How hard is Basel tap water?

I recently purchased a Siemans dishwasher which requires me to enter a number that indicates the hardness of the water.

They mention values such as Clarke and mmol/l.

Any ideas where I can obtain such values?

Have a look at the bottom of this page . ("Wasserhärte")

Hope this helps.

0.67 mmol/l

...so hard it comes out the tap wearing a track suit...

(thanks to Jack Dee)

For more information regarding it, please check

http://www.dotmmo.com/tap-legend-8402.html

Assuming you come from the postcode 4000 it has a french hardness grade of 18-25, which you pretty much divide by 10 to get mmol/l... so 1.8-2.5 mmol/l

there are several hardness measurement grades, English (Clark, °e), French (°f), German (°d), mmol/l etc... so between 12.5-17.5 °e

Thanks very much. Dishwasher now all configured.

Cheers