Commitments and Contingent Liabilities (Tables)

12 Months Ended

Dec. 31, 2012

Commitments And Contingent Liabilities Tables

Schedule of Water cost purchased

Purchased water costs are shown below:

	Years Ended December 31,
	(Millions of Dollars)
Purchased Water	2012		2011		2010
Untreated	$	2.4	$	2.4	$	2.5
Treated		3.1		2.7		2.9
Total Costs	$	5.5	$	5.1	$	5.4