National Norms and Standards relating to Environmental Health

19. Drinking water on the ship and at the port must regularly be tested to ensure that it is fit for humanconsumption both on an operational level and on compliance level.20. Documentation for water quality monitoring must be kept for assurance and analysis in the event ofan incident.21. Documents of inspection, maintenance, cleaning, disinfection (to include concentration and contacttime of disinfectant) and flushing should be kept and available for 12 months.22. Sampling must be done by Port Health Officials or other professionally trained personnel only.23. Sampling for ship water supply system, potable water for human consumption on the ship, for waterwith a temperature of between 25 °C and 50 °C must be done as prescribed in the GDWQ as well asin ISO 19458.24. Port Health Officials and the ship operators must have basic water treatment calibrated equipment athand for basic testing of turbidity, PH and disinfectant residual.Bunkering of ship water1. Bunkering of water must be done in accordance with the standards as set out in Guideline 2.3 of theWHO. Guide to Ship Sanitation. 3 rd edition.2. The ships operator must ensure that the quality and source water for ships conforms to the SANS241 before bunkering.3. Port Health Officials must conduct compliance monitoring to ensure no contamination of water takesplace during bunkering.Water production on board1. When sea water is to be treated on board sea for use as potable water, the processes conductedshould be in accordance to the requirements as specified in Guideline2.3 of the WHO. Guide to ShipSanitation. 3 rd edition.Potable water storage1. The storage of potable water on board should be done in accordance to the requirements asspecified Guideline 2.3 of the WHO. Guide to Ship Sanitation to prevent contamination of water.2. Port Health Officials must inspect empty tanks on a regular basis and take microbiological andchemical samples of the water.Ballast waterBallast water can carry hazards such as toxicogenic vibrio cholera that can be associated with choleraoutbreaks in port areas.1. Ballast water must be treated on board and sampled for the presence of hazardous pathogens andharmful organisms before it can be discharged into the marine environment.2. Ships should not be allowed to discharge ballast water or any liquid containing toxic waste or anyform of contamination, in areas where water for water supply is drawn or any other restricted area forthe disposal of waste by the local authority.3. Ballast water must comply with specified concentrations in terms of human health standards asoutlined in the WHO 4 th Edition Guidelines for drinking water.4. Hoses used to allow rapid discharge ballast water must be suitably labeled “FOR WASTEDISCHARGE ONLY”.5. Ballast water onboard ship must conform to the requirements as specified in the WHO Guide to ShipSanitation and the Handbook for Inspection of Ships and Issuance of Ship Sanitation Certificates;6. An approved Ballast water management plan must be in place;7. A ballast water record book must be kept;8. Ballast water must be safely treated and disposed off.DOH. Norms and standards for environmental health in South Africa Feb 2013 88