What to know
- approved potable water
- cross-connection
- air gap
- backflow prevention
Facilities and Equipment
Water, plumbing, and backflow
This is a high value exam point. Review the rules, common traps, and mapped questions before using the topic drill.
Practice This TopicWhat people miss
- Not recognizing a submerged hose as a cross-connection
- Confusing air gaps with other backflow devices