Tjörn · Evidence tier A
Meter-backed water savings from week one
Prove household water behavior with meter data your utility can defend.
Outcome
-12%
lower daily water use in week 1
A week-1 meter-backed saving signal strong enough for utility and municipal leadership conversations, with method notes ready for longer windows and area variation.
Setting
Household drinking-water program on Tjörn with municipal and utility partnership. Activation ran across local areas including Björholmen and Gunnersviken, without forcing a heavy app login.
The challenge
Households needed soft, private prompts to use less drinking water. Portals and annual reports were not arriving at the tap decision. The municipality and utility needed meter-backed evidence operations and communications could both stand behind, not survey vibes alone.
What we activated
Smart Nudges via email with no login required: personalization, soft commitment, and neighbor comparison framed for privacy. Sends were timed so households could act in the week, and engagement was tracked alongside meter signals so the team could see both activation and outcome.
Behavioral toolkit
- Personalization
- Commitment
- Social comparison
- Privacy framing
- Light-touch channels
What changed
- Daily water use dropped 12% in week 1 of the January 2026 sendout.
- Fast proof that activation reached the tap, not only the inbox.
- Program engagement across many local areas in the delivery story.
Good to know
Week-1 meter signal. Longer windows, seasonality, and area variation are documented as caveats on the full method note so the number is not treated as a permanent island average.
Want meter-friendly household activation for water or a related utility program?