Public pools reminded to avoid heavy penalties with an automated dosing system

Waterco Limited

Wednesday, 18 September, 2013


International swimming pool and water treatment specialist Waterco Ltd is reminding all public pool owners in NSW to make the switch to an automated or continuous metered disinfectant dosing system.

NSW Health brought in new regulations making the use of these systems compulsory for all public pools in September 2012, with certain other states and territories recommending their use.

Automated systems ensure the condition of the pool water is kept clean and healthy by constantly monitoring and controlling the pH and the oxidation reduction potential (ORP).


“The pH level is important, because the efficiency of the sanitiser is related to the pH level,” explains Waterco Water Treatment Product Manager Victor Quijada. “If you use chlorine as a sanitiser and the pH goes over 7.8, the chlorine will lose about 80% of its efficiency.

“ORP is measured in mV and is a measurement of the capacity of a sanitiser to oxidise and destroy organic matter. For chlorine the recommended value is 720 mV. If you have higher bather load, the chlorine demand will increase; and as a direct result, the pool will experience a drop in the ORP value, indicating that more sanitiser is required.”



Under the NSW health regulations, pools that are required to use an automated system include pools in hotels, motels, holiday units and other accommodation; clubs; workplaces; schools; and hospitals.

Non-compliance with the new regulations can result in penalties of up to $17,000 for an individual or $85,000 for a corporation.

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