Same goal, different approach; Comparing DVGW & USEPA UV drinking water regulations
Annual Conference
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From the perspective of drinking water UV disinfection regulations, 2006 was a landmark year. It saw the release of both a new standard in Europe, the DVGW worksheet W294, and a new guideline in the US, the USEPA Ultraviolet Disinfection Guidance Manual. Whilst both seek to provide stakeholders with guidance on planning, operating and validating UV systems for drinking water applications, they take quite different approaches.
This presentation outlines the approach taken by these two agencies and details the key similarities and differences. Presenting also comparative data from validations undertaken on the same UV system with each approach. It shows example sizing and the consequential capital and operational costs differences between the two approaches.
The majority of drinking water UV installations in New Zealand have complied with DVGW W294, however 3 USEPA validated systems have been installed treating Carterton's supply and are covered as a specific case study.