We moved into our rented house a year ago. At that time the ventilation in the bathroom was poor. We noticed a pink stain/ mark had appeared under our wash basket on the vinyl. Since then we have tried bleach and mould remover to try and solve the problem but to no use. What can we do as we are moving out in less than a month?
Lead in water can cause discolouration
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This sounds like a dampness issue which has resulted in mould growth, it is actually a type of water-borne bacteria, Serratia marcescens. Where moisture from under the vinyl has come through. No quick fit here I am afraid, the only solution would be to replace.
Replace the vinyl as it's cheap to buy,use the original as a template