Case Studies Index


2018/06 (PDF 301KB) - Section 80 Notice appeal

2018/05 (PDF 129KB) - Long standing water quality contamination

2018/04 (PDF 167KB) - Change of supply for long-term remediation

2018/03 (PDF 58KB) - Private water supply dispute and disconnection threat

2018/02 (PDF 363KB) - Prosecution for non-compliance of Regulation 18 Notice

2018/01 (PDF 105KB) - Rainwater harvesting private water supply


2017/05 (PDF 56KB) - Faecal contamination of a supply

2017/04 (PDF 79KB) - Investigation of unusual taste and odour

2017/03 (PDF 53KB) - Water quality affected by external quarrying activities

2017/02 (PDF 64KB) - Dispute between relevant persons on a large Regulation 8 supply

2017/01 (PDF 76KB) - Unsubstantiated report of illness from consumption of a private supply


2016/03 (PDF 63KB) - Private supplies in salad growing nurseries

2016/02 (PDF 115KB) - Successful prosecution of a relevant person for noncompliance with a Regulation 18 Notice

2016/01 (PDF 83KB) - Change of status of a Regulation 8 supply


2015/08 (PDF 3442KB) - Risks associated with change of use from a supply for non-domestic purposes to domestic purposes

2015/07 (PDF 499KB) - An outbreak of Escherichia coli 0157 infection amongst users of a private water supply when staying in holiday accommodation

2015/06 (PDF 104KB) - Inappropriate use of a private supply by a food business can give rise to substantive economic, reputational and regulatory costs

2015/05 (PDF 94KB) - Reinforcing the challenges associated with identifying Regulation 8 supplies and the importance of fully understanding the Regulations to ensure the correct response during an investigation

2015/04 (PDF 172KB) - Further evidence of farms as a category of premises at high risk of causing water to be unsafe as a consequence of unsuitable water supply arrangements

2015/03 (PDF 74KB) - Identification of a new Regulation 8 supply, and the need for local authorities and water companies to adopt a joint approach

2015/02 (PDF 75KB) - Consequences of a lack of procedures, site schematic or communication about the operating regime for a private water supply

2015/01 (PDF 256KB) - Cross connection with a public supply


2014/14 (PDF 112KB) - Treatment requirements at a public buildingcross connection with a public supply

2014/13 (PDF 105KB) - What constitutes a ‘commercial premises’ within the context of the legislation?

2014/12 (PDF 104KB) - Action in the event of a failure at a single domestic dwelling

2014/11 (PDF 125KB) - Illegal connection

2014/10 (PDF 119KB) - Remediation of a Regulation 9 borehole supply leading to the creation of a new Regulation 8 supply – an exception to the guidance on Regulation 8 supplies?

2014/09 (PDF 98KB) - Disconnection of a supply

2014/08 (PDF 115KB) - Dealing with common enforcement challenges: as illustrated by a case of a Regulation 18 Notice served on a large private supply to a school

2014/07 (PDF 90KB) - Change of use from non-domestic to domestic purposes at a public building

2014/06 (PDF 284KB) - Successful prosecution of a relevant person for non-compliance with a Regulation 18 Notice

2014/05 (PDF 92KB) - The objective and purpose of Regulation 8

2014/04 (PDF 102KB) - Deershed Festival

2014/03 (PDF 130KB) - Determining the validity of historic agreements concerning the source of a private water supply

2014/02 (PDF 140KB) - Classification of tourist springs and wholesomeness issues

2014/01 (PDF 208KB) - Verifying that improvement have been made to a village supply


2013/21 (PDF 55KB) - An example of a simple, but effective, regime for managing a private supply serving a public building

2013/20 (PDF 88KB) - Exercising the power to enhance monitoring as a means of overcoming obdurate owners

2013/19 (PDF 164KB) - Water safety plan approach to improving the safety of a private supply

2013/18 (PDF 55KB) - Private supplies require active management to ensure they are safe

2013/17 (PDF 59KB) - Illness reported by a visitor to a holiday cottage where the multi-barrier approach to water treatment had not been followed

2013/16 (PDF 55KB) - Are local authority records of private supplies being taken into account proactively and beneficially during planning and housing decisions?

2013/15 (PDF 60KB) - Realising wider benefits from local authority private supply data returns

2013/14 (PDF 118KB) - Land agents – a sectorial group in need of water safety information?

