PIA nouvelle Wastewater Treatment Plant, Pia, Occitanie

PIA nouvelle is a wastewater treatment plant located in Pia, a commune in the Pyrénées-Orientales department of Occitanie, southern France. The plant serves a population of approximately 22,520 residents, placing it in the medium-agglomeration category under French and EU regulations. It is situated near the Mediterranean coast, within 50 km of the shoreline. As a French wastewater facility, PIA nouvelle operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations of this size discharging into coastal waters. French plants are typically managed by municipal authorities or regional water agencies, with permits issued by the local prefecture. The plant's treated effluent likely discharges into a watercourse that flows toward the Mediterranean Sea, contributing to the regional water quality management in the Gulf of Lion. The surrounding area includes agricultural and urban zones, and the plant plays a key role in protecting downstream coastal ecosystems from nutrient pollution.

PIA nouvelle discharges into a local watercourse that drains into the Mediterranean Sea via the Gulf of Lion. The coastal waters in this region support diverse marine life, including seagrass meadows and fish nurseries, which are sensitive to nutrient inputs. The plant's location within 50 km of the coast means its effluent can influence nearshore water quality, particularly during low-flow periods.