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Portland Harbour Sandsfoot Castle

Dorset, South West
Excellent Water Quality
Data last verified: 08 Aug 2026

Bathers visiting Portland Harbour Sandsfoot Castle in Dorset, South West will find a sandy coastal environment. Tested regularly during the bathing season, the location holds a current annual water quality classification of Excellent. The site was designated as an official bathing water site in 1988, supporting local outdoor recreation.

17.9°C
Air Temp
10.1 mph
Wind Speed
High Tide
in 1h 58m
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Live Water Quality

95
Excellent
Safe for swimming
Updated 10 mins ago
Today's Conditions Updated 10 mins ago

Lifeguards

Unknown
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Air Temp

17.9°C
Comfortable

Weather

Partly cloudy
17.9°C

Tide

High Tide
in 1h 58m

Water Quality

Excellent
Safe for swimming

Pollution Alerts

None
No alerts today

Quick Overview

Sandy beach
Family friendly
Dog friendly
(winter)
Parking nearby
Toilets
Café

Beach Information View all details

Beach Type
Sand
Water Quality
Excellent
Avg. Air Temp
17.9°C
Swimming
Highly recommended

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Reference Information

Full Tide Times
High 02:06 0.4m
Low 07:33 -0.4m
High 10:15 -0.1m
Low 11:03 -0.2m
Sediment Type
Sand

The shoreline consists primarily of sand. Sediment type dictates underfoot comfort, wave energy absorption, and the water's clarity when currents stir up the seabed.

Annual Rating
Excellent

Water quality is classified as excellent, meeting the highest cleanliness standards. Bacterial counts (E. coli & Intestinal Enterococci) are consistently low, posing negligible health risks.

Rainfall Impact
High Risk

Bacterial levels are highly susceptible to storm runoff. Heavy rainfall in the local catchment is likely to trigger storm overflows and agricultural runoff, rendering the water temporarily unsafe.

Monitoring Authority
Environment Agency

Tested weekly by the Environment Agency England for bacteria levels (E. coli & Intestinal Enterococci) between May and September.

Water Body Type
Coastal Beach

Monitored as a coastal beach. Coastal beaches are subject to tidal flows and marine dilution, whereas inland lakes/rivers suffer from low water circulation, meaning bacteria can linger longer.

Sewerage Provider
Wessex Water Services Limited

Wessex Water Services Limited is the regional utility responsible for waste water treatment, sewage infrastructure, and storm overflow management in this catchment area.

Designated Year
1988

Officially designated as a protected bathing water site in 1988. This designation mandates regular public health monitoring.

County / District
Dorset

Governed under local district sanitation and environmental safety regulations in the Dorset area.

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