What is the fine-grained topic of the following text: In the event of an emergency, if you experience a potential public health issue (eg loss of supply, low pressure, taste, odour or discolouration of your water, or sewer flooding) you may contact Yorkshire Water wholesale directly on this phone number and we will investigate - 0345 1 24 24 24. Only return the topic.
Contacting Yorkshire Water wholesale in case of public health emergencies