Signals that a Polish municipality is about to build infrastructure — sewerage, water supply, roads, street lighting, gas network or cycling infrastructure. Three independent public sources: tenders published in the national public procurement bulletin (rolling 12-month window), membership in an agglomeration of the national urban waste-water treatment programme (where collective sewerage exists or is planned), and the municipality's own planned capital expenditure from its multi-year financial forecast. Address by location (city/county name → aggregates every municipality in that county; gmina name → that municipality alone) OR teryt (6-7 digits = one municipality, 4 digits = a county aggregate). teryt wins when both are given. Use list_locations to find codes. Known limits, state them when you report results: the bulletin carries only contracts BELOW the EU procurement thresholds (from 2021), so the largest investments are not visible here. A tender is attributed to the SEAT of the contracting authority, not to the works location — county and national authorities tender works in other municipalities. The category counters therefore include municipal authorities only, while the recent-notice list shows every authority with a flag. Absence of tenders is NOT evidence that a municipality is not investing. Cost: 1 token.