Wq wawsaw 2014

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Wq wawsaw 2014

  1. 1. guardians of drinking water quality DRINKING WATER INSPECTORATE Drinking Water Safety – The Application and Outcome of Regulation • Marcus Rink • Deputy Chief Inspector (Operations) • Drinking Water Inspectorate Warsaw - 2014
  2. 2. guardians of drinking water quality DRINKING WATER INSPECTORATE Structure This presentation covers :- • The Directive • The Regulations • The Technical Regulator • Application of the Regulations • Outcomes of Regulation
  3. 3. guardians of drinking water quality DRINKING WATER INSPECTORATE • World Health Organisation (WHO) Guideline Values – Guidelines based on health impacts - not legally binding • EC Directives – 98/83 on the quality of water intended for human consumption • UK Primary Legislation – Water Act 1989 – Water Industry Act 1991 – Water Act 2003 • UK Secondary Legislation – Water Supply (Water Quality) Regulations 2000, (Amended 2010) • 2001 in Scotland, 2010 in Wales, and Northern Ireland • Private Water Supplies Regulations 2009 • Water Fittings Regulations 1999 • Information Direction – Water Industry (Suppliers’ Information Direction) 2009 Legislative Framework for Drinking Water Quality
  4. 4. guardians of drinking water quality DRINKING WATER INSPECTORATE • A4: Member States are under a duty to supply wholesome water. • A5: Quality standards must be set. • A6: Point of compliance at taps with a requirement that measures to eliminate risk including at treatment are taken and consumers informed • A7: Monitoring; regular and additional. • A8:Investigation and remediation of failure or potential danger. • A10:Substances and materials. Council Directive 98/83 – Key Articles
  5. 5. guardians of drinking water quality DRINKING WATER INSPECTORATE UK Water industry
  6. 6. guardians of drinking water quality DRINKING WATER INSPECTORATE • 24 Water Supply Companies in England, 3 in Wales (which are also in Eng), one in Scotland one in Northern Ireland • 4 other licensed companies in England,1 in Wales, none in Scotland or NI, (making up 9 insets) • Supply 13,898 Ml/d in England, 822 in Wales, 2,016 Ml/d in Scotland and 628 Ml/d in NI • 52 million people in England, 3 in Wales, 5 in Scotland 1.8 in NI) • 1,193 water treatment works in England and 88 in Wales, 273 in Scotland, 31 in NI • 3,995 service reservoirs in England, 630 in Wales, 1,055 in Scotland, 330 in NI • 262,852 km of water mains in England 31,110 in Wales, 47,000 in Scotland, 26,500 in NI • 1,581 water supply zones in England, 101 in Wales, 354 in Scotland, 55 in NI Water Supply in UK
  7. 7. guardians of drinking water quality DRINKING WATER INSPECTORATE European Law Secretary of State Local Authorities National Law Competition Commission Water companies Water industry regulation
  8. 8. guardians of drinking water quality DRINKING WATER INSPECTORATE • Water companies are under a duty to supply wholesome water • The supply of water unfit for human consumption is a criminal offence • Secretary of State has power to • make regulations • require information • appoint a Chief Inspector of Drinking Water • enforce if regulations are breached • Chief Inspector given specific powers in The Water Act 2003 Water Act 1989 & 2003, Water Industry Act 1991 Primary legislation
  9. 9. guardians of drinking water quality DRINKING WATER INSPECTORATE • Transpose and implement the 1998 Drinking Water Directive requirements • Implement the technical duties of primary legislation • Define wholesome water - regulation 4(2) – No substance or organism or parasite, (in conjunction with another or not), at a concentration that constitutes a potential danger to human health. – Any concentration in excess of the prescribed concentrations or values, (or as maybe less than the PCV’s) – Satisfies Nitrate/Nitrite formula. * Amended 2010 Water Supply (Water Quality) Regulations 2000*, 2001* in Scotland, 2007* in NI & 2010 in Wales Secondary legislation
  10. 10. guardians of drinking water quality DRINKING WATER INSPECTORATE • Enforceable water quality standards – Directive requirements • 28+ standards (e.g. E.coli; lead; Pesticides) – National requirements • 13 standards (e.g. Iron, Manganese, pH) • Indicator parameters (not necessarily un-wholesome) – 11 parameters (e.g. conductivity, pH, Sulphate, coliforms at taps) • Regulations also define requirements for: – Informing stakeholders – DWI, CCDCs, LAs, CCWater – Sampling & analysis – Investigations – treatment – approval of substances and products in contact with drinking water Water Supply (Water Quality) Regulations 2000 Secondary legislation
  11. 11. guardians of drinking water quality DRINKING WATER INSPECTORATE • Regulation 16a – Requirement for raw water monitoring • Regulation 19a – Domestic Distribution Systems and Public Buildings • Regulation 26 – sufficient preliminary treatment to prepare water for disinfection – all water must be disinfected prior to supply – design & continuously operate an adequate treatment process • Regulation 27 – risk assessment – Requirement for comprehensive risk assessment of each works and associated supply system • All risks from source to tap 2007 Key Amendments
