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Sewerage	Mon–Fri 7:00–15:00	4796-3634
Sewerage	Mon–Fri 15:00–7:00 and weekends	691 479 634
District heating in Gasperich	24/7	4796-2329
District heating in Ville-Haute	24/7	4796-2333
District heating in Belair, Rollingergrund	24/7	4796-2353
District heating in Limpertsberg	24/7	4796-2354
District heating in Kirchberg, Neudorf-Weimershof	24/7	4796-2355
District heating in the Bonnevoie, Verlorenkost and Gare districts	24/7	4796-2382/2453
District heating in Dommeldange	24/7	4796-2475
Eaux	24/7	4796-3003
Public lighting	Mon–Fri 8:00–12:00 and 14:00–17:00	4796-3880
Public lighting	24h/24 – In case of emergency outside of office hours, as well as on weekends and public holidays.	4796-3005
Traffic signs and signals	Office hours	4796-2310
Traffic signs and signals	24/7	691 98 10 10

Electricity	24/7	8002-9900
Gas	24/7	8007-3001

Playgrounds	Mon–Fri 7:00–16:00	661 830 830
Bus	Mon–Fri 7:00–22:00 \| Sat 8:00–16:00	4796-2975
Environmental hotline (Emwelttelefon)	Office hours	4796-3640
Construction mediators	Mon–Fri 8:00–17:00	4796-4343