Purify Water

Special 
Remove all impurities from water by pouring it through any hoop or ring (or, in a pinch, his own fingers) into a container. Only one skill roll is required, as long as the flow continues.

Duration: Purified water stays pure unless recontaminated. 
Cost: 1 per gallon purified. 
Time to cast: Usually 5 to 10 seconds per gallon, unless a large container and ring are used. 
Prerequisite: Seek Water.

Item 
A hoop of bone or ivory.  
Energy cost to create: 50.