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West Mersea

Colchester, Anglian
Good Water Quality
Data last verified: 27 Sep 2026

West Mersea's picturesque coastline boasts a tranquil atmosphere, with its mud and shingle shoreline gently lapping against the waters of the North Sea. The beach has been awarded a 'Good' water quality rating by the Environment Agency, making it an ideal destination for families and beach lovers. During the summer months, the water temperature at West Mersea typically ranges from 18-20°C, perfect for a refreshing dip.

18.9°C
Air Temp
18.4 mph
Wind Speed
Low Tide
in 1h 5m
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Live Water Quality

80
Good
Safe for swimming
• Updated 10 mins ago
Today's Conditions • Updated 10 mins ago

Lifeguards

Unknown
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Air Temp

18.9°C
Comfortable

Weather

Rain showers
18.9°C

Tide

Low Tide
in 1h 5m

Water Quality

Good
Safe for swimming

Pollution Alerts

None
No alerts today

Quick Overview

Mud & Shingle beach
Family friendly
Dog friendly
(winter)
Parking nearby
Toilets
Café

Beach Information View all details

Beach Type
Mud, Shingle
Water Quality
Good
Avg. Air Temp
18.9°C
Swimming
Highly recommended

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Reference Information

Full Tide Times
High 13:22 2.5m
Low 19:45 -2.4m
High 01:51 2.4m
Low 08:00 -2.0m
Sediment Type
Mud, Shingle

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

Annual Rating
Good

Water quality is clean and fully compliant with safety directives. It regularly meets bacterial limits under standard environmental conditions.

Rainfall Impact
Low Risk

This bathing water is generally resilient and has a low risk of quality degradation after heavy summer storm events.

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
Anglian Water Services Limited

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

Designated Year
1991

Officially designated as a protected bathing water site in 1991. This designation mandates regular public health monitoring.

County / District
Colchester

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

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