Illinois Water Quality Ratings

Rank	Utility	City	Population	Score	Grade
#1	PALATINE	PALATINE	70,875	77	B
#2	IL AMERICAN-WEST SUBURBAN	BOLINGBROOK	73,978	77	B
#3	OAK PARK	OAK PARK	54,583	75	B
#4	WHEATON	WHEATON	53,970	75	B
#5	JOLIET	JOLIET	160,000	75	B
#6	OAK LAWN	OAK LAWN	58,362	72	C
#7	ORLAND PARK	ORLAND PARK	58,020	72	C
#8	SCHAUMBURG	SCHAUMBURG	75,750	72	C
#9	NAPERVILLE	NAPERVILLE	156,406	72	C
#10	ROCKFORD	ROCKFORD	147,051	72	C
#11	IL AMERICAN-CHAMPAIGN	CHAMPAIGN	150,000	70	C
#12	DECATUR	DECATUR	76,122	70	C
#13	BERWYN	BERWYN	57,250	69	C
#14	ARLINGTON HEIGHTS	ARLINGTON HEIGHTS	73,320	69	C
#15	TINLEY PARK	TINLEY PARK	56,703	69	C
#16	CHICAGO	CHICAGO	2,746,388	69	C
#17	BLOOMINGTON	BLOOMINGTON	77,610	67	C
#18	Chicago Water Authority	Chicago	2,693,000	67	C
#19	DES PLAINES	DES PLAINES	60,675	66	C
#20	SPRINGFIELD	SPRINGFIELD	117,444	64	D
#21	EVANSTON	EVANSTON	74,486	63	D
#22	CICERO	CICERO	83,000	59	D
#23	IL AMERICAN-EAST ST LOUIS	EAST ST LOUIS	131,368	59	D
#24	AQUA ILLINOIS-KANKAKEE	KANKAKEE	80,000	58	D
#25	WAUKEGAN	WAUKEGAN	87,149	56	D
#26	SKOKIE	SKOKIE	66,422	55	D
#27	AURORA	AURORA	183,000	55	D
#28	IL AMERICAN-PEORIA	PEORIA	137,575	55	D
#29	ELGIN	ELGIN	114,797	49	F