ROWP Moisei Wastewater Treatment Plant - Moisei, Maramureș, Romania

ROWP Moisei is a wastewater treatment plant located in the town of Moisei, Maramureș County, Romania. The facility provides secondary treatment for a population of approximately 300 residents, with a designed capacity of 4,500 cubic meters per day. It is situated along DN18 in the Carpathian Mountain region. As a secondary treatment plant, ROWP Moisei meets the standard requirements under the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. The directive mandates secondary treatment for all discharges from agglomerations with a population equivalent above 2,000, and Romania has transposed these requirements into national law. The plant's capacity utilization suggests it operates well below its design capacity, which is common for small rural facilities. The plant discharges treated wastewater into local watercourses that drain into the Vișeu River, a tributary of the Tisza River. The Tisza flows into the Danube, which ultimately reaches the Black Sea. The surrounding region is ecologically sensitive, supporting diverse aquatic life and serving as an important corridor for migratory species in the Carpathian basin.

The treated effluent from ROWP Moisei enters local streams that feed the Vișeu River, a tributary of the Tisza River. The Tisza flows into the Danube River, which discharges into the Black Sea. This watershed supports diverse aquatic ecosystems, including fish species such as the Danube salmon and various cyprinids. The Carpathian region is known for its biodiversity, and the plant's secondary treatment helps protect downstream water quality in this sensitive mountain environment.