Hard Water Regions in the UK
Soft to
Soft to Soft to
Soft to
moderately soft
moderately softmoderately soft
moderately soft
0 - 100mg/l as
calcium carbonate
equivalent
Slightly hard to
Slightly hard to Slightly hard to
Slightly hard to
moderately hard
moderately hardmoderately hard
moderately hard
100 - 200mg/l as
calcium carbonate
equivalent
Hard to very hard
Hard to very hardHard to very hard
Hard to very hard
Above 200mg/l as
calcium carbonate
equivalent
25
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