Checklist 5: Disinfection
1. Technology Selection
☐ Disinfection technology selected
The method is chosen based on raw water quality, distribution system needs, regulations, and operational capacity (e.g. UV, chlorination, ozonation, or combinations).
2. Contact Time Design
☐ Contact time calculated
Required contact time is defined according to disinfectant type, water quality, temperature, and target microorganisms to ensure effective inactivation.
3. Process Control
☐ Dosing monitored
For chemical systems, dosing is continuously controlled and verified to ensure effective disinfection without overdosing or instability.
4. UV Performance
☐ UV performance verified
UV systems are checked through intensity monitoring, sensor calibration, lamp condition, and flow verification to ensure proper disinfection output.
5. Emergency Procedures
☐ Emergency procedures available
Clear response plans are defined for failures such as power loss, equipment breakdown, or contamination events.
6. Spare Parts
☐ Spare parts available
Critical components (e.g. UV lamps, sensors, dosing pumps, valves) are stocked to minimize downtime.
7. Operator Training
☐ Operators trained
Staff are trained in system operation, monitoring, maintenance, and emergency response to ensure safe and stable operation.
8. Documentation
☐ Documentation maintained
All operating data, maintenance activities, calibration records, and incidents are documented for compliance and system control.