Risk assessment

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Risk Assessments of Private Water Supplies

Risk assessments of PWS look at the source of the supply as well as the surrounding area to see if contamination could occur. It also involves checks of any treatment systems, the storage tanks and the pipework. The risk assessment aims to identify actual and potential hazards that may affect the health of those drinking the water. Where the water is found to be unsafe, the Local Authority must ensure that the supply is improved by the owners or people who control the supply.

Risk assessment of Private Distribution System include; pipes, storage tanks, stand pipes, etc. which joins the building/ properties owned by the site to those owned or occupied by another company, organisation or person. The risk assessment will then determine parameters that should be monitored for, along with certain recommended parameters.

Regulation 6 requires local authorities to risk assess all private supplies (except single domestic dwellings) at least once every five years. We are now in the second 5 year period which will end 31 December 2019.

Whenever a local authority becomes aware of changes in relation to the nature, quality or operation of a private supply in their area already on the record, the risk assessment for that supply should be updated to reflect the new information.

Any private supply newly identified and added to the local authority record for the first time after 1 January 2015 should be risk assessed as soon as reasonably practicable and the scope of any routine monitoring determined in accordance with the completed risk assessment.

Local Authorities are allowed to charge for this service up to a maximum stated in the Private Water Supplies Regulations 2009.