Results & evidence
Does TapSure guarantee a specific tap is safe?
No. Utility evidence may end at the property boundary. Building plumbing, tanks, wells, mixed supplies and temporary local events can change the water at an individual faucet.
What do the four results mean?
- Tap water generally suitable: official city or service-area evidence supports normal use of the treated public supply.
- Check locally first: confirm the building supply or choose a more conservative option.
- Use treated or sealed water: official travel-health or public-health guidance supports bottled, boiled or otherwise properly treated water.
- Insufficient evidence: TapSure does not have enough reliable official evidence for a stronger conclusion.
Why can buildings in the same city differ?
A city can have multiple suppliers. Internal plumbing, lead service lines, rooftop tanks, cisterns and private wells can also affect what reaches a faucet.
How often is the guide reviewed?
TapSure uses a monthly review schedule. Every result shows its review date, evidence scope and confidence. Check current utility or local-health notices before drinking.
What should higher-risk travelers do?
Pregnant people, infants, older adults and immunocompromised travelers should choose the more conservative option when uncertain and seek professional health advice for their situation.
Report a correction
To help us review a destination efficiently, include:
- the city and country;
- the TapSure result you believe needs review;
- a short explanation; and
- a direct official utility, government or public-health source when possible.
Contact support
During the TapSure beta, open TestFlight, select TapSure and use Send Beta Feedback. You can also include a screenshot to help us understand the issue.