  12. 12. guardians of drinking water quality DRINKING WATER INSPECTORATE • Regulation 19a – A failure is attributable to the domestic distribution system, or the maintenance of that system, in premises where water supplied for regulation 4(1) purposes is made available for use by members of the public – The water undertaker whose supply system is used for the purpose of a licensed water supplier making a supply of water to the premises, requiring it to exercise the power conferred by section 75(2) of the Act in respect of the failure. • Regulation 26 – Design, operate and maintain the disinfection process so as to keep disinfection bye-products as low as possible without compromising the effectiveness of the disinfection; and verify the effectiveness of the disinfection process.” 2010 Key Amendments
  13. 13. guardians of drinking water quality DRINKING WATER INSPECTORATE • Specifies information requirements of the Secretary of State (DWI) • Annual data returns – Zone boundaries, WTW & SRs in use • Monthly data returns – Results of all samples taken as part of regulatory programme – Report of investigations and remedial actions for any failure of standard • Provision of information on events, incidents & emergencies – Notification – 3-day report – 20-day report Water Industry (Suppliers’ Information Direction) 2012
  14. 14. guardians of drinking water quality DRINKING WATER INSPECTORATE • Independent drinking water quality regulator for England & Wales • Set up in 1990 by primary legislation • 40 staff, 30 warranted Inspectors • Main Duties – Obtain & publish information – Audit – Inspection – Enforcement – Prosecution – Technical Advice – Policy formulation Drinking Water Inspectorate
  15. 15. guardians of drinking water quality DRINKING WATER INSPECTORATE • Information supplied under Direction • Risk Assessments • Monthly water quality compliance returns on WTWs, SRs, zones • Numbers of consumer complaints (WQ only) • Events, Incidents ,Emergencies • Information gathered by Intervention • Audit • Investigation DWI Operational Activities
  16. 16. guardians of drinking water quality DRINKING WATER INSPECTORATE Operational Information Acquisition and Processing
  17. 17. guardians of drinking water quality DRINKING WATER INSPECTORATE Event or Audit Risk Score Company Assessment Score Response Category Orange Zone Light touch investigation (3b) In Depth investigation Yes No Short letter (email) Health parameter breach Red Zone Sense Check Green Zone Risk Based Approach to Assessment & Investigation
  18. 18. guardians of drinking water quality DRINKING WATER INSPECTORATE • Discolouration • Burst mains • Microbiological contamination • Source • Treatment • Reservoir integrity • Distribution • Disinfection / treatment failures • Source contamination of supply Assessment of Water Quality Events
  19. 19. guardians of drinking water quality DRINKING WATER INSPECTORATE Enforcement Mechanisms • Notice – Where a risk assessment identifies, (or fails to identify), a residual risk of supplying water potentially harmful to human health • Enforcement – Where water does not meet a standard in the regulations, company can apply for an Undertaking. • Prosecution – Supplying water unfit for human consumption – Failing to adequately treat and disinfect water prior to supply to consumers – Use of products or processes not meeting the requirements of regulation – Impeding the activities of an Inspector
  20. 20. guardians of drinking water quality DRINKING WATER INSPECTORATE Drinking water standards Compliance with Drinking Water Directive 0 0.5 1 1.5 2 2.5 Percentageofsamplesfailinginzones England and Wales Scotland Northern Ireland England 99.97% - Wales 99.96% Drinking water standards Compliance with Drinking Water Directive
  21. 21. guardians of drinking water quality DRINKING WATER INSPECTORATE Percentage of samples • Meeting the Lead standard of 10µg/l Improvements in drinking water quality 95 96 97 98 99 100 2001 2002 2003 2004 2005 2006 2007 2008 2009 Percentgemeetingstandard Year 10µg/l Industry
  22. 22. guardians of drinking water quality DRINKING WATER INSPECTORATE 2007 Improvements in drinking water quality 2012
  23. 23. guardians of drinking water quality DRINKING WATER INSPECTORATE 100,000 110,000 120,000 130,000 140,000 150,000 160,000 2006 2007 2008 2009 2010 Consumercontacts Consumer contacts down by one third Public water supplies Consumer contacts 2006-2010
  24. 24. guardians of drinking water quality DRINKING WATER INSPECTORATE Improvements in drinking water quality Percentage of samples meeting the pesticide standard of 0.1µg/l 99.84 99.86 99.88 99.90 99.92 99.94 99.96 99.98 100.00 2004 2005 2006 2007 2008 2009
  25. 25. guardians of drinking water quality DRINKING WATER INSPECTORATE Drinking Water Inspectorate  : marcus.rink@defra.gsi.gov.uk : www.dwi.gov.uk Further information

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