I'd suggest using m³ (cubic meters) instead of l (liters) for water_tank:volume for two reasons:
- I think we should go for SI-units whenever possible in OpenStreetMap. Additionally for this case, the wikipedia [] states that:
In the International System of Units (SI), the standard unit of volume is the cubic metre (m3).
- Another argument for having m3 instead of liters is the distribution of values on water_tank:volume on TagInfo []
- There are a lot of zeros at the end of values. So the values are hard to read. Stripping them would help everybody.
- Moreover, a water tank that has got less than 1000l = 1m3 would be of no interest in emergency case, but this POI is marked as emergency-POI. In case it counts in emergency case, one could also write "0.35" for 350l.
There are only 749 tag occurences right now - it would be not the biggest problem to change all of them.
Note: This is my first proposal to this Wiki. How to proceed? Whom to inform? When to change? How to take a final decision?