Backflow Prevention

• Acceptability of two single check valves in place of a double check valve

  Area of Interest : Backflow prevention Topic : Fluid category Title : Acceptability of two single check valves in place of a double check valve Clause Reference : Schedule 2 paragraph 15(5) Reference Number : B35 Decision Date : read more

• Alignment of the installation requirements for Type DC arrangements

  Area of Interest : Backflow prevention Topic : Type DC arrangements Title : Alignment of the installation requirements for Type DC arrangements Clause Reference : Schedule 2 paragraph 15(5) Reference Number : B39 Decision Date : read more

• Back up supplies for grey water systems

  Area of Interest : Backflow prevention Topic : Fluid category Title : Back up supplies for grey water systems Clause Reference : Schedule 2 paragraph 15 (4) Reference Number : B43 Decision Date : May 2010 As an alternative to read more

• Backflow protection for hydrants or washouts

  Area of Interest : Backflow prevention Topic : Fluid category Title : Backflow protection for hydrants or washouts Clause Reference : Schedule 2 paragraph 15 & G15.3 Reference Number : B29 Decision Date : May 2004 Below read more

• Backflow protection for storage cisterns water storing wholesome water

  Area of Interest : Backflow prevention Topic : Back flow protection Title : Backflow protection for storage cisterns water storing wholesome water Clause Reference : Schedule 2 paragraph 15 (4) (b) Reference Number : B42 Decision read more

• Backflow protection for water supplies to construction sites

  Area of Interest : Backflow prevention Topic : Backflow protection Title : Backflow protection for water supplies to construction sites Clause Reference : Schedule 2 paragraph 15 & G15.3 Reference Number : B27 Decision Date : read more

• Backflow protection requirements for reverse osmosis units

  Area of Interest : Backflow prevention Topic : Fluid category Title : Backflow protection requirements for reverse osmosis units Clause Reference : Schedule 2 paragraph 15 & G15.3 Reference Number : B38 Decision Date : May read more

• Backflow risk in dog and cat kennels

  Area of Interest : Backflow prevention Topic : Fluid category Title : Backflow risk in dog and cat kennels Clause Reference : Schedule 2 paragraph 15 & G15.3 Reference Number : B06 Decision Date : June 2001 Hose union taps read more

• Bain Marie

  Area of Interest : Backflow prevention Topic : Fluid category Title : Bain Marie Clause Reference : Schedule 2 paragraph 15 & G15.3 Reference Number : B56 Decision Date : March 2014 Water suppliers take a risk based approach read more

• Baptism pools

  Area of Interest : Backflow prevention Topic : Fluid category Title : Baptism pools Clause Reference : Schedule 2 paragraph 15 & G15.3 Reference Number : B33 Decision Date : May 2005 Pools used by religious groups for read more

• Baths for assisted bathing of the disabled

  Area of Interest : Backflow prevention Topic : Fluid category Title : Baths for assisted bathing of the disabled Clause Reference : Schedule 2 paragraph 15 & G15.3 Reference Number : B37 Decision Date : May 2006 Unless a read more

• Baths – residential care accommodation

  Area of Interest : Backflow prevention Topic : Fluid category Title : Baths - residential care accommodation Clause Reference : Schedule 2 paragraph 15 & G15.3 Reference Number : B14 Decision Date : February 2002 read more

• Cement batching plant

  Area of Interest : Backflow prevention Topic : Fluid category Title : Cement batching plant Clause Reference : Schedule 2 paragraph 15 & G15.3 Reference Number : B25 Decision Date : October 2002 (Revised May 2004) Cement read more

• Commercial bread makers

  Area of Interest: Backflow prevention Topic: Fluid category Title: Commercial bread makers Regulation/Byelaw Clause Reference: Schedule 2 paragraph 15 & G15.3 Reference Number: B61 Decision Date: June 2014 Defra Guidance has read more

• Compost irrigation in wormeries

  Area of Interest : Backflow prevention Topic : Fluid category Title : Compost irrigation in wormeries Clause Reference : Schedule 2 paragraph 15 & G15.3 Reference Number : B31 Decision Date : May 2004 Providing that the read more

• Cross connections - permissible arrangements

  Area of Interest : Backflow prevention Topic : Maintaining supplies Title : Cross connections - permissible arrangements Clause Reference : Regulation 5 & Schedule 2 paragraph 15 Reference Number : B16 Decision Date : February read more

• Demarcation between a fluid category 3 and fluid category 5 zone of risk in a bathroom

  Area of Interest : Backflow prevention Topic : Backflow risk of shower hoses Title : Demarcation between a fluid category 3 and fluid category 5 zone of risk in a bathroom Clause Reference : Schedule 2 paragraph 15 & G15.5 read more

