If you get your drinking water from somewhere other than a Water Company (Anglian Water or Severn Trent) then it is likely you have a private water supply.
The water source may be from a well, borehole, spring, stream, river, ponds or rainwater. The supply may serve just one property or several properties through a network of pipes. The quality of private water supplies can vary. Some have adequate treatment and are well managed, but others may present a risk to health due to the quality of the water. If you own or use a private supply it is important that you are aware of the quality of the supply and the risks associated with it and take necessary steps to ensure it remains safe.
North Kesteven District Council can offer advice regarding your supply and arrange testing. You can read more about private water supplies on the Drinking Water Inspectorate (DWI) website.