In 2026, as “Water Shedding” becomes a permanent fixture of South African life, businesses and homeowners are racing to install bulk storage. However, many are unaware that a water tank is considered a “structure” under the National Building Regulations (NBR). Simply putting a tank on a stand isn’t enough—it must adhere to specific SANS 10400 parts to be legally compliant, insurable, and safe.
1. Fire Protection Compliance (SANS 10400-T)
If your tank is intended for fire sprinklers or hydrants, compliance is mandatory and strictly audited. Under SANS 10400-T, fire water tanks must meet precise pressure and capacity requirements. For commercial properties, the Automatic Sprinkler Inspection Bureau (ASIB) often requires specialized steel tanks that can withstand specific environmental stresses. If a fire occurs and your tank wasn’t installed to SANS 10400-T standards, your insurance provider has legal grounds to reject the claim.
2. Structural Safety & Foundations (SANS 10400-B & H)
A full 250,000L tank weighs 250 tonnes. If the foundation fails, the resulting “tsunami” can destroy property and risk lives. For bulk storage, the tank stand or sand pad must be “deemed-to-satisfy” the NBR. This often requires a structural engineer’s sign-off on the base. Our modular steel tanks are engineered to distribute weight more effectively than a cluster of small plastic tanks, making it easier to meet SANS 10400-H (Foundations) standards.
3. Potable Water & Health (SANS 241)
While SANS 10400 governs the structure, SANS 241 governs the water quality. If you are plumbing your tank into a school, clinic, or office for drinking water, the tank liner must be food-grade and the system must prevent “backwash” or “backflow” into the municipal line. SANS 10400-P (Drainage) also applies if you are integrating tanks into a greywater or conservancy system.
4. Local Municipal By-Laws
Beyond the national SANS codes, individual municipalities (like Joburg or Cape Town) have specific by-laws regarding placement. This includes how close a tank can be to a neighbor’s boundary wall and rules regarding visible infrastructure in certain zones. Requirements often ensure the installation isn’t a “nuisance” to the surrounding community.
Why “Professional Installation” is Your Best Insurance
In 2026, a “DIY” approach to bulk water storage is a massive financial and legal liability. At Oasis Tanks, we provide the technical specifications and high-durability Aluzinc-coated steel structures that help your site meet the Deemed-to-Satisfy requirements of the National Building Regulations.