| Business | Phone |
| Centre Nautique Chateauguay 540 D'Youville, Chateauguay | (450) 698-3122 |
| Centre Sportif Polydium 111 Boul Maple, Chateauguay J6J 3P9 | (450) 698-3120 |
| Chateauguay Genie & Dev Urbain 20 Boul Maple, Chateauguay J6J 3P8 | (450) 698-3174 |
| Chateauguay Arena 255 Boul Brisebois, Chateauguay J6K 3X4 | (450) 698-3140 |
| Chateauguay Information Gnrle 5 Boul D'Youville, Chateauguay J6J 2P8 | (450) 698-3000 |
| Chateauguay Securite Publique 55 Boul Maple, Chateauguay J6J 3P9 | (450) 698-1331 |
| Chateauguay Permis 5 Boul D'Youville, Chateauguay J6J 2P8 | (450) 698-3260 |
| Chateauguay Transport 5 Boul D'Youville, Chateauguay J6J 2P8 | (450) 698-3030 |
| Chateauguay Bibliotheque 15 Boul Maple, Chateauguay J6J 3P7 | (450) 698-3080 |
| Chateauguay Travaux Publics 20 Boul Maple, Chateauguay J6J 3P8 | (450) 698-3150 |
| Chateauguay Cour Municipale 55 Boul Maple, Chateauguay J6J 3P9 | (450) 698-3246 |
| Chateauguay Arena 75 Boul Maple, Chateauguay J6J 3P9 | (450) 698-3110 |
| Chateauguay Evaluation 5 Boul D'Youville, Chateauguay J6J 2P8 | (450) 698-3250 |
| Chateauguay Loisirs 15 Boul Maple, Chateauguay J6J 3P7 | (450) 698-3100 |
| Chateauguay Heritage 1 Car Richard, Chateauguay J6K 1J6 | (450) 698-3133 |
| Chateauguay Finances 5 Boul D'Youville, Chateauguay J6J 2P8 | (450) 698-3020 |