Octavia Moise, George Banghiore, Mari-Isabella Stan
DOI: 10.2478/ouacsce-2024-0014
Pages: 119-126
Abstract – This study analyses the relationships between investments, network
expansion, operational costs, tariffs and environmental compliance in sewage services in
Romania, over the period 2012–2022. Using a quantitative methodology based on
correlation matrix and principal component analysis (PCA), the research highlights the
interdependencies between key indicators. The results show that connected population
and tariffs are determinants of economic sustainability, while investments indirectly
contribute to improving environmental compliance. The study highlights the need for an
integrated strategy that combines financial efficiency, infrastructure modernization and
environmental compliance to ensure long-term sustainability.
Keywords – economic impact, investments, performance, wastewater.
