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Table 4

Reports & Consumer Guides

Pouring It On: Table 4

February 1, 1996

Drinking water supplies for many California cities are contaminated with nitrate above the federal health standard

Rank System City 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 Los Angeles Los Angeles 3,600,000 6/15/95 1.1% 190 12.5
2 City Of Santa Ana Santa Ana 293,700 11/22/95 24.0% 146 12.9
3 Eastern MWD San Jacinto 253,705 5/9/95 3.7% 54 12.2
4 City Of Riverside Riverside 245,000 11/30/95 6.6% 457 35.6
5 Glendale-City, Water Dept. Glendale 184,000 11/7/95 5.4% 331 11.9
6 California Water Service Bakersfield 182,670 7/13/95 3.6% 357 13.1
7 City Of Modesto Modesto 180,320 10/7/94 7.7% 260 13.9
8 City Of Pasadena Pasadena 153,217 6/23/93 8.3% 24 12.8
9 San Gabriel Valley Water Co. El Monte 150,105 3/13/95 3.2% 317 12.3
10 City Of Garden Grove Garden Grove 148,000 1/12/93 1.3% 77 14.5
11 City Of Ontario Ontario 143,285 1/25/94 1.1% 179 10.2
12 Pomona- City, Water Dept. Pomona 136,525 12/4/95 38.0% 739 22.5
13 Cucamonga CWD Rancho Cucamonga 128,000 11/22/95 11.3% 160 15.5
14 Desert Water Agency Palm Springs 125,000 1/27/93 1.6% 61 11.8
15 City Of Corona Corona 104,000 8/9/95 50.0% 44 26.7
16 San Gabriel Valley WC Fontana 102,599 11/7/95 9.2% 295 18.3
17 California Water Service Salinas 100,300 9/8/94 5.3% 114 13.3
18 Suburban Water Systems San Jose 93,758 11/15/95 17.9% 563 30.9
19 Daly City MWU Daly City 92,311 10/19/95 50.0% 18 15.1
20 City Of Alhambra Alhambra 86,300 6/8/94 5.7% 35 12.7
21 California Water Service Visalia 82,300 4/8/93 0.5% 182 10.0
22 Cal-Water Service Co. Chico 73,220 12/15/94 2.3% 177 13.6
23 Palmdale WD Palmdale 70,000 2/2/95 4.9% 41 12.3
24 Redlands City MUD Redlands 69,300 5/16/95 4.0% 430 36.0
25 City Of Upland Upland 66,383 5/31/94 1.7% 59 17.5
26 Casitas Municipal WD Oakview 60,000 2/21/95 50.0% 2 12.0
27 California Water Service South San Francisco 56,200 12/29/94 40.0% 25 18.4
28 East Valley WD San Bernardino 55,000 10/12/95 6.3% 573 16.7
29 Calif Water Service Los Altos 53,740 3/21/94 1.3% 80 10.0
30 City Of Chino Chino 52,130 10/26/95 35.3% 85 19.2