Penzance water quality and sewage map
Penzance is a designated coastal bathing water in Devon Cornwall and the Isles of Scilly. Its 2025 classification is Excellent. 5 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
- 5
- Outlets within 3 km
- 5
- 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.
Annual classification history
The rating changed from Good in 2024 to Excellent in 2025. 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.
| Year | Classification |
|---|---|
| 2025 | Excellent |
| 2024 | Good |
| 2023 | Good |
| 2022 | Good |
| 2021 | Good |
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 Penzance, 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 5 of 5 outlets
Open full map- Chyandour Spst Pscsoeo PenzanceCurrent status unknown
South West Water · Mounts Bay
2025 annual record:1spill0.8hours - Finns CSO PenzanceCurrent status unknown
South West Water · Local Stream (S)
2025 annual record:52spills97.1hours - Gulval Trevarrack Lane CSO PenzanceCurrent status unknown
South West Water · Local Stream (S)
2025 annual record:48spills20.8hours - Bolitho Rd CSO PenzanceCurrent status unknown
South West Water · Surface Water Drain to Chyandr
2025 annual record:106spills329.5hours - Longrock Ind Estate SPS Pscsoeo LongrockCurrent status unknown
South West Water · Mounts Bay (C)
2025 annual record:6spills3.7hours
No outlets match these filters.
Before you visit
- Open the official bathing-water profile for current advice.
- Read local signs and check local conditions.
- 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 Penzance
5 outlet records in alphabetical order. Each link opens the outlet page with its latest report and annual history.
- Bolitho Rd CSO PenzanceSurface Water Drain to Chyandr · 106 spills in 2025
- Chyandour Spst Pscsoeo PenzanceMounts Bay · 1 spill in 2025
- Finns CSO PenzanceLocal Stream (S) · 52 spills in 2025
- Gulval Trevarrack Lane CSO PenzanceLocal Stream (S) · 48 spills in 2025
- Longrock Ind Estate SPS Pscsoeo LongrockMounts Bay (C) · 6 spills in 2025
Sources and dates
Bathing-water file updated 6 July 2026. Source checked 9 September 2026. Outlet spill figures refer to 2025. Monitoring reference: UK30400. © Environment Agency copyright and/or database right 2015. All rights reserved. Used under the Open Government Licence v3.0.
Questions about Penzance
- Is Penzance 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 Penzance 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 Penzance changed?
- The rating changed from Good in 2024 to Excellent in 2025. 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 Penzance?
- 5 outlet records fall within 3 km of the monitoring point. The nearest is Chyandour Spst Pscsoeo Penzance, about 0.7 km away. Distance alone does not show whether an outlet affects this water.
- Which outlets near Penzance are linked to a live feed?
- 5 of the 5 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.