Lewisburg Water Hardness & Quality Report (2026)

Lewisburg Water and Wastewater, also known as Lewisburg Water Association, provides water to about 12,000 residents in Lewisburg and surrounding areas of Marshall County, Tennessee. Their water comes from two main sources: surface water drawn from the Duck River, located nine miles north of town, and groundwater tapped from three wells. These wells access the Sparta Sand Aquifer and the Winona/Tallahassee Aquifers. While specific treatment plant names aren't provided, the utility processes this mixed supply to meet stringent EPA standards before it reaches homes and businesses.

Geologically, Lewisburg sits in a region with diverse rock formations. The Duck River flows through the Central Basin province, traversing Mississippian-era limestone and shale units like the Warsaw and Fort Payne formations. These dense carbonate rocks can contribute significant dissolved minerals to the surface water. In contrast, the groundwater comes from aquifers in the Eastern Highland Rim. The Sparta Sand Aquifer and Winona Formation consist of Cenozoic sandstone and limestone, but their high permeability allows for rapid water recharge through less mineral-laden sands and sediments. This geological difference generally results in softer water from the wells compared to the river supply.

Because Lewisburg receives a relatively soft water supply, homeowners typically experience less scale buildup on pipes, faucets, and appliances like water heaters and dishwashers. Soap lathers easily, and you'll likely notice fewer spots on glassware after washing. While a water softener isn't usually necessary, extremely soft water can sometimes increase the risk of corrosion in metal plumbing over time. If you notice issues like pinhole leaks, it might be worth consulting with Lewisburg Water and Wastewater about potential solutions, such as phosphate inhibitors. Recent water quality reports confirm the system consistently meets EPA safety standards, with routine testing covering a wide range of potential contaminants.