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Table 15: Columbus, OH was the largest city affected by a violation of the nitrate standard between 1986 and 1995

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Pouring It On: Table 15: Columbus, OH was the largest city affected by a violation of the nitrate standard between 1986 and 1995

February 1, 1996
          Time Spent in Violation of the Nitrate Standard
Rank System City State Population Served Years Most Recent Yr  
1 Columbus-Dublin Road Wtp Columbus OH 269,400 5 1989*  
2 Scottsdale, Municipal Water Scottsdale AZ 174,170 1 1988  
3 Chandler Municipal Water Dept. Chandler AZ 104,000 1 1993  
4 Decatur Decatur IL 83,885 8 1992  
5 Upland, City Of Upland CA 64,973 1 1987  
6 Bloomington Bloomington IL 54,566 8 1992  
7 Peoria, City Of Peoria AZ 50,618 1 1989  
8 Manteca, City Of Manteca CA 43,000 1 1987  
9 West Bernardino CWD Rialto CA 41,454 1 1987  
10 Gilbert, Town Of Gilbert AZ 40,000 1 1989  
11 Interstate Water Company Danville IL 38,000 7 1991  
12 Jurupa CSD Riverside CA 34,000 1 1986  
13 Richland, City Of Richland WA 32,600 1 1993  
14 Bowling Green, City Of Bowling Green OH 30,000 1 1986  
15 Del Este WC - #4 Empire Modesto CA 25,770 1 1988

* The Columbus water system has exceeded the nitrate standard since 1989. However, under an agreement with the state they are allowed to exceed the standard as long as they notify water drinkers (Evans 1995).

Source: EPA. Safe Drinking Water Information System. 1996.