[en] The installations that are most often colonized by Legionella spp. (bacteria that cause Legionnaires' disease) and have been identified as potential sources of community infection are cooling towers and evaporative condensers. Madrid Salud, as the competent public health authority in Madrid, ensures compliance with all applicable regulations by, and the proper operation of, those municipal installations at risk of proliferation and dispersion of Legionella spp. of the City Council of Madrid as the licensee which is responsible for the corresponding municipal buildings. In order to improve the control and monitoring procedures, maps with areas of influence with distances of 500 m and 1,000 m have been drawn, which include sites with sensitive populations, such as homes for the elderly and health centers, and potentially highly frequented places, such as markets and subway stations. A specific methodology for the preventive determination of locations that are deemed to have the highest exposure and sensitivity for being close to municipal installations with a high risk of legionellosis transmission in the city of Madrid is provided here. A map has been drawn for each of the 14 buildings, for a total of 45 municipal installations at risk, and 760 points of interest in all have been identified in their areas of influence. Geotechnologies for the environmental monitoring system designed for legionellosis risk installations are useful as monitoring tools for minimizing the potential risk for and impact on health, guiding environmental research and permitting fast intervention on such installations.

[pt] As instalações mais frequentemente colonizadas por Legionella spp. (bactérias causadoras da doença do legionário) e que foram identificadas como potenciais fontes de infeção comunitária, são as torres de refrigeração e os condensadores evaporativos. A Madrid Salud, como órgão competente em matéria de saúde pública, assegura o cumprimento das normas aplicáveis e o bom funcionamento das instalações municipais em risco de proliferação e propagação de Legionella spp. da Câmara Municipal de Madrid, como proprietário responsável pelos edifícios municipais. Para melhorar os procedimentos de controle e vigilância, foram feitos mapas com áreas de influência com distâncias de 500 e 1000 metros, que incluem pontos com populações sensíveis, como lares ou centros de saúde, ou locais potenciais de serem muito frequentados, como mercados ou estações de metropolitano. Fornece-se uma metodologia específica, para a determinação preventiva dos locais considerados mais expostos e sensíveis perante instalações municipais com alto risco de transmissão da legionelose, na cidade de Madrid. Foi elaborado um mapa para cada um dos 14 edifícios, o que resulta num total de 45 equipamentos municipais de risco; identificou-se as suas áreas de influência, com um total de 760 pontos de interesse. A aplicação de geotecnologias ao sistema de vigilância ambiental de instalações em risco de legionelose é útil como ferramenta de controle para minimizar o potencial risco e impacto na saúde, orientar a investigação ambiental e proporcionar uma intervenção rápida nas referidas instalações.