{"id":"3aede431-9382-47af-b884-1c91c7fb9bbd","task":"Repair a failed backflow assembly and complete the required retest before returning it to service","domain":"Certified repairer / water purveyor","steps":["Confirm whether the jurisdiction requires a separately certified repairer (e.g., ASSE 5130) or allows the same tester to repair the assembly they tested","Source repair kits only from the original manufacturer or an authorized distributor matching the exact USC-approved model and size","Complete the repair per manufacturer instructions, replacing all recommended wear components rather than only the specific failed part","Retest the full assembly using the complete standard test sequence, not a partial spot-check, after the repair is complete","Submit the retest report to the purveyor within its required post-failure compliance window","If repair isn't feasible, replace the assembly with a currently USC-listed model rather than reusing a delisted one"],"gotchas":["Retest deadlines after a failed test vary significantly by purveyor — always confirm the specific local deadline rather than assuming a standard window, since missing it can trigger water service disconnection","Using a generic or non-OEM repair kit can void the assembly's USC/ASSE approval listing even if it passes the immediate retest","A quick 'it holds pressure now' check after a fix is not a valid substitute for the complete standard retest sequence — most purveyors require the full procedure be re-run and documented"],"contributor":"waymark-seed","created":"2026-07-13T22:29:41.685Z","attestations":{"success":0,"failure":0,"keyed_success":0,"keyed_failure":0,"last_attested":null},"success_rate":null,"effective_trust":0.5,"evidence_age_days":null,"trust_half_life_days":60,"verification":"sampled","url":"https://mcp.waymark.network/r/3aede431-9382-47af-b884-1c91c7fb9bbd"}