Limbažu Lielezera Peldvieta

Latvia Lake 1 - Excellent

Limbažu Lielezera is an official bathing water in Latvia subject to monitoring and quality assessment under EU Directive 2006/7/EK. The bathing water profile document analyzes factors affecting water quality with the aim of achieving at least adequate water quality classification on a four-tier scale: excellent, good, adequate, or poor. Water quality is assessed based on microbiological criteria, specifically E. coli and intestinal enterococci levels, and consideration of cyanobacteria blooms.

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Water

Limbažu Lielezera is an inland lake (ūdenstilpe) in Latvia. Physical, geographical, hydrological, and ecological characteristics are documented, though specific measurements such as area, depth, or flow rate are not provided in the extracted text.

Water Quality

Water quality is classified using statistical analysis of data from the four most recent bathing seasons. Excellent quality: intestinal enterococci ≤200 CFU/100 ml (95th percentile), E. coli ≤500 CFU/100 ml (95th percentile). Good quality: intestinal enterococci ≤400 CFU/100 ml (95th percentile), E. coli ≤1000 CFU/100 ml (95th percentile). Adequate quality: intestinal enterococci ≤330 CFU/100 ml (90th percentile), E. coli ≤900 CFU/100 ml (90th percentile). Bathing is not recommended if E. coli exceeds 1000 but does not exceed 3000 cells/100 ml or if intestinal enterococci exceed 300 but do not exceed 500 cells/100 ml. Bathing is prohibited if E. coli exceeds 3000 cells/100 ml or intestinal enterococci exceed 500 cells/100 ml.

Risks

Excessive cyanobacteria bloom renders bathing impermissible. Pollution sources are characterized in the document, including point and diffuse pollution from fecal sources, urban areas, traffic, atmospheric pollution, and agricultural land use.