Morristown Water Hardness & Quality Report (2026)

Morristown Utilities provides municipal water service to Morristown and surrounding areas in Hamblen County, Tennessee. The utility draws its primary water supply from Cherokee Lake, a major reservoir in the region. Water is treated at the municipal treatment facility before distribution to customers throughout the service area. The watershed feeding Cherokee Lake drains portions of the Cumberland Plateau and Ridge and Valley provinces, covering the broader East Tennessee region.

Both the Cumberland Plateau and Ridge and Valley provinces are underlain by Paleozoic-age limestone, dolomite, and shale formations. These carbonate-rich rock layers are highly soluble, and as precipitation infiltrates and surface water flows through them, significant quantities of calcium and magnesium ions dissolve into the water. This geological setting in the Ridge and Valley physiographic province is responsible for the hard water supply characteristic of East Tennessee municipalities.

At hard hardness levels, Morristown residents can expect visible scale buildup on fixtures, reduced efficiency of water heaters and appliances, and increased soap consumption for cleaning. Scale deposits accumulate inside pipes, on showerheads, and on heating elements, potentially reducing water pressure and appliance lifespan. A point-of-use or whole-house water softener is recommended for households seeking to mitigate these effects. According to Morristown Utilities' published water quality data, pH ranges from 7.0 to 7.9, indicating neutral to slightly alkaline water, and iron levels are very low (0.00–0.03 mg/L). The utility treats water to meet all Safe Drinking Water Act standards.