# Sines municipal administration and infrastructure > Live situation record from CLSTR: https://clstr.news/situations/sines-municipal-administration-and-infrastructure > Updated: 2026-10-14T20:55:04.000Z. Sources: 8. Developments: 2. The municipality of Sines has undergone various administrative and infrastructural developments. Following the establishment of the Portuguese Republic, Sines regained its municipal autonomy in 1914 after being annexed to Santiago do Cacém for 59 years. This period saw the repurposing of the Igreja de Santa Isabel into a postal headquarters starting in 1927. In recent efforts to manage rapid industrial and population growth, Mayor Álvaro Beijinha met with the Minister of Environment and Energy, Maria da Graça Carvalho, to request public resources for critical infrastructure. The municipality is seeking to upgrade its water supply and sanitation systems to alleviate pressure on existing networks. A central proposal involves the construction of a new Wastewater Treatment Plant (ETAR) for Sines, estimated to cost approximately 10 million euros. This facility is intended to reduce reliance on 17 existing pumping stations that currently consume significant resources. Furthermore, the municipality highlighted the necessity of addressing an aging water distribution network and managing environmental liabilities related to the Sanchinha landfill, which is located near water catchment areas on the border between Sines and Santiago do Cacém. ## Timeline ### 2026-10-14: Sines Municipality requests government aid for water and sanitation The Mayor of Sines has requested government funding for a new 10-million-euro wastewater treatment plant and upgrades to the city's aging water supply network. 3 sources. https://clstr.news/cluster/sines-municipality-requests-government-aid-for-sanitation-and-environmental-issues ### 2026-10-04: Sines regained municipal autonomy and new postal headquarters following the Republic The transition to the Portuguese Republic led to Sines regaining municipal autonomy in 1914 and the conversion of the Igreja de Santa Isabel into the town's first postal headquarters in 1927. 6 sources. https://clstr.news/cluster/sines-regained-municipal-autonomy-and-new-postal-headquarters-following-the-republic --- Cite as: Sines municipal administration and infrastructure. CLSTR, https://clstr.news/situations/sines-municipal-administration-and-infrastructure