10/12/2026
🚨 HOMEOWNER ALERT: SEPTIC TANKS & RETAINING WALLS! 🚨
Did you know that building a retaining wall around or over a septic tank can create serious structural and safety concerns?
⚠️ HERE'S WHY:
Septic tanks are designed to hold wastewater and support approved earth loads above them. They are NOT engineered to withstand the lateral pressure, sliding forces, overturning forces or shifting loads associated with retaining walls. Residential code (R404.4)
❌ MODIFYING A SEPTIC TANK CAN COMPROMISE ITS APPROVED DESIGN!
Septic tanks must meet specific construction and manufacturer standards.
⚠️ WHY DOES THIS MATTER?
Improper construction can lead to structural damage, tank failure, and costly repairs. Modifying a septic tank or pouring a retaining wall around it may compromise its approved design and violate SC DES Regulation 61-56-503, potentially resulting in a failed septic inspection.
🏠 Before building a retaining wall near your septic system, make sure you know exactly where your tank is located! Protect your property. Protect you septic system.
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