Appendix B and Appendix C Section 6 update the District’s cross-connection control requirements, mandating that all testable backflow prevention devices be tested at installation and annually by state‑certified technicians approved by the District. Owners must respond within 45 days of a test due notice and repair within 60 days of a repair due notice, or the District may perform the work, bill the owner, and assess a 500 backflow test and repair fee, with potential daily penalties up to 500 for ongoing violations. This program creates ongoing demand for certified backflow testing, repair, and replacement services across the District’s commercial, multifamily, and higher‑risk customers.Vendors providing cross‑connection surveys, device inventories, annual testing, repairs, and reporting can partner with property managers and the District to maintain compliance, reduce enforcement actions, and standardize device management under these stricter rules.

District reserves inspection and enforcement rights and can terminate service or levy fines up to 500 per day for noncompliance in addition to the 500 backflow test/repair fee.