Softened wholesome water
Approved Document G, Sanitation, hot water safety and water efficiency, 2015 edition with 2016 amendments, defines softened wholesome water as: ‘…water which would be regarded as wholesome for the purposes of regulations made under section 67 of the Water Industry Act 1991 (standards of wholesomeness) as they apply for the purposes of Part G of Schedule 1 in accordance with paragraph (2c) but for the presence of sodium in excess of the level specified in those regulations if it is caused by a water softener or water softening process which reduces the concentrations of calcium and magnesium.’
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