• Disconnection of temporary filling loops

  Area of Interest : Backflow prevention Topic : Temporary filling loops Title : Disconnection of temporary filling loops Clause Reference : Schedule 2 paragraph 24 & G 24.2 (a) Reference Number : B54 Decision Date : June 2012 read more

• Dishwashing machines in small nursing homes

  Area of Interest : Backflow prevention Topic : Fluid category Title : Dishwashing machines in small nursing homes Clause Reference : Schedule 2 paragraph 15 & G15.3 Reference Number : B17 Decision Date : February 2002 In read more

• Domestic appliances which comply with BS EN 61770

  Area of Interest : Backflow prevention Topic : Fluid category Title : Domestic appliances which comply with BS EN 61770 Clause Reference : Schedule 2 paragraph 15 (5) Reference Number : B48 Decision Date : October 2011 The read more

• Dosing equipment - temporary connection under the provision of Regulation 2(2).

  Area of Interest : Backflow prevention Topic : Temporary supplies Title : Dosing equipment - temporary connection under the provision of Regulation 2(2). Clause Reference : Regulation 2(2) Reference Number : B11 Decision Date : read more

• Dry cleaning machines

  Area of Interest : Backflow prevention Topic : Fluid category Title : Dry cleaning machines Clause Reference : Schedule 2 paragraph 15 & G15.3 Reference Number : B05 Decision Date : June 2001 The closed circuit cooling read more

• Filling and topping up heating system primary circuits.

  Area of Interest : Backflow prevention Topic : Water heaters Title : Filling and topping up heating system primary circuits. Clause Reference : Schedule 2 paragraph 15 : G15.3 & G24.2 Reference Number : B22 Decision Date : read more

• Fire sprinkler systems – backflow protection of domestic water supplies

  Area of Interest : Backflow prevention Topic : Fire sprinklers Title : Fire sprinkler systems - backflow protection Clause Reference : Regulation 3 Schedule 2 paragraph 15 Reference Number : B18 Decision Date : February 2002 read more

• Fire station fire hydrants

  Area of Interest : Backflow prevention Topic : Fluid category Title : Fire station fire hydrants Clause Reference : Schedule 2 paragraph 15 & G15.3 Reference Number : B46 Decision Date : February 2011 Fire hydrants used read more

• Flexible hoses used in catering premises for vegetable preparation

  Area of Interest : Backflow prevention Topic : Flexible hoses Title : Flexible hoses used in catering premises for vegetable preparation Clause Reference : Schedule 2 paragraph 15 & G15.3 Reference Number : B21 Decision Date : read more

• Flushing water systems prior to commissioning

  Area of Interest : Backflow prevention Topic : Fluid category Title : Flushing water systems prior to commissioning Clause Reference : Schedule 2 paragraph 15 & G15.3 Reference Number : B12 Decision Date : February 2002 The read more

• Glass washers

  Area of Interest : Backflow prevention Topic : Fluid category Title : Glass washers Clause Reference : Schedule 2 paragraph 15(3) Reference Number : B24 Decision Date : October 2002 (Revised March 2013) Glass washers may read more

• High risk tap installations

  Area of Interest : Backflow prevention Topic : Fluid category Title : High risk tap installations Clause Reference : Schedule 2 paragraph 15 & G15.3 Reference Number : B34 Decision Date : May 2005 (revised June 2015) Taps read more

• Hose union tap backflow risk

  Area of Interest : Backflow prevention Topic : Hose union taps Title : Hose union tap backflow risk Clause Reference : Schedule 2 paragraph 15 Reference Number : B63 Decision Date : December 2019 The backflow risks associated read more

• Hose union taps used in bin stores

  Area of Interest : Backflow prevention Topic : Fluid category Title : Hose union taps used in bin stores Clause Reference : Schedule 2 paragraph 15 & G15.3 Reference Number : B30 Decision Date : May 2004 (revised June & read more

• Humidifiers

  Area of Interest : Backflow prevention Topic : Fluid category Title : Humidifiers Clause Reference : Schedule 2 paragraph 15 & G15.3 Reference Number : B40 Decision Date : May 2010 Those Humidifiers which introduce water read more

• Laboratories – risk of contamination by backflow

  Area of Interest : Backflow prevention Topic : Risk assessment Title : Laboratories - backflow risk Clause Reference : Regulation 3, Schedule 2 paragraph 15 & G15.3 Reference Number : B01 Decision Date : October 2000 (Revised read more

• Pre-rinse spray units for catering use

  Area of Interest : Backflow prevention Topic : Maintaining an air gap Title : Pre-rinse spray units for catering use Clause Reference : Schedule 2 paragraph 15 & G15.3 Reference Number : B19 Decision Date : June 2002 A hose read more

• Pressure washers

  Area of Interest : Backflow prevention Topic : Fluid category Title : Pressure washers Clause Reference : Schedule 2 paragraph 15 & G15.3 Reference Number : B07 Decision Date : June 2001 Pressure washers used for cleaning read more