2013/13 (PDF 190KB) - The challenge of keeping private water supply records up to date – a joint local authority and water company task

2013/12 (PDF 125KB) - Deciding whether a situation comprises a public or a private water supply

2013/11 (PDF 55KB) - Regulation 8 supplies: out of sight out of mind?

2013/10 (PDF 60KB) - Managing the risk to private supplies from chemical spills

2013/09 (PDF 63KB) - Magistrates dismiss an appeal by a private supply owner against a Regulation 18 Notice

2013/08 (PDF 59KB) - The public health value of keeping records of private supplies whether or not these are used for domestic purposes

2013/07 (PDF 144KB) - Further evidence of farms as a category of premises at high risk of causing water to be unsafe as a consequence of unsuitable water supply arrangements

2013/06 (PDF 192KB) - Case of E.coli 0157 associated with a private supply to a rented property

2013/05 (PDF 60KB) - Enforcement action where covenants exist

2013/04 (PDF 59KB) - Options for dealing with non-compliance with a Notice

2013/03 (PDF 65KB) - Commissioning of a private supply to a large hospital

2013/02 (PDF 84KB) - The risk to water safety posed by eco-building design and the absence of effective procedures for scrutiny of the water supply aspects of planning applications

2013/01 (PDF 186KB) - Why having regard to Regulation 5 is preventative and will save costly complex investigations and remedies


2012/10 (PDF 121KB) - Local authority successful in an appeal against a Regulation 18 Notice

2012/09 (PDF 186KB) - Improving the safety and sustainability of a failing rural community water supply in a cost effective manner

2012/08 (PDF 59KB) - Oil contamination of a private supply

2012/07 (PDF 59KB) - Risk to a domestic water supply from another supply used for non- domestic purposes on a commercial premises

2012/06 (PDF 153KB) - Repetition of illness among seasonal workers at a fruit farm associated with mismanagement of the domestic and non-domestic water supply arrangements on the premises

2012/05 (PDF 59KB) - Effective collaboration between a local authority and a water company to resolve a sufficiency problem with a Regulation 8 supply

2012/04 (PDF 60KB) - Appeal against a Section 80 Notice

2012/03 (PDF 54KB) - Borehole risk assessment

2012/02 (PDF125KB) - Contamination event due to insufficient source protection

2012/01 (PDF 150KB) - Conflict of interests in relation to a failing private supply located in a local authority’s area where the relevant person (owner and manager) is the local authority


2011/12 (PDF 150KB) - Prohibition of disconnection and securing the sufficiency of private supplies

2011/11 (PDF 150KB) - The implications of not establishing that a laboratory is accredited and using only an approved or authorised method of analysis

2011/10 (PDF 150KB) - Consumer complaint of illness highlighting an inadequate approach to maintenance by the owner

2011/09(PDF 150KB) - Use of a Notice to secure the safety of a private supply through improved management arrangements

2011/08 (PDF 248KB) - Unsatisfactory water quality as a consequence of using an unapproved treatment system

2011/07 (PDF 103KB) - Change of use of a private supply from a single domestic dwelling to a food premises

2011/06 (PDF 101KB) - Lead in drinking water, the overlooked health risk in small domestic private supplies?

2011/05 (PDF 401KB) - Best practice in relation to co-regulation of drinking water safety at premises by water companies and local authorities

2011/04 (PDF 103KB) - Use of Environment Agency data to inform audit monitoring

2011/03 (PDF 168KB) - Effective application of the Private Supply Regulations to benefit tourism and the local economy

2011/02 (PDF 102KB) - The need for a multi-barrier approach for a small surface water supply

2011/01 (PDF 102KB) - Deficiencies with a newly constructed borehole


2010/08 (PDF 251KB) - Spring supply serving a bed and breakfast business – mandatory action

2010/07 (PDF 213KB) - Surface water supply to a public building with accommodation – Risk assessment

2010/06 (PDF 118KB) - Failure of a borehole supply serving a public building

2010/05 (PDF 295KB) - Failure of a borehole supply serving rented property

2010/04 (PDF 101KB) - Arsenic in the supply to a holiday cottage – technical support and advice

2010/03 (PDF 116KB) - Spring supply to rented property – risk assessment and Notice

2010/02 (PDF 101KB) - Spring supply to a holiday cottage – benefit of risk assessment

2010/01 (PDF 169KB) - Small domestic surface water supply – Risk assessment and Notice


Page reviewed: 30 September 2019
Page modified: 30 September 2019

Drinking Water Inspectorate