Sewage Map

Harlyn Bay water quality and sewage map

Harlyn Bay is a designated coastal bathing water in Devon Cornwall and the Isles of Scilly. Its 2025 classification is Excellent. 3 sewage outlet records sit within 3 km of the monitoring point. Check the official advice before entering the water.

Excellent
2025 classification
1,988
Designated since
3
Outlets within 3 km
3
Linked to a live feed

The annual classification is in the highest quality class. The annual class is not a live test. The bathing-water point is an approximate official monitoring location, and 3 km is a straight-line search.

Check official bathing-water advice ↗How to read the evidence

Annual classification history

The rating was Excellent in 2025, the same as in 2024. A change between annual classes does not describe conditions today. A missing class stays unknown, and a newly designated site may not have a full history.

YearClassification
2025Excellent
2024Excellent
2023Excellent
2022Excellent
2021Excellent

Sewage outlets within 3 km

Filter by the latest company report. The map follows the filters. This is a location search, not a list of outlets proven to affect Harlyn Bay, and it does not include every possible source of pollution.

Filters apply to the map and list. Recent stops need a current report and a recorded stop time. They do not show whether water is safe.

Showing 3 of 3 outlets

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Before you visit

  1. Open the official bathing-water profile for current advice.
  2. Read local signs and check local conditions.
  3. Use the Swim Healthy guidance to reduce open-water risks.

Designation and a map point do not establish parking, lifeguard cover, access or a safe route. A stopped overflow report does not mean that the bathing water is safe.

All outlet records within 3 km of Harlyn Bay

3 outlet records in alphabetical order. Each link opens the outlet page with its latest report and annual history.

Sources and dates

Bathing-water file updated 6 July 2026. Source checked 9 September 2026. Outlet spill figures refer to 2025. Monitoring reference: UK32900. © Environment Agency copyright and/or database right 2015. All rights reserved. Used under the Open Government Licence v3.0.

Environment Agency monitoring locationsAll sourcesReport pollution

Questions about Harlyn Bay

Is Harlyn Bay safe to swim in today?
This page cannot answer that. The annual classification describes a longer-term record, and an outlet report describes monitor activity at one outlet. Check the official bathing-water profile, local signs and current conditions before entering the water.
What does the Harlyn Bay classification mean?
The annual classification is in the highest quality class. The Environment Agency sets the class from water samples taken over several bathing seasons, not from a single visit.
Has the water quality at Harlyn Bay changed?
The rating was Excellent in 2025, the same as in 2024. We hold standard classifications for 5 years, from 2021 to 2025. The table above lists every year in the record.
Are there sewage outlets near Harlyn Bay?
3 outlet records fall within 3 km of the monitoring point. The nearest is St Merryn CSO St Merryn, about 1.1 km away. Distance alone does not show whether an outlet affects this water.
Which outlets near Harlyn Bay are linked to a live feed?
3 of the 3 nearby records are matched to a monitor in a company live feed. A link does not mean the monitor is working now. Use the status filters above to check the latest report and its date. A stopped report does not mean the bathing water is safe.