Water Hardness in Preston

Lancashire, North West • 11 postcode districts

Moderately Hard

The average water hardness in Preston is 122 ppm, classified as moderately hard. Preston is served by United Utilities, covering 11 postcode districts across Lancashire in the North West region.

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

Water Hardness by Postcode in Preston

Postcode	Water Company	Hardness	PPM	Level
PR9	United Utilities	131 ppm	131 ppm	Moderately Hard
PR8	United Utilities	130 ppm	130 ppm	Moderately Hard
PR7	United Utilities	129 ppm	129 ppm	Moderately Hard
PR6	United Utilities	128 ppm	128 ppm	Moderately Hard
PR5	United Utilities	127 ppm	127 ppm	Moderately Hard
PR4	United Utilities	126 ppm	126 ppm	Moderately Hard
PR3	United Utilities	125 ppm	125 ppm	Moderately Hard
PR2	United Utilities	124 ppm	124 ppm	Moderately Hard
PR1	United Utilities	123 ppm	123 ppm	Moderately Hard
PR26	United Utilities	102 ppm	102 ppm	Slightly Hard
PR25	United Utilities	101 ppm	101 ppm	Slightly Hard

Water Companies Serving Preston

United Utilities

Average hardness: 77 ppm (Slightly Hard) • 242 postcodes served

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