EUSR Endorsed Chlorination, De-Chlorination, Flushing & Sampling

This Chlorination, Flushing & Sampling Course covers both theoretical knowledge and practical skills, including:

Water Hygiene & Regulatory Requirements

• Overview of potable water system hygiene principles
• Legal and regulatory framework (BS EN 806, BS 8558, Water Regulations)
• Responsibilities of duty holders and water operatives
• Preventing contamination and maintaining clean network conditions

Chlorination & Disinfection Techniques

• Purpose and methods of disinfection in potable systems
• Chlorination procedures:
  • Chlorine dosing
  • Shock chlorination
  • Tablet and liquid chlorine use
• Calculating correct chlorine concentrations
• Contact time requirements and verification

Flushing Procedures

• Pre-commissioning and post-repair flushing requirements
• Techniques for clearing mains and service lines
• Ensuring correct flow, turbidity reduction, and visual inspection
• Establishing clean water pathways during construction activities

Water Sampling & Quality Testing

• How to take representative water samples
• Sampling protocols in line with UK water company and lab standards
• Use of sterile bottles and chain-of-custody procedures
• Parameters tested (e.g., chlorine residuals, microbiology indicators)
• Understanding laboratory reports and interpreting results

Documentation & Record Keeping

• Completing hygiene records, disinfection certificates, and flushing logs
• Recording chlorine concentration, contact time, and turbidity data
• Site audits, traceability, and evidence required for handover

Health & Safety Considerations

• Risk assessments and method statements for chlorination activities
• Safe handling and storage of chemicals
• Control measures for confined spaces, traffic management, and network pressure hazards
• PPE requirements and emergency procedures