If there is a petrol or diesel taste and/or odour to the water from your kitchen tap please contact your water supplier straight away. Please do not drink the water or use it for cooking until you have sought advice.
Please check if you have had any work done at the property (for example on the heating system), if you have any oil fired heating/storage tanks on the premises or if you have recently had any oil leaks, i.e. a car or motorbike leaking oil. This is the most common cause for this type of issue.