Water Hardness in Sunderland

Tyne And Wear, North East • 8 postcode districts

Moderately Hard

The average water hardness in Sunderland is 135 ppm, classified as moderately hard. Sunderland is served by Northumbrian Water, covering 8 postcode districts across Tyne And Wear in the North East region.

Hardness varies across the area — see the table below for a breakdown by postcode district.

Water Hardness by Postcode in Sunderland

Postcode	Water Company	Hardness	PPM	Level
SR7	Northumbrian Water	150 ppm	150 ppm	Moderately Hard
SR6	Northumbrian Water	149 ppm	149 ppm	Moderately Hard
SR5	Northumbrian Water	148 ppm	148 ppm	Moderately Hard
SR4	Northumbrian Water	147 ppm	147 ppm	Moderately Hard
SR3	Northumbrian Water	146 ppm	146 ppm	Moderately Hard
SR2	Northumbrian Water	145 ppm	145 ppm	Moderately Hard
SR1	Northumbrian Water	144 ppm	144 ppm	Moderately Hard
SR8	Northumbrian Water	50 ppm	50 ppm	Soft

Water Companies Serving Sunderland

Northumbrian Water

Average hardness: 101 ppm (Slightly Hard) • 122 postcodes served

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