CLSC de Salaberry-de-Valleyfield. CLSC CISSS de la Montérégie-Ouest. 71, rue Maden, bureau 200, Salaberry-de-Valleyfield, QC J6S 3V4. Directions. to CLSC de Salaberry-de-Valleyfield (opens in a new window) Service contacts. 450 371-0143, ext. 0. How to get this service Submit a request by mail or fax: 450-371-6340..