Values for particular locations will differ according to local conditions. The county has 84 public-water systems. These systems serve communities ranging from small trailer courts to the city of Springfield. Table 1 lists the major public water systems, along with the population served, primary water source, estimated daily water usage and treatment plant capacity. These public-water systems provide water for domestic, commercial and industrial uses, which should be considered when using the data in Table 1.
Ground water is the only source used by public water systems in the county.
Further, nearly 23 percent of all households have a private well. Water Use in Clark County, Ohio. Served by Clark County Water and Sewer District, which also serves Medway, Northridge and part of Enon. The majority of ground water in Clark County comes from unconsolidated aquifers of sand and gravel. As water moves through the fractured limestone underlying the county, it dissolves and carries in solution minerals contained in the bedrock.