As a proprietor or manager of commercial property using mains feed water for your business use, it is your responsibility to check that your business complies with the water regulations. You are responsible that used water is not wasted or the use of the water for your business does not present a risk of contamination to the water supply. It is a legal requirement to comply with the requirements of the water regulations .Failure to do so would be a criminal offence and may result in legal enforcement action being taken and the water supply shut off to the premises.