Harrisonburg Water Hardness & Quality Report (2026)

Harrisonburg, Virginia, the independent city in the Shenandoah Valley — the 'Friendly City,' home of James Madison University and Eastern Mennonite University, a major Shenandoah Valley agricultural hub (Virginia's poultry capital — Rockingham County is the largest poultry-producing county in Virginia), and a growing immigrant and refugee community — draws its municipal water supply from the North River (North Fork Shenandoah River tributary) via the City of Harrisonburg Department of Public Utilities Water Division. Water hardness in Harrisonburg measures 105.5 mg/L — classified as moderately hard.

Harrisonburg's moderate hardness — softer than the deeper calcareous formations of the Shenandoah Valley — reflects the North River watershed's upper Shenandoah Valley geology. The North River above Harrisonburg drains: the Shenandoah Valley's Valley and Ridge Province — Ordovician New Market Limestone (the Rockingham County calcareous Ordovician limestone — a major valley floor carbonate formation); the Silurian Massanutten Sandstone (calcareous-poor siliceous sandstone of Massanutten Mountain — contributing softer water from the mountain flanks); and the Precambrian Blue Ridge basement crystalline terrain (calcium-poor). The mixed carbonate valley floor and calcareous-poor mountain terrain produces the moderate 105.5 mg/L at Harrisonburg.

At 105.5 mg/L, Harrisonburg residents encounter moderate scale accumulation. Faucet aerators and showerheads develop deposits after several months — monthly cleaning with citric acid solution is practical maintenance. City of Harrisonburg Department of Public Utilities Water Division consistently delivers water meeting all Virginia DEQ and EPA Safe Drinking Water Act requirements.