Is the sea water quality good in Thanet?

Thanet has a Gera Bathing Water Score of 92/100 (7 of 13 rated sites Excellent, 0 Poor) for the 2025 season. A GBWS of 92 reflects a combination of current classification (weighted 60%) and multi-season consistency across all assessed seasons, up to six from 2019–2025 (weighted 40%). This is a high score, indicating consistently good water quality across the area.

What does the Gera Bathing Water Score mean?

The Gera Bathing Water Score (GBWS) combines two components from Environment Agency rBWD annual compliance classifications (key-free open data, OGL v3.0): (1) latest classification score (Excellent=100, Good=75, Sufficient=50, Poor=25), weighted 0.6; and (2) pass-rate across every assessed season available for the site (up to six: 2019, 2021–2025; the proportion rated Sufficient or above), weighted 0.4. Formula: GBWS = round(0.6 × latest_score + 0.4 × pass_rate × 100). Sites with fewer than 3 assessed seasons are shown as 'insufficient data'. The 2020 bathing season was cancelled due to COVID-19 and is excluded. LA-level scores are the mean GBWS of all sites within the LA that have sufficient data. Source: EA BWQ API, seasons 2019, 2021–2025.

How are Thanet bathing waters classified?

The Environment Agency classifies each designated bathing water under the Revised Bathing Water Directive (rBWD): Excellent, Good, Sufficient, or Poor, based on 4 seasons of E. coli and intestinal enterococci samples. Thanet has 13 designated site(s). Annual classifications are published on the EA's Bathing Water Quality platform.

When is the bathing season?

The official bathing season in England runs from mid-May to the end of September each year. The EA monitors water quality weekly during the season. Outside the season, monitoring is not required and advisories may not be current.

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Thanet — Bathing Water Quality 2025

Gera Bathing Water Score: 92/100

What is the bathing water quality in Thanet?

Thanet has a Gera Bathing Water Score of 92/100 for the 2025 bathing season, based on 13 EA-rated sites: 7 Excellent, 5 Good, 1 Sufficient, 0 Poor. Source: Environment Agency Bathing Water Quality API (OGL v3.0). Gera re-dates this annually.

Source:Environment Agency — Bathing Water Quality API·as of bathing season 2025 (latest completed season)updated annually (last: 20 June 2026)

Gera Bathing Water Score92 / 100Ranked 38 of 68 local authorities. 7 Excellent, 0 Poor (2025 season).How this index is calculated

Bathing water sites in Thanet

EA bathing water classifications — Thanet, 2025 season
Site	Type	2025 rating	GBWS	Seasons
Botany Bay, Broadstairs	Coastal	Excellent	100/100	6
Joss Bay, Broadstairs	Coastal	Excellent	100/100	6
Margate Fulsam Rock	Coastal	Excellent	100/100	6
Minnis Bay, Birchington	Coastal	Excellent	100/100	6
Ramsgate Sands	Coastal	Excellent	100/100	6
Ramsgate Western Undercliffe	Coastal	Excellent	100/100	6
Westbrook Bay, Margate	Coastal	Excellent	100/100	6
Broadstairs, Stone Bay	Coastal	Good	85/100	6
Broadstairs, Viking Bay	Coastal	Good	85/100	6
Margate The Bay	Coastal	Good	85/100	6
St Mildred's Bay, Westgate	Coastal	Good	85/100	6
Walpole Bay, Margate	Coastal	Good	85/100	6
West Bay, Westgate	Coastal	Sufficient	70/100	6

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Thanet bathing water — FAQ

Is the sea water quality good in Thanet?: Thanet has a Gera Bathing Water Score of 92/100 (7 of 13 rated sites Excellent, 0 Poor) for the 2025 season. A GBWS of 92 reflects a combination of current classification (weighted 60%) and multi-season consistency across all assessed seasons, up to six from 2019–2025 (weighted 40%). This is a high score, indicating consistently good water quality across the area.
What does the Gera Bathing Water Score mean?: The Gera Bathing Water Score (GBWS) combines two components from Environment Agency rBWD annual compliance classifications (key-free open data, OGL v3.0): (1) latest classification score (Excellent=100, Good=75, Sufficient=50, Poor=25), weighted 0.6; and (2) pass-rate across every assessed season available for the site (up to six: 2019, 2021–2025; the proportion rated Sufficient or above), weighted 0.4. Formula: GBWS = round(0.6 × latest_score + 0.4 × pass_rate × 100). Sites with fewer than 3 assessed seasons are shown as 'insufficient data'. The 2020 bathing season was cancelled due to COVID-19 and is excluded. LA-level scores are the mean GBWS of all sites within the LA that have sufficient data. Source: EA BWQ API, seasons 2019, 2021–2025.
How are Thanet bathing waters classified?: The Environment Agency classifies each designated bathing water under the Revised Bathing Water Directive (rBWD): Excellent, Good, Sufficient, or Poor, based on 4 seasons of E. coli and intestinal enterococci samples. Thanet has 13 designated site(s). Annual classifications are published on the EA's Bathing Water Quality platform.
When is the bathing season?: The official bathing season in England runs from mid-May to the end of September each year. The EA monitors water quality weekly during the season. Outside the season, monitoring is not required and advisories may not be current.

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Contains public sector information published by Environment Agency and licensed under the Open Government Licence v3.0. Source: Environment Agency — Bathing Water Quality API (bathing season 2025 (latest completed season), published 2026 (annual publication)).