ROWP Darmanesti Wastewater Treatment Plant, Dărmănești, Bacău, Romania

ROWP Darmanesti is a municipal wastewater treatment plant located on Strada Minerilor in Dărmănești, Bacău County, Romania. The facility serves a population of approximately 9,250 people, classifying it as a small to medium agglomeration under Romanian and EU regulations. The plant is situated inland, away from coastal areas, and its operations are part of the regional water management infrastructure in the Trotuș River basin. The plant provides secondary treatment, which is the minimum standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for freshwater discharges from agglomerations of this size. With a designed capacity of 15,000 m³/day and a current discharge volume of 10.52 m³/day, the facility operates well within its capacity. As a Romanian plant, it falls under the national implementation of the EU directive, overseen by the Romanian National Administration "Apele Române" and local environmental protection agencies. The treated effluent is discharged into the local water system, ultimately flowing into the Trotuș River, a tributary of the Siret River, which drains into the Danube River and then the Black Sea. The plant plays a key role in protecting the Trotuș River and downstream ecosystems from untreated wastewater pollution, supporting aquatic life and water quality in the region.

The plant discharges treated wastewater into the Trotuș River basin, which flows into the Siret River, a major tributary of the Danube. The Danube ultimately reaches the Black Sea, making this plant part of a large transboundary watershed. The Trotuș River supports diverse aquatic life and is used for irrigation and recreation downstream. Protecting this water body from nutrient and pathogen pollution is critical for maintaining ecological balance and human health in the region.