Marazion water quality history

Explore historical Environment Agency samples and annual bathing water classifications for Marazion in Cornwall.

Mounts Bay is on the south coast of Cornwall. There are four designated bathing waters located around the bay - Wherry Town, Penzance, Long Rock and Marazion. All the beaches are sandy resorts backed by sea defences. Marazion beach is approximately 880 metres wide. The Red River flows onto the centre of Marazion beach.

Available sample history
1988 to 2026
Samples
781
Latest official classification
Excellent (2025)

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Annual classification history

Official assessments and historical estimates are labelled separately. Missing years are not filled in.

Available annual results, newest first
YearClassificationAssessment source
2025ExcellentOfficial Environment Agency assessment
2024GoodOfficial Environment Agency assessment
2023GoodOfficial Environment Agency assessment
2022GoodOfficial Environment Agency assessment
2021GoodOfficial Environment Agency assessment
2019ExcellentOfficial Environment Agency assessment
2018ExcellentOfficial Environment Agency assessment
2017GoodOfficial Environment Agency assessment
2016GoodOfficial Environment Agency assessment
2015GoodOfficial Environment Agency assessment
2014GoodOfficial Environment Agency assessment
2013GoodOfficial Environment Agency assessment
2012GoodOfficial Environment Agency assessment
2011GoodOfficial Environment Agency assessment
2010GoodOfficial Environment Agency assessment
2009SufficientHistorical estimate
2008GoodHistorical estimate
2007GoodHistorical estimate
2006ExcellentHistorical estimate
2005ExcellentHistorical estimate
2004ExcellentHistorical estimate
2003ExcellentHistorical estimate
2002SufficientHistorical estimate
2001SufficientHistorical estimate
2000SufficientHistorical estimate
1999SufficientHistorical estimate
1998SufficientHistorical estimate
1997SufficientHistorical estimate
1996SufficientHistorical estimate
1995SufficientHistorical estimate
1994SufficientHistorical estimate
1993SufficientHistorical estimate
1992SufficientHistorical estimate
1991SufficientHistorical estimate
1990SufficientHistorical estimate
1989Not assessedHistorical estimate
1988Not assessedHistorical 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