Deal Castle water quality history

Explore historical Environment Agency samples and annual bathing water classifications for Deal Castle in Dover.

Once one of the busiest ports in England, Deal is now a small resort on the Kent coast about 14 km north east from Dover. There is a long pier, seafront promenade and a pebble beach with small fishing boats pulled up on the shingle. Along the seafront there are a range of facilities.

Available sample history
1988 to 2026
Samples
755
Latest official classification
Good (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
2025GoodOfficial Environment Agency assessment
2024PoorOfficial Environment Agency assessment
2023SufficientOfficial Environment Agency assessment
2022GoodOfficial Environment Agency assessment
2021GoodOfficial Environment Agency assessment
2019ExcellentOfficial Environment Agency assessment
2018ExcellentOfficial Environment Agency assessment
2017ExcellentOfficial Environment Agency assessment
2016ExcellentOfficial Environment Agency assessment
2015ExcellentOfficial Environment Agency assessment
2014ExcellentOfficial Environment Agency assessment
2013GoodOfficial Environment Agency assessment
2012GoodOfficial Environment Agency assessment
2011GoodOfficial Environment Agency assessment
2010GoodOfficial Environment Agency assessment
2009GoodHistorical estimate
2008GoodHistorical estimate
2007GoodHistorical estimate
2006GoodHistorical estimate
2005GoodHistorical estimate
2004GoodHistorical estimate
2003GoodHistorical estimate
2002GoodHistorical estimate
2001GoodHistorical estimate
2000GoodHistorical estimate
1999PoorHistorical estimate
1998PoorHistorical estimate
1997PoorHistorical estimate
1996PoorHistorical estimate
1995PoorHistorical estimate
1994PoorHistorical estimate
1993PoorHistorical estimate
1992PoorHistorical estimate
1991PoorHistorical estimate
1990PoorHistorical 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