Auxiliary water sources regarding cross connections can fall under the supervision of which entity?

• A. a state environmental agency
• B. a local water committee
• C. a primary agency
• D. the EPA

Answer: (C)

Auxiliary water sources and cross connections are managed by the lead state authority responsible for drinking water. This primary agency sets the rules, approves backflow prevention devices, certifies testers, and enforces compliance across water systems. While the EPA provides national standards, day-to-day supervision of cross-connection programs is handled at the state level by this primary agency. Local water committees operate the system, but they don’t provide the formal regulatory oversight, and state environmental agencies typically cover broader environmental concerns rather than the specific cross-connection program.