Overview
Cesu NAI is a municipal wastewater treatment plant serving Cēsis, Latvia. It treats wastewater from approximately 17,814 residents, operating under EU Urban Waste Water Treatment Directive standards.
Cesu NAI is a municipal wastewater treatment plant located in Cēsis, Latvia, serving a population of approximately 17,814. The plant is situated in the Gauja River basin, an ecologically significant region known for its diverse aquatic habitats. As part of Latvia's wastewater infrastructure, it plays a key role in protecting local water quality. The plant operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations of this size. Latvia has implemented the directive through national regulations, ensuring that wastewater is treated to meet environmental standards before discharge. The plant's capacity and treatment processes are designed to comply with these requirements, though specific details are not publicly available. The treated effluent is discharged into the Gauja River, which flows into the Baltic Sea via the Daugava River. The Gauja River valley is a protected landscape supporting diverse flora and fauna, including salmonid fish species. Proper treatment at Cesu NAI helps maintain the ecological health of this important waterway and the downstream Baltic Sea ecosystem.
Environmental context
Cesu NAI discharges treated wastewater into the Gauja River, a major river in northern Latvia that flows into the Daugava River and ultimately the Baltic Sea. The Gauja River valley is an ecologically sensitive area with diverse aquatic life, including salmon and trout populations. The plant's operations help protect this downstream environment from nutrient pollution and other contaminants.
Frequently asked questions
Cesu NAI is located in Cēsis, Latvia, at Spoguļklintis, Mūrlejas iela, Murleja, Cēsis, Cēsu novads, LV-4101.
Cesu NAI serves approximately 17,814 residents in the Cēsis area.
Cesu NAI discharges treated wastewater into the Gauja River, which flows into the Daugava River and eventually the Baltic Sea.
Cesu NAI operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates secondary treatment for agglomerations with a population equivalent over 2,000. Latvia has transposed this directive into national law, ensuring the plant meets required treatment standards.
For agglomerations of this size, the EU UWWTD requires at least secondary treatment (biological treatment with secondary settling). In sensitive areas, additional nutrient removal may be required. Latvia's regulations align with these standards to protect the Baltic Sea from eutrophication.
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