Spring Hill Water Hardness & Quality Report (2026)

Spring Hill Water Department serves approximately 54,886 people across Spring Hill, Tennessee (Williamson County). The utility sources surface water and operates a conventional filtration treatment plant at 199 Town Center Parkway, Spring Hill, TN 37174 (contact: 931-479-1942). The system uses chlorine and hydrogen peroxide as disinfectants to maintain compliance with federal and state standards. Turbidity testing from the 2024 Water Quality Report shows the utility achieved 100% compliance with the 0.15 NTU turbidity limit in 95% of monthly samples, with the highest single measurement at 0.138 NTU.

Spring Hill's water supply draws from the Cumberland River watershed in Middle Tennessee, an area underlain by Ordovician-age limestone and dolomite formations characteristic of the Eastern Highland Rim aquifer system. This geological setting produces water with moderate mineral content. The rapid infiltration of surface water through less mineral-laden sediments in this region, compared to areas over the Cumberland Plateau to the east, results in a water supply that is generally softer than many other Tennessee municipalities.

At the hardness levels typical for this region, scale buildup on fixtures and appliances is minimal, and most households do not require water softening treatment — standard maintenance of water-using appliances is generally sufficient. The utility reports that all water meets EPA health standards, though 2 contaminants were identified above EPA health-based guidelines (MCLGs). Spring Hill's water source has been rated as slightly susceptible to potential contamination. The 2024 Water Quality Report documents testing for over 80 contaminants, with treatment via conventional filtration and disinfection maintaining full regulatory compliance.