Hebburn Water Hardness & Quality Report (2026)

Hebburn, the Borough of South Tyneside town on the south bank of the River Tyne between Jarrow and Gateshead — historic for its shipbuilding yards, its Chemical Works and its connection to the Jarrow Crusade — is supplied by Northumbrian Water primarily from Kielder Water in Northumberland, transferred via the Kielder Water Transfer Scheme and the River Tyne aqueduct to Horsley and Whittle Dene Water Treatment Works in the Tyne valley. Kielder Water drains the Silurian and Ordovician greywacke of south Northumberland — calcium-depleted sedimentary rocks producing very soft water. At 95 mg/L with TDS 221.9 mg/L (ratio 2.34), Hebburn's supply retains a predominantly soft Kielder character — much softer than the Magnesian Limestone-dominated zones of the County Durham coast (Seaham 178 mg/L, Newton Aycliffe 208 mg/L), because Hebburn is in the South Tyneside distribution zone supplied directly from the Tyne valley infrastructure rather than from the Magnesian Limestone groundwater that dominates the coastal Durham supply. The very low TDS (221.9 mg/L) and low ratio confirm a predominantly surface-water, soft-supply character.

The Kielder Water reservoir in Northumberland, the UK's largest by volume, drains the Silurian greywacke and mudstone of the Border hills — ancient compressed marine sedimentary rock entirely devoid of calcium carbonate. River Tyne water from this catchment at 40–70 mg/L is the primary input for the South Tyneside supply. Modest blending with Pennine-carboniferous limestone catchment water from the South Tyne elevates Hebburn's supply to 95 mg/L — soft rather than very soft, but far below the 150–200 mg/L hardness of the Magnesian Limestone zones.

At 95 mg/L Hebburn's water is soft and limescale management is not a significant domestic concern. Kettles need descaling only every two to three months with a brief citric acid or white vinegar treatment. Shower screens remain relatively clear. Washing-up liquid lathers well. Combi-boilers and white goods face low scaling risk. Hebburn's community identity — Jarrow March heritage, the Palmer's shipyard tradition and the South Tyneside industrial riverside — is served by the soft Kielder Water supply that makes South Tyneside one of the softer zones in the North East.