Figure 8	
"Trends in the Occurrence of MTBE in Drinking Water Derived from Ground Water in 6 Northeast States, 1993-2006"	

Title:	Number of public water systems with data on methyl tert-butyl ether in drinking water dervied from ground water in by type of public water system and by State.
	
	
Description:	This is a graph of number of public water systems with data on MTBE in drinking water by type of system and by State. 
	
	
	
Origin of data:	The data were obtained from the full data set on MTBE in drinking water:  frozen_data_set_for_both_original_and_new_reports.rdb
	
	
	
Manipulation of data set:	The number of public water systems by type with data on MTBE in drinking water were summed for each State.
	
	
	
Other:	
	
