Community contributors: 🌸陋室德馨newborn20180506🌺, Jessie, David
Summary
Key Points
Why it matters: 下水道溢流阀（ORG）是保护室内不被污水倒灌的重要安全机制，了解其工作原理能防止主管道堵塞破坏房屋地基。
当住宅外墙附近的溢流阀（ORG）出现持续冒水或底部积水时，通常意味着主污水管道存在堵塞。房东应通过水管工使用专业高压喷水与管道摄像头进行检查，确认堵塞位置与责任归属，避免盲目更换管道造成不必要的开支。
Practical Takeaway
Use this note as a practical prompt before making decisions. Check the rules in your state, keep written records, and seek qualified advice where needed.
Disclaimer
This note is edited by APOA from community discussions with private details removed where possible. It is general information only and is not legal, tax, financial, or property management advice.