GOJAIN Wastewater Treatment Plant, Luko, Euskadi, Spain

GOJAIN is a wastewater treatment plant located in Luko, within the province of Araba/Álava in the Basque Country (Euskadi), Spain. The plant serves a small community of approximately 2,000 residents and has a designed capacity of 1.00, reflecting its role in local sanitation infrastructure. As a small agglomeration in Spain, GOJAIN operates under the EU Urban Waste Water Treatment Directive 91/271/EEC, which requires appropriate treatment for discharges into inland waters. Plants of this scale typically employ secondary treatment to meet regulatory standards for organic matter and suspended solids removal. The plant discharges into the local watershed, which drains into the Bay of Biscay via the Nervión River system. This coastal region supports diverse aquatic life and is important for migratory fish species. Proper treatment helps protect downstream water quality and marine ecosystems.

GOJAIN's treated effluent flows into the local river network, part of the Nervión basin, which ultimately reaches the Bay of Biscay. This coastal area supports diverse marine life and is an important ecological zone. The plant's operation helps maintain water quality in the watershed, benefiting both freshwater and downstream marine habitats.