SWITZERLAND · LANDSCAPE · WATER PROTECTION
Grundwasserschutzzonen S1
What this layer shows
The wellhead zones (zone S1) of the groundwater protection zones under Art. 20 GSchG, which the cantons designate around wells and springs of public interest. In zone S1 only works and activities serving the drinking water supply are allowed (Annex 4 GSchV). The layer shows zones in force only. Included: the cantons of AG, AI, AR, BE, BL, BS, FR, GE, GL, GR, JU, LU, SH, SO, SZ, TG, TI, UR, VS, ZG and ZH; cantons whose terms of use do not allow use in this app, or that do not publish the data openly, are not included. For the canton of Graubünden's data: “No warranty is given as to the correctness, accuracy, currency or completeness of the published information.”
Publisher and licence
Kantone AG/AI/AR/BE/BL/BS/FR/GE/GL/GR/JU/LU/SH/SO/SZ/TG/TI/UR/VS/ZG/ZH über geodienste.ch (Quelle: Planerischer Gewässerschutz, Kanton Graubünden, 2026), Nutzungsbedingungen der Kantone
Licence not stated by the publisher
Kantone AG/AI/AR/BE/BL/BS/FR/GE/GL/GR/JU/LU/SH/SO/SZ/TG/TI/UR/VS/ZG/ZH über geodienste.ch (Quelle: Planerischer Gewässerschutz, Kanton Graubünden, 2026), Nutzungsbedingungen der Kantone
Where the data comes from
WFS · geodienste.ch
Merestone asks this service live for the area on screen. Nothing is copied or stored beyond a short cache.
Facts shown for each feature
Cantonal name · In force since · Cantonal status · Under earlier law · Canton
In these presets
Environmental assessment
Where an environmental consultancy starts a site assessment: the federal biotope inventories, forest reserves and wildlife rest zones, the state of the rivers, wildlife corridors and amphibian crossing sites, the sites of threatened mosses, and the groundwater protection zones, hazard map and polluted-site registers of the cantons that publish them openly.
Water and natural hazards
Groundwater protection zones S1 to S3, Sh and Sm, protection areas, water protection areas Au and Ao and inflow areas, river space, then the hazard and hazard indication maps, the natural event register and seismic subsoil classes: with bathing waters and the ecomorphological state of the rivers.