RG - 476A Public Water System Guide to Responding to a Backflow Incidenthttps://www.tceq.texas.gov/downloads/drinking-water/plan-technical-review/prevention/rg-476.pdf/viewhttps://www.tceq.texas.gov/@@site-logo/TCEQ-logo-header.png
RG - 476
A Public Water System Guide to Responding to a Backflow Incident