Average 77 ppm across 242 postcodes served.
United Utilities serves around 7 million customers across the north west of England. Much of the supply comes from upland reservoirs in the Lake District and Pennines, producing predominantly soft water.
At 77 ppm on average, United Utilities ranks as slightly hard water. See how it compares across the UK in our 50 softest water areas ranking.
Every postcode district, sorted by hardness.
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