GRIMSBY STW - Grimsby Wastewater Treatment Plant, England

GRIMSBY STW is a municipal wastewater treatment plant serving the port city of Grimsby in North East Lincolnshire, England. With a population served of around 132,000, it is classified as a large agglomeration under the UK's implementation of the EU Urban Waste Water Treatment Directive (UWWTD). The plant is situated near the Humber Estuary, a major tidal estuary on the east coast of England. As a large agglomeration, the plant is expected to provide at least secondary treatment under the UWWTD, with potential for tertiary treatment if discharging into a sensitive area. The UK Environment Agency regulates such plants through discharge permits under the Environmental Permitting Regulations. The plant's designed capacity is noted as 1.00, though the unit is unspecified; typical capacities for this population size range from 30,000 to 50,000 cubic meters per day. The treated effluent from GRIMSBY STW discharges into the Humber Estuary, which flows into the North Sea. The estuary supports diverse aquatic life, including important fish populations and migratory birds. The plant plays a key role in protecting the water quality of the Humber Estuary and the downstream marine environment.

GRIMSBY STW discharges into the Humber Estuary, a major tidal estuary that drains into the North Sea. The estuary is ecologically sensitive, supporting diverse aquatic life, including commercially important fish species and migratory birds. The plant's location within 50 km of the coast means its discharge can affect both estuarine and coastal water quality, making effective treatment essential for protecting the downstream marine environment.