Overview
LERMA wastewater treatment plant serves Lerma, Castilla y León, Spain, with a population equivalent of 13,000. The plant operates under Spain's implementation of the EU Urban Waste Water Treatment Directive.
The LERMA wastewater treatment plant is located in Lerma, a municipality in the province of Burgos, Castilla y León, Spain. Serving a population of approximately 13,000, the plant is part of the region's municipal wastewater infrastructure, managing domestic sewage from the town and surrounding areas. As a plant in Spain, LERMA is subject to the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations of this size (10,000-15,000 population equivalent). The treated effluent from LERMA is discharged into the local water environment, ultimately draining into the Arlanza River basin, a tributary of the Duero River. The Duero flows westward through Spain and into Portugal, emptying into the Atlantic Ocean at Porto. The receiving waters support diverse aquatic life and are important for regional agriculture and ecology.
Environmental context
The LERMA plant discharges into the Arlanza River basin, part of the larger Duero River watershed. The Duero River flows through the Castilla y León region and into Portugal, supporting a variety of fish species and riparian habitats. The downstream environment includes agricultural areas and natural reserves, making proper wastewater treatment essential for maintaining water quality and ecosystem health.
Frequently asked questions
The LERMA plant is located in Lerma, a municipality in the province of Burgos, Castilla y León, Spain. Its address is Autovía del Norte, Urbanización Huertas Bajas, Lerma, Burgos, 09340.
The LERMA plant serves a population equivalent of approximately 13,000 people, covering the town of Lerma and surrounding areas in the Burgos province.
The treated effluent from LERMA is discharged into the local water environment, which drains into the Arlanza River basin, a tributary of the Duero River. The Duero eventually flows into the Atlantic Ocean.
As a Spanish plant, LERMA operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which sets standards for collection and treatment based on population size. For agglomerations of 13,000 people, secondary treatment is typically required.
Under the EU Urban Waste Water Treatment Directive, plants serving between 10,000 and 15,000 population equivalent in Spain are generally required to provide secondary treatment (biological treatment) to reduce organic matter and suspended solids.
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