 years?
- Affinity Water's CRI (Compliance Risk Index) over the past 4 years: 2024: 1.44, 2023: 1.09, 2022: 8.05, 2021: 1.44. Lower CRI = fewer quality compliance failures. Source: Drinking Water Inspectorate (DWI), via DiscoverWater.co.uk.
Other South East water companies
Contains public sector information published by Ofwat / Drinking Water Inspectorate and licensed under the Open Government Licence v3.0. Source: Ofwat APR 2024-25 + DWI CRI 2024 (via DiscoverWater.co.uk) (Ofwat APR 2024-25 / DWI 2024, published June 2026 (Ofwat APR 2024-25)).