Check drinking water quality
Zurich's tap water is continuously monitored by Wasserversorgung Zürich and additionally checked by the independent cantonal laboratories. Anyone wanting to verify the quality can find the measurements publicly – the raw data is available in the city's open data catalogue.
Process compass
Structural diagnosis of this procedure — derived from the model, not legally binding information.
Responsibility
- Zurich water utility (WVZ)
Burden on citizens
No particular hurdles recorded.
Assessment: digitalisation & user-centricity
Indicators met: 75% (3 of 4)
Derived metadata — not an authoritative statement. Each indicator is either deterministically computed from the process model or evidenced from the official source. Without evidence or derivation an indicator stays "unknown" — it is never guessed.
8 indicators unknown — not assessed for lack of evidence (not counted as "not met").
Digitalisation · No known indicators yet
Online application availableunknownEvidence
No evidence on file — flagged as unknown, not as not met.
Strategic basis: Strategien Zürich 2040, S. 31directly anchored«Städtische Angebote und Leistungen stehen der Bevölkerung und den Unternehmen online zur Verfügung.»
Online payment availableunknownEvidence
No evidence on file — flagged as unknown, not as not met.
Common concerns that lead here
Digital maturity & simplification
Online maturity:DigitalStatus: ObservedData already on file (once-only)
The quality data is already open and machine-readable – an address-specific query could make it even more directly accessible for residents.
Pain points
- The data exists but cannot be queried for a specific address.
Improvement ideas
- A simple lookup of water quality by address or neighbourhood.
Impact & metrics
- Data access: öffentlich im Open-Data-Katalog
User groups
Residents who want to know how good their tap water is
Steps (textual)
- Question about drinking water qualityStartResident
- Cantonal laboratories additionally test independentlyProcessCantonal laboratories
- View measurements and raw dataInputResident
The current quality values are public; the raw data is available in the city's open data catalogue.
Übersetzung ausstehend — Verbindliche Werte (Fristen & Gebühren)
Übersetzung ausstehend — Verbindliche Zahlen stehen bewusst nicht im Diagramm — sie gelten nur so, wie sie in der amtlichen Quelle stehen. Jeder Eintrag verlinkt auf die exakte Stelle.
- Continuous quality monitoring(retrieved 2026-06-21)
«Pro Jahr werden im Labor der Wasserversorgung Zürich über 10 000 Wasserproben von den Wasserwerken bis ins Verteilnetz untersucht.»
- Independent cantonal testing(retrieved 2026-06-21)
«Zusätzlich beproben die unabhängigen Kantonalen Laboratorien das Trinkwasser und kontrollieren die Arbeit der Wasserversorger.»
- Raw data as open data(retrieved 2026-06-21)
«Die Rohdaten sind in maschinenlesbarer Form im Open Data Katalog der Stadt Zürich veröffentlicht»
Legal basis
- Lebensmittelgesetz (LMG, SR 817.0)
- Stadt Zürich – Trinkwasser: Qualität und Kontrolle
- Open Data Zürich – Trinkwasserqualität (Rohdaten)
Sources
- Stadt Zürich – Trinkwasser: Qualität und Kontrolle(retrieved 2026-06-21)
- Open Data Zürich – Trinkwasserqualität(retrieved 2026-06-21)