• Private hydrants used exclusively for fire figthing

  Area of Interest : Backflow prevention Topic : Fluid category Title : Private hydrants used exclusively for fire fighting purpose Clause Reference : Schedule 2 paragraph 15 & G15.3 Reference Number : B60 Decision Date : June read more

• Renal Dialysis units emergency water supplies to hospitals

  Area of Interest : Backflow prevention Topic : Emergency supplies Title : Renal Dialysis units - emergency water supplies to hospitals Clause Reference : Schedule 2 paragraph 15 (1) Reference Number : B03 Decision Date : February read more

• Restraining rings for backflow protection of flexible shower hoses

  Area of Interest : Backflow prevention Topic : Flexible hoses Title : Restraining rings for backflow protection of flexible shower hoses Clause Reference : Schedule 2 paragraph 15 & G15.3 Reference Number : B20 Decision Date : read more

• RPZ valves - testing & record keeping

  Area of Interest : Backflow prevention Topic : RPZ Valves Title : RPZ valves - testing and record keeping Clause Reference : Regulation 4 & G15.7 Reference Number : B02 Decision Date : Oct 2000 (revised June 2002 & April read more

• Safety devices uncontrolled heat source

  Area of Interest : Backflow prevention Topic : Fluid category Title : Safety devices that introduce water to cool systems heated by an uncontrolled heat source Clause Reference : Schedule 2 paragraph 15 & G15.3 Reference Number : read more

• Secondary backflow protection for Caravan and residential park homes

  Area of Interest : Backflow prevention Topic : Secondary backflow protection Title :Secondarybackflow protection for caravan/holiday homes and residential park homes Clause Reference : Schedule 2 paragraph 15 & G15.24a Reference read more

• Spa, floatation and whirlpool baths

  Area of Interest : Backflow prevention Topic : Fluid category Title : Spa, floatation and whirlpool baths Clause Reference : Schedule 2 paragraph 15 & G15.3 Reference Number : B44 Decision Date : September 2010 Water in all read more

• Steam ovens – catering equipment

  Area of Interest : Backflow prevention Topic : Fluid category Title : Steam ovens - catering equipment Clause Reference : Schedule 2 paragraph 15 & G15.3 Reference Number : B04 Decision Date : February 2001 Steam ovens that read more

• Storage cisterns supplying both laboratory taps and wash hand basins

  Area of Interest : Backflow prevention Topic : Fluid category Title : Storage cisterns supplying both laboratory taps and wash hand basins Clause Reference : Regulation 3 (2) Reference Number : B49 Decision Date : October 2011 read more

• Temporary water supplies to agricultural shows and festivals etc.

  Area of Interest : Backflow prevention Topic : Backflow protection Title : Temporary water supplies to agricultural shows and festivals etc. Clause Reference : Regulation 2(2) Reference Number : B23 Decision Date : October 2002 read more

• Use of Type DC arrangements in laboratories

  Area of Interest : Backflow prevention Topic : Type DC Title : Use of Type DC arrangements in laboratories Clause Reference : Regulation 4 (6) (c) Reference Number : B41 Decision Date : May 2010 (revised March 2014 & January read more

• Verifiable check valves installed below ground

  Area of Interest : Backflow prevention Topic : Whole site and zone backflow prevention Title : Verifiable check valves installed below ground Clause Reference : Schedule 2 paragraph 15(4) & G15.24 Reference Number : B32 read more

• Washbasins in hairdressing saloons.

  Area of Interest : Backflow prevention Topic : Fluid category Title : Washbasins in hairdressing salons. Clause Reference : Schedule 2 paragraph 15 & G15.3 Reference Number : B10 Decision Date : October 2001(Revised October read more

• washing of animals

  Area of Interest : Backflow prevention Topic : Fluid category Title : Washing of animals Clause Reference : Regulation 3 (2) Reference Number : B55 Decision Date : June 2013 The washing of animals, in all properties, is regarded read more

• Water Supply Industry Interpretations and Advice 2

  Area of Interest : WCs Topic : Warning pipes Title : Internal warning pipes (overflows) Clause Reference : Schedule 2 paragraph 25 (1)(h) & G25.8 Reference Number : WC01 Decision Date : June & October 2000 The use of read more

• WCs

  Area of Interest : Backflow Prevention Topic : Fluid category Title : WCs Clause Reference : Regulation 4 & Schedule 2 paragraph 15 Reference Number : B58 Decision Date : March 2014 Although a Type AUK1 air gap must read more

• Zone protection in hotels and student accommodation

  Area of Interest : Backflow prevention Topic : Zone protection Title : Zone protection in hotels and student accommodation Clause Reference : Schedule 2 paragraph 15 (4)(b) & G15.24 Reference Number : B50 Decision Date : read more