Sayyed Mohammad Al-Musawi, Sayyed Mohammad al-Musawi is originally from Iraq and heads up the World Ahlul Bayt Islamic League in London. Other than being involved in various humanitarian projects, he frequently responds to... Answered 3 months ago

Provided that the Najis item (e.g. blood, urine etc) is no more existing in the washing basin, and you use tab water, the washing basin is not Najis.