New South Memphis Water Hardness & Quality Report (2026)

New South Memphis is served by Memphis Light, Gas and Water (MLGW) — one of the largest municipal water utilities in the South — drawing entirely from the Memphis Sand Aquifer, a deep confined aquifer system underlying the entire Memphis metropolitan area. The Memphis Sand Aquifer is composed of Eocene-age (Claiborne Group) glauconitic and quartzitic sands deposited roughly 40–50 million years ago in the ancient Mississippi Embayment sea. MLGW operates dozens of production wells tapping this aquifer at depths of 400–500 feet, and the aquifer's natural filtration through fine sand provides exceptional clarity and purity. This system provides groundwater to over a million people across the greater Memphis area without surface water dependency.

The moderate hardness of 171 mg/L from the Memphis Sand Aquifer is somewhat atypical for a deep sand aquifer — most such systems yield softer water. However, the Memphis Sand sits above and is hydraulically connected in places to the Paleocene Midway Group marine clays and calcareous sediments, and lateral recharge from the Mississippi River alluvial plain adds modest mineral loading. The aquifer matrix also contains calcareous cement material within the Claiborne Group sands, contributing calcium carbonate dissolution over long groundwater residence times at depth in the Embayment basin.

At this moderate hardness level, New South Memphis residents experience standard hard-water effects — scale on fixtures and inside appliances, reduced soap lather, and some dishwasher spotting. The Memphis Sand water is prized for its exceptional clarity and natural filtration character, and MLGW's treatment is minimal compared to surface water utilities. Descaling coffee machines and kettles every 3 months and adding rinse-aid to dishwashers are practical measures. The aquifer's depth and natural protection from surface contamination make it one of the highest-quality large municipal groundwater sources in the United States.