Is the sea water quality good in Cambridge?

Cambridge has 1 designated bathing water site(s) but insufficient seasonal data for a full GBWS. Check the EA's website for the latest real-time quality advisories.

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 Cambridge 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. Cambridge has 1 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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Cambridge — Bathing Water Quality 2025

What is the bathing water quality in Cambridge?

Cambridge has 1 designated bathing water site(s) in England, but insufficient seasons of data (fewer than 3) to compute a Gera Bathing Water Score. Latest classification data where available is shown below. Source: Environment Agency Bathing Water Quality API (OGL v3.0).

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

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Cambridge bathing water — FAQ

Is the sea water quality good in Cambridge?: Cambridge has 1 designated bathing water site(s) but insufficient seasonal data for a full GBWS. Check the EA's website for the latest real-time quality advisories.
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 Cambridge 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. Cambridge has 1 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)).