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26/30484500 DC BS 7592-2. Water quality - Sampling for Pseudomonas aeruginosa and other waterborne pathogens in water systems. Code of practice, 2026
- 30484500
- BS 7592-2_ v1.0 (1) [Go to Page]
- DRAFT standard BS ####:YYYY [Go to Page]
- BSI - Cover page
- Foreword [Go to Page]
- Publishing information
- Information about this document
- Use of this document
- Presentational conventions
- Contractual and legal considerations
- 0 Introduction
- 0.1 General
- 0.2 Sampling in healthcare settings
- 0.3 Non-healthcare settings
- 0.4 Importance of standardized sampling
- 1 SECTION 1 Scope
- 2 Normative references
- 3 Terms and Definitions
- 4 General [Go to Page]
- 4.1 Sampler competence
- 4.2 Reasons for sampling [Go to Page]
- 4.2.1 Routine or planned sampling
- 4.2.2 Non-routine/reactive sampling
- 4.2.3 Outbreak samples
- 4.3 Sampling rationale
- 4.4 Routine sampling of simple systems and equipment
- 4.5 Sampling framework
- 4.6 Sampling plans [Go to Page]
- 4.6.1 General
- 4.6.2 Development of sampling plans
- 4.6.3 Sampling plans for commissioning and handover
- 4.6.4 Resampling for investigations of systemic contamination
- 4.7 Timing of sampling
- 5 Survey and sampling [Go to Page]
- 5.1 General principles
- 5.2 Identification of sources and stakeholder input
- 5.3 Survey of water systems
- 5.4 Alignment of sampling plans with site survey and risk assessment
- 5.5 Sampling to verify disinfection of reused materials, components and fittings (non-healthcare premises)
- 6 Sampling procedures [Go to Page]
- 6.1 General
- 6.2 Preparation before sampling [Go to Page]
- 6.2.1 General
- 6.2.2 Apparatus and materials
- 6.2.3 Apparatus and materials for healthcare settings
- 6.2.4 Prevention of cross-contamination during sampling
- 6.2.5 Sample containers
- 6.3 Biocide neutralizing agents
- 6.4 Safety of sampling personnel [Go to Page]
- 6.4.1 General
- 6.4.2 Task-specific risk assessment
- 6.5 Temperature measurement
- 6.6 Sample types [Go to Page]
- 6.6.1 General
- 6.6.2 Pre-flush and post-flush samples
- 6.6.3 Collection of pre-flush samples from individual outlets
- 6.6.4 Collection of post-flush samples, with disinfection, from individual outlets
- 6.6.5 Sampling from mixer taps, including thermostatic mixer taps, and showers
- 6.6.6 Use of swabs and transport media
- 6.7 Biofilm samples
- 6.8 Biofilm samples from water systems
- 6.9 Labelling
- 6.10 Dip samples from pools, spa pools and other recreational waters
- 6.11 Other sources
- 6.12 Sampling as part of an incident outbreak investigation
- 6.13 Sampling for waterborne pathogens other than PA during case and/or outbreak investigations
- 6.14 Sampling of environmental sources for typing when there is a clinical isolate
- 6.15 Safety of sampling personnel
- 6.16 Additional requirements and evidence within outbreaks
- 7 Sample transport and storage
- SECTION 2: HEALTHCARE
- 8 Sampling and water safety plans in healthcare [Go to Page]
- 8.1 General
- 8.2 Risk-based sampling framework
- 8.3 Sampling implementation in healthcare premises - water systems and assets
- 8.4 Sampling personnel, preparation and competence
- 8.5 Sampling during commissioning and recommissioning of healthcare water systems [Go to Page]
- 8.5.1 General
- 8.5.2 Governance, risk assessment and commissioning sampling plans
- 8.5.3 Timing and scope of commissioning sampling
- 8.5.4 Verification of outlet safety and the "no single sample" principle [Go to Page]
- 8.5.4.1 General
- 8.5.4.2 High-risk areas
- 8.5.4.3 Medium-risk areas
- 8.5.4.4 Low-risk areas
- 8.5.5 Sampling prior to handover
- 8.5.6 Sampling to verify disinfection of recycled materials, components and fittings
- 9 Sampling procedures in healthcare premises [Go to Page]
- 9.1 Apparatus and materials for healthcare sampling
- 9.2 Precautions during sampling operations
- 9.3 Prevention of cross-contamination
- 9.4 Sampling in patient areas and chain of custody
- 9.5 Response to results, remediation and resampling
- 10 Routine and reactive sampling in healthcare [Go to Page]
- 10.1 General
- 10.2 Frequency of sampling
- 10.3 Identification and documentation of sampling locations
- 10.4 Typing of isolates
- 10.5 Sampling for incidents and outbreaks
- 10.6 Sampling approach during outbreaks
- 10.7 Sampling from the sanitary pipework system
- 10.8 Precautionary requirements for sampling drains, traps and wastewater-associated components
- 10.9 Other sources
- 11 Augmented care cases [Go to Page]
- 11.1 General
- 11.2 Risk stratification and indications for sampling
- 11.3 Controls and conditions for sampling in augmented care areas
- 11.4 Other sources to be considered in outbreak investigations
- Annex A (normative) Sampling from commercial premises for investigation of cases or outbreaks
- Annex B (informative) Investigative public-health sampling in swimming and hydrotherapy pool environments including sampling of inflatables, floats, toys, hydrotherapy aids and pool covers
- Annex C (informative) Sampling hot tubs, including portable and inflatable hot tubs, spa pools and garden whirlpools used in domestic settings
- Annex D (normative) Additional sampling sites in healthcare premises
- Bibliography [Go to Page]
