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| Table 4-25 | |
| Population Served by All Public Water Supplies Potentially Contaminated with Agricultural Chemicals, in Idaho, the Region, and the U.S., 1987 | |
| Population Served by Public Water Supplies | |||||
| Potentially Contaminated Counties | |||||
| Groundwater Source[1] |
Surface and Groundwater |
Groundwater Only[2] |
Potentially Contaminated Counties |
||
| (%) | (1,000s) | (1,000s) | (N) | (%)[3] | |
| Idaho | 83 | 271 | 225 | 6 | 14 |
| Alaska | 60 | - | - | - | - |
| Montana | 35 | 85 | 30 | 5 | 9 |
| Nevada | 46 | 0 | 0 | 0 | 0 |
| Oregon | 29 | 53 | 15 | 1 | 3 |
| Utah | 51 | 0 | 0 | 0 | 0 |
| Washington | 64 | 484 | 310 | 13 | 33 |
| Wyoming | 38 | 7 | 3 | 1 | 4 |
| U.S. | 81,850 | 34,492 | 1,437 | - | |
| Source: | E. G. Nielsen and L. K. Lee, The Magnitude & Costs of Groundwater Contamination from Agricultural Chemicals: A National Perspective (U.S. Department of Agriculture, Economic Research Service, Natural Resource Economics Division, 1987), Staff Report AGES 8 |
| Note: | Data may not add to totals due to rounding. |
| [1] | Calculated as the total state population served by public groundwater supplies divided by the total state population served by all public supplies. |
| [2] | Estimated by multiplying the number of people served by public surface water and groundwater supplies by the percentage of people served by public supplies with a groundwater source. |
| [3] | Calculated as the number of potentially contaminated counties divided by the total number of counties in the state. |
Compiled by: Diane Prorak, data input assisted by:
Robert Anton-Erik
Contact: Lily Wai
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