ROWP Lapus Wastewater Treatment Plant, Lăpuș, Maramureș, Romania

ROWP Lapus is a municipal wastewater treatment plant located in Lăpuș, Maramureș County, Romania. The facility serves a small population of 488 residents, reflecting its role in a rural community within the Carpathian region. As a secondary treatment plant, it provides biological treatment to reduce organic pollutants before discharge. With a designed capacity of 4,500 m³/day and a current discharge volume of 53.57 m³/day, the plant operates well below its capacity. Under Romanian and EU regulations, small agglomerations like this are subject to the Urban Waste Water Treatment Directive (91/271/EEC), which requires appropriate treatment based on the sensitivity of receiving waters. The plant's secondary treatment level meets the standard for freshwater discharges in non-sensitive areas. The treated effluent is likely discharged into a local tributary of the Someș River, which flows into the Tisza River and eventually the Danube River and Black Sea. The plant's inland location, over 50 km from the coast, reduces direct marine impact. The surrounding watershed supports diverse aquatic life and is part of the larger Carpathian basin ecosystem.

The plant discharges into a local watercourse within the Someș River basin, which drains into the Tisza River, a major tributary of the Danube. The Danube then flows into the Black Sea. The watershed supports diverse aquatic habitats and is ecologically sensitive due to its location in the Carpathian region, which hosts important biodiversity. The plant's secondary treatment helps protect downstream water quality in this inland basin.