1-15: General Information
Hard Water Area Map
The hard water map, shown in Figure 1-1, denes hard water areas in the continental
United States which compromise uid related components such as hoses, ttings, heaters,
pumps, valves and water-cooled engines. For other countries, hard water area maps can
be obtained from geological societies.
Figure 8-1. Hard Water Map of Mainland United States
The map shown in Figure 1-1 is provided for general reference only. Water
hardness in your geographical location should be conrmed by testing.
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