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Code of Practice

This code of practice outlines the history and regulations surrounding backflow prevention in New Zealand. It covers the legal requirements for boundary protection of drinking water supplies, including the use of internal protection and the implementation of safety plans. The code also includes guidelines for risk assessment, device registration, and specific customer responsibilities. The code is administered by the Ministry of Health through water assessors employed by local district health boards.

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Code of Practice

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  1. NZ Boundary Code of Practice

  2. History • 1961 Drinking Water Regulations covered Backflow but was loose. • “At the discretion of the Engineer” • 2013 Replacement Legislation. • Boundary Protection for Drinking Water Supplies

  3. 1991 NZ Building ActInternal Affairs • Backflow Section G12. • Internal Protection Only. • References AS 3500 & AS 2845 • Philosophy “If internal protection at potential source of contamination no Boundary protection required”

  4. Proactive backflow prevention • WaterSuppliers used 1961 Regulations with Installations from 1961 onwards. • Legal action between large Councils and organisations like Ports of Auckland /Hospitals were all sorted on the Court steps . • Water Managers frustrated . • Together with NZW Backflow Group approached MOH 1990

  5. Ministry Of Health • Had concerns for some time of NZ Water Quality and Safety. • MOH required plans for Water: • Catchment. • Treatment. • Distribution. • Backflow.

  6. Backflow GroupMOH • New Legislation. Legal Jargon “Managing the Risk” • Water Managers funded COP to guide Water Suppliers implementing bylaws • 2003 1st Code. • 2013 revised with more detail. • ONLINE VIEWING • Safety Plans NZ MOH. • Water NZ – Publications-Backflow Code of Practise

  7. CODE OF PRACTISEPart 1 • Guide lines for Water Suppliers. • Risk Assessment • Ownership. • Device Register • Backflow Prevention Programme • Policy Statement & Bylaw

  8. CODE OF PRACTICEPart 2 • Code of Practice for Boundary Backflow Protection. • Boundary Backflow Installations • Additional Installation • Requirements for Fire Systems • Testing Requirements • Responsible for Payment • Specific Customer • Responsibilities • Building Act Responsibilities • Removal of a Boundary Device

  9. NEXT STEPS • Safety Plans administered by MOH through Water Assessors employed by Local District Health Boards. • Points scored effect Water Rating for Water Suppliers. • Assessors check: • Catchment • Storage • Treatment • Distribution • Backflow

  10. WATER ASSESSORS • Enforcement • MOH have published list of all assessors listing names and which DHB they work for. • Committee has compiled this list adding contact details for committee members to share responsibility to contact & offer to make their job easier by List of questions to ask • What to watch out for • Training etc.

  11. INTERNAL PROTECTION • Leaky homes caused tighter regulations & awareness of responsibilities. • Swing to consultants for larger builds which include backflow rather than plumbers design and build. • Local Body Inspectors multi skilled • Ex builders inspecting plumbing • Ex plumbers inspecting buildings • Backflow writing Accepted Industry Survey Course funded by Water Managers Group

  12. CONTROVERSAL SUBJECTS 1 • Why and how did Australia allow the change to testing methods ? • NZ Backflow Group rejected changes & now list an Industry Acceptable Method of testing in G12

  13. CONTROVERSAL SUBJECTS 2 • Why and how did Australia allow a change of S/S material that only one manufacture could supply giving that company a monopoly ? • NZ Backflow Group accepted relative ASSE standards in the COP.

  14. Outcome

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