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Risk assessments

PWS riskUnder the Private Water Supplies Regulations 2016, local authorities have a duty to carry out risk assessments on all private water supplies other than those that supply single, non-commercial premises.  The risk assessment aims to identify actual or potential causes of contamination so that suitable actions can be taken to prevent or control problems, and to ensure that the quality of the drinking water is as good as it can be.

A risk assessment is a useful exercise for anyone on a private water supply to do, not just those people who have a supply for multiple dwellings or commercial premises and are therefore required to have a risk assessment undertaken. An action plan of improvements is drawn up as necessary, and the results help dictate how often and for what parameters future sampling is carried out.  The District Council can charge for this report, with fees currently set at £366.50 per supply. Details on how costs are apportioned between different outlets on a supply are detailed in our document Apportioning Costs [PDF 68KB].

Undertaking a risk assessment is a statutory duty on all but single domestic supplies and must be done every five years.  High risk supplies will be fully risk assessed again and charged.

Private Distribution Systems

The Regulations also require risk assessments to be carried out on private distribution systems.  Where water originally supplied by a water undertaker (e.g. Severn Trent Water) to the boundary of a property is then further distributed through a private distribution network to buildings/properties on the site. For example, a caravan or camping site could be a private distribution system. The risk assessment will dictate a programme of sampling of the system.

If you have any questions or concerns about your supply please contact the Environmental Health section.

Related Links

Private Water Supplies

Drinking Water Inspectorate

Environmental Health

Town Hall, Bank Road
Matlock, Derbyshire DE4 3NN
01629 761 212
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