RG - 477A Public Water System Guide to Preparing a Backflow-Incident Emergency-Response Planhttps://www.tceq.texas.gov/downloads/drinking-water/plan-technical-review/prevention/rg-477.pdf/viewhttps://www.tceq.texas.gov/@@site-logo/TCEQ-logo-header.png
RG - 477
A Public Water System Guide to Preparing a Backflow-Incident Emergency-Response Plan