The Serpentine - Hyde Park water quality history
Explore historical Environment Agency samples and annual bathing water classifications for The Serpentine - Hyde Park in City of Westminster.
The bathing area, known as the Lido, is a rectangular area about 100 metres long and 30 metres wide on the southern bank of the Serpentine. The beach is a hard man-made surface which has been fenced off for sunbathing, and gently slopes into the water.
- Available sample history
- 1998 to 2026
- Samples
- 582
- Latest official classification
- Good (2025)
Interactive charts are loading. The classification history is available below.
Annual classification history
Official assessments and historical estimates are labelled separately. Missing years are not filled in.
| Year | Classification | Assessment source |
|---|---|---|
| 2025 | Good | Official Environment Agency assessment |
| 2024 | Sufficient | Official Environment Agency assessment |
| 2023 | Sufficient | Official Environment Agency assessment |
| 2022 | Sufficient | Official Environment Agency assessment |
| 2021 | Sufficient | Official Environment Agency assessment |
| 2019 | Sufficient | Official Environment Agency assessment |
| 2018 | Sufficient | Official Environment Agency assessment |
| 2017 | Sufficient | Official Environment Agency assessment |
| 2016 | Sufficient | Official Environment Agency assessment |
| 2015 | Sufficient | Official Environment Agency assessment |
| 2014 | Good | Official Environment Agency assessment |
| 2013 | Good | Official Environment Agency assessment |
| 2012 | Excellent | Official Environment Agency assessment |
| 2011 | Excellent | Official Environment Agency assessment |
| 2010 | Excellent | Official Environment Agency assessment |
| 2009 | Good | Historical estimate |
| 2008 | Good | Historical estimate |
| 2007 | Good | Historical estimate |
| 2006 | Sufficient | Historical estimate |
| 2005 | Sufficient | Historical estimate |
| 2004 | Sufficient | Historical estimate |
| 2003 | Sufficient | Historical estimate |
| 2002 | Poor | Historical estimate |
| 2001 | Poor | Historical estimate |
| 2000 | Poor | Historical estimate |
| 1999 | Poor | Historical estimate |
| 1998 | Sufficient | Historical estimate |
Source: Environment Agency / Swimfo. Data retrieved 16 October 2026. Historical trends do not describe conditions today; check Swimfo and local notices for current advice.
Nearby bathing waters
- Ham and Kingston, River ThamesKingston upon Thames
- Hampstead Heath (Ladies Pond)City and County of the City of London
- Hampstead Heath (Mens Pond)City and County of the City of London
- Hampstead Heath (Mixed Pond)City and County of the City of London
- HoveThe City of Brighton and Hove
- SouthwickAdur