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What happens if my private water supply fails its routine sampling?

If we take a routine sample from a private water supply and it fails to meet the national drinking water standards we will contact the affected properties and provide advice.

If the supply is considered to be hazardous to health, for example as a result of certain bacteria being present within the sample then:

  • we will notify all users on that supply of the failure and provide advice on any action to be taken, for example to boil all water before use;
  • we may carry out an investigation to identify the cause of the failure;
  • we will serve a Notice on the person(s) responsible for the supply. This will detail the action that needs to be undertaken to restore the water quality to the required level. Failure to comply with the Notice may result in prosecution. Once the water quality is at the required level we will notify all the users of the supply.

If the supply fails to meet the national drinking water standards but the failure is not considered to be a hazard to health, for example high levels of iron which may stain laundry but may not be considered a risk to health, then:

  • we will notify all users on that supply and provide advice on any actions that would improve the quality;
  • we may carry out an investigation to identify the cause of the failure;
  • we will work informally with the person(s) responsible for that supply to try and improve the quality of the supply.