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Water supplies at events

If you are hosting a large event you must have a wholesome water supply free from bacteria, parasites and chemical contamination for drinking, food preparation and personal hygiene.

Failure to ensure that the water supply is safe may in some circumstances prevent your event from going ahead if Mendip District Council or Bristol Water feel that there is a significant risk to consumers.  If you are planning on using any of the water sources discussed below or any combination of those listed, please contact us to discuss your plans so that we can assist you in having a safe water supply.

All water supplies should be installed with due regard for water safety following the code of practice for temporary water supplies: BS 8551:2011: Provision and management of temporary water supplies and distribution networks -Code of practice.

Using mains water at events

Providing mains water to a third party e.g. food traders constitutes a Private Distribution System under the Private Water Supplies Regulations 2009.  As the event organiser you are responsible for any deterioration in the quality of the water supplied from the water main to the final consumer.  

  • You are required under the Water Supply (Water Fittings) Regulations 1999 to notify Bristol Water of your intention to use a mains water supply, even if it is only a temporary arrangement.   Please contact the Water Regulations Department at Bristol Water on 0117 9638516 or email waterregulations@bristolwater.co.uk
  • You may need to consider if water treatment is required to supplement the residual chlorine levels of the mains water to ensure that the water remains safe while being stored and distributed around the site.
  • The supply network must be clearly mapped and provided to Mendip District Council detailing all pipelines, tanks, pressure breaks, treatment systems if applicable and taps etc.
  • To demonstrate to Mendip District Council that the supply is safe, the water will need to be sampled prior to the event.
  • You must have an emergency water plan in place detailing how you would provide an alternative water supply in the event of loss of supply or contamination of the supply.

Using tankered water at events

Tankered water includes water stored or distributed from any mobile or static water tanks (E.g. pillow tanks) and water bowsers.  As the event organiser you will be responsible for any deterioration in the quality of the water supplied.

  • To demonstrate to Mendip District Council that the supply is safe, the water will need to be sampled prior to the event.
  • Tanks must be cleaned before use and before refilling.
  • Only fill tanks with water from a known source, preferably a mains water supply.
  • If tanker is emptied within 48hrs of deployment, sampling is not required.
  • If the tanker is still in use after 48hrs further sampling will be required to ensure the water remains safe to drink.
  • The supply network must be clearly mapped and provided to Mendip District Council detailing all pipelines, tanks, pressure breaks, treatment systems if applicable and taps etc.
  • You must have an emergency water plan in place detailing how you would provide an alternative water supply in the event of loss of supply or contamination of the supply.

Using private water supplies at events

If you plan to use a private water supply such as a spring, well, borehole the supply must be registered with Mendip District Council. 

  • The water must be treated before drinking e.g. UV or Chlorination etc and comply with the Private Water Supplies Regulations 2009.
  • To demonstrate to Mendip District Council that the supply is safe clean drinking water, the supply will need to be sampled prior to the event.
  • The supply network must be clearly mapped and provided to Mendip District Council detailing all pipelines, tanks, pressure breaks, treatment systems if applicable and taps etc.
  • The supply must be risk assessed in accordance with the Private Water Supplies Regulations 2009. Please contact Mendip District Council to arrange this.
  • You must have an emergency water plan in place detailing how you would provide an alternative water supply in the event of loss of supply or contamination of the supply.
Last modified: 08 November 2017