UV System Performance Audits for Reuse Applications

Many installed UV systems operate inefficiently over time, which increases operation and maintenance (O&M) costs and can lead to microbial permit violations. A WateReuse Research Foundation (WRRF) project titled “UV Disinfection Knowledgebase for Reuse Applications” is evaluating these issues. The objectives of this project were to benchmark the performance of UV systems used in reuse applications, develop recommendations for UV implementation for non- and direct potable reuse, and develop troubleshooting tools that utilities can use to quantify and optimize UV system operation. Lessons learned from conversations with operators along with data collected during the UV system performance audits provides good recommendations for better UV implementation.