Illinois Water Quality Ratings

Rank	Utility	City	Population	Score	Grade
#1	JOLIET	JOLIET	160,000	79	B
#2	ROCKFORD	ROCKFORD	147,051	68	C
#3	BERWYN	BERWYN	57,250	67	C
#4	CICERO	CICERO	83,000	67	C
#5	DES PLAINES	DES PLAINES	60,675	67	C
#6	OAK LAWN	OAK LAWN	58,362	67	C
#7	OAK PARK	OAK PARK	54,583	67	C
#8	PALATINE	PALATINE	70,875	67	C
#9	ARLINGTON HEIGHTS	ARLINGTON HEIGHTS	73,320	67	C
#10	SCHAUMBURG	SCHAUMBURG	75,750	67	C
#11	TINLEY PARK	TINLEY PARK	56,703	67	C
#12	CHICAGO	CHICAGO	2,746,388	67	C
#13	WHEATON	WHEATON	53,970	67	C
#14	NAPERVILLE	NAPERVILLE	156,406	67	C
#15	BLOOMINGTON	BLOOMINGTON	77,610	67	C
#16	IL AMERICAN-WEST SUBURBAN	BOLINGBROOK	73,978	67	C
#17	IL AMERICAN-CHAMPAIGN	CHAMPAIGN	150,000	66	C
#18	ORLAND PARK	ORLAND PARK	58,020	65	C
#19	AQUA ILLINOIS-KANKAKEE	KANKAKEE	80,000	65	C
#20	DECATUR	DECATUR	76,122	65	C
#21	SPRINGFIELD	SPRINGFIELD	117,444	65	C
#22	Chicago Water Authority	Chicago	2,693,000	56	D
#23	EVANSTON	EVANSTON	74,486	55	D
#24	SKOKIE	SKOKIE	66,422	55	D
#25	ELGIN	ELGIN	114,797	55	D
#26	WAUKEGAN	WAUKEGAN	87,149	55	D
#27	IL AMERICAN-PEORIA	PEORIA	137,575	55	D
#28	IL AMERICAN-EAST ST LOUIS	EAST ST LOUIS	131,368	55	D
#29	AURORA	AURORA	183,000	53	F