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Table 3

Pouring It On: Table 3

February 1, 1996

Drinking water supplies for many U.S. cities are contaminated with nitrate above the federal health standard

 

Rank System City State Population Served Date of most recent sample
over federal nitrate standard
Percent of samples over
federal nitrate standard.
Number of Samples Taken Maximum Test Result
 
1 Phoenix Munic. Water System Phoenix AZ 1,000,000 10/26/94 7.3% 82 17.4
2 El Paso Water Utilities El Paso TX 620,000 5/26/93 2.0% 49 13.47
3 Mesa, Munic. Water Dept. Mesa AZ 302,000 8/10/94 2.4% 41 11
4 Scottsdale Scottsdale AZ 174,170 10/20/94 1.0% 105 10
5 Glendale Munic. Water CC Glendale AZ 150,000 3/1/95 10.5% 57 16
6 Chandler, Munic. Wtr Dept. Chandler AZ 120,000 10/12/94 5.0% 60 13.9
7 Janesville Water Utility Janesville WI 52,133 12/5/94 100.0% 1 11
8 Peoria, City Of Peoria AZ 50,618 10/6/94 13.3% 15 12.6
9 State College Boro. Water Auth. State College PA 47,000 2/18/93 3.2% 31 10.4
10 Newark, City Of Newark OH 46,000 11/10/94 2.8% 36 41
11 Gilbert, Town Of Gilbert AZ 45,000 6/24/94 7.1% 14 19.4
12 Utility Parkway Cedar Falls IA 34,298 4/10/95 1.4% 71 10.6
13 Richland, City Of Richland WA 32,600 6/27/95 19.3% 942 19
14 Friendswood, City Of Friendswood TX 27,108 6/12/95 5.0% 20 30.07
15 AZ Water Co., Casa Grande Casa Grande AZ 26,121 1/11/94 8.3% 24 12.1
16 Pasco Water Department Pasco WA 25,465 8/30/94 33.3% 36 17.4
17 Citizens Util., Mohave Bullhead City AZ 25,000 6/13/95 31.3% 16 15
18 SACWSD - Shallow Well #18 Commerce City CO 22,400 6/7/95 8.5% 59 12.3
19 Avondale, City Public Works Avondale AZ 22,000 6/16/93 22.2% 9 14
20 Kearney, City Of Kearney NE 21,751 7/14/93 25.0% 8 16.4
21 Dodge City, City Of Dodge City KS 21,294 2/8/95 17.8% 45 16.2
22 Bonney Lake Water Department Bonney Lake WA 18,586 5/10/94 14.3% 14 27
23 Great Bend PWS/Central KS Utils Great Bend KS 15,427 3/1/95 7.1% 28 10.41
24 Spanaway Water Company Spanaway WA 14,613 9/22/94 7.7% 26 27
25 Brighton, City Of Brighton CO 14,500 5/25/93 15.4% 26 18.5
26 Ephrata Joint Authority Ephrata PA 14,300 7/14/93 2.9% 35 11
27 Shippensburg Boro. Water Shippensburg PA 13,500 5/20/94 5.3% 19 10.2
28 Horsham Water Authority Horsham PA 13,304 1/26/93 2.3% 44 101.7
29 Beatrice, City Of Beatrice NE 12,891 7/14/94 36.4% 22 252.9
30 Sterling, City Of Sterling CO 12,500 7/11/94 23.5% 34 13.1