La ville de Guyancourt (dans les Yvelines (78)) se trouve dans la zone de collecte du SIAAP, c’est-à-dire que les 28633(1) habitants correctement branchés à leur réseau d’assainissement envoient leurs eaux usées à l’usine de traitement de Seine aval

Zone SiaapGuyancourt

À Guyancourt, la collecte et le transport des eaux usées sont assurés par deux gestionnaires différents. Il se peut, selon votre adresse, que vous soyez branchés à l’un ou à l’autre :

  • La collecte des eaux usées est assurée par la CA Saint-Quentin-en-les Yvelines (78) par des réseaux séparatifs
  • Le transport des eaux usées est assuré par HYDREAULYS, jusqu’aux réseaux du SIAAP.

La correction des branchements au réseau d’assainissement est essentielle pour protéger la nature et être conforme à la réglementation. Contacter votre gestionnaire vous permettra d’obtenir une aide financière pour les travaux de mise en conformité de votre assainissement collectif.

(1)données INSEE 2017

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