Corporate Directory

Lonza Water Treatment

Contact: Chris Smith
Address Level 1, 14-25 Easey Street Collingwood Victoria 3066 Australia Phone: 03 9417 2428 Work Fax: 03 5424 1288 Website:


Lonza Water Treatment is an Australian subsidiary of Lonza (formerly Arch Chemicals Inc.) and has been supplying the Australian water treatment market for over 20 years including our HTH® calcium hypochlorite (cal-hypo) products and Constant Chlor® (chlorine dosing) feeder systems.

Our water chlorination solutions combine industry approved calcium hypochlorite tablets & NSF approved feeding systems to provide a safe and reliable alternative to gaseous chlorine and sodium hypochlorite.

As the world’s largest calcium hypochlorite manufacturer our HTH® calcium hypochlorite tablets/Briquettes meet ADWG guidelines for quality in Australia and NSF/ANSI Standard 60 & 61 and AWWA-B300 standards for drinking water in the US.

  • Calcium hypochlorite – approved for disinfection and oxidation of drinking water in Australia since 1983 (NHMRC)
  • Safe and easy to handle as a dry product, supplied in buckets with a 2 year shelf life
  • High active ingredient at 68% available Chlorine by weight; 1kg HTH® adds 0.5ppm Chlorine to 1.35 megalitres

Constant Chlor® feeders offer a small footprint chlorination option with a patented spray system to create a consistent chlorine solution from HTH® Briquettes (cal-hypo) and are a reliable chlorination system for potable water and wastewater applications, service reservoirs and chlorine booster stations. Customers also use our products as backup to primary chlorination systems or in mobile or temporary situations as a flexible means of delivering chlorine quickly and effectively to any volume of water.

All our feeder units are available for a 3 month trial with technical and commissioning support from Lonza and many municipalities in Australia currently are adopting this technology to meet evolving network and regulatory standards for potable water.

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Level 1, 14-25 Easey Street Collingwood Victoria 3066 Australia


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