Every plumbing system installed in the Kingdom — from a single villa in Riyadh to a residential tower in Jeddah – is designed, approved and inspected under the Saudi Building Code plumbing framework. For engineers, contractors and owners working with plastic piping, the practical question is what that framework actually requires: which materials may be used, how they must be installed and tested, and what documentation the approvals process expects.
This Saudi Building Code plumbing pipes guide explains the requirements in general, verifiable terms, so you can plan and specify with confidence. One important note before we begin: building codes are updated in editions and amended over time, and project approvals also depend on the authority having jurisdiction. Always confirm the details of any requirement against the current official edition of the code and your project consultant before you build or buy. What follows is a reliable map of the territory – not a substitute for the code itself.
The Framework: SBC 701 and Related Codes
The Saudi Building Code is a suite of codes published under the Saudi Building Code National Committee. The volume that governs plumbing is SBC 701, the Saudi Plumbing Code, covering water supply, sanitary drainage, venting, storm drainage and related systems in buildings. Companion volumes touch plumbing work indirectly – supports and penetrations, equipment, and the water conservation and energy requirements that influence fixture selection and hot water design.
SBC 701 is performance- and prescription-based in the style of international plumbing codes: it sets out what systems must achieve (safe water, protected drainage, no cross-contamination) and gives the tables, sizing methods and installation rules to achieve it. Municipal and project authorities – including the local municipality and, for water and wastewater connections, the relevant service providers — administer approvals and inspections against it. (Material choice interacts with these duties – see our comparison of PPR pipe vs CPVC in Saudi Arabia.)
Product Standards: SASO Approval of the Pipes Themselves
A plumbing code tells you how a system must perform; product standards prove that a specific pipe can perform. In Saudi Arabia, plastic pipes and fittings are regulated through SASO (Saudi Standards, Metrology and Quality Organization) standards, which for plastic piping systems are generally aligned with the corresponding international standards – for polypropylene piping systems, the ISO 15874 series is the reference standard covering pipes, fittings, joints and system fitness for purpose (see the ISO catalogue entry), with the DIN 8077/8078 series widely used for dimensions and pressure ratings.
In practice, this means:
- Pipes and PPR fittings should be manufactured and tested to the applicable SASO-adopted standard for their material and duty.
- Products typically require conformity marking and documentation — test reports, certificates and declarations – that consultants review during material submittals.
- Only products approved for the intended duty (notably potable water contact) may be used on drinking water systems – third-party potable-water schemes such as NSF International are a useful reference for what that approval involves.
When you select material, ask the manufacturer for the standard the product is made to, the pressure class and temperature rating, and its conformity documents. Those papers are part of code compliance, not paperwork for its own sake. The PPR pipe systems offered for Saudi projects are an example of how a manufacturer organises this information by diameter, class and application.
Saudi Building Code Plumbing Pipes in Practice
Approved materials for each duty
The code’s approach is that every part of the system must use materials approved for that specific service: pressure-rated pipe for water distribution, appropriate drainage-grade pipe and fittings for soil and waste, and suitable materials for vent and storm lines. A pipe approved for cold water distribution is not automatically approved for hot water or for drainage. For plastic systems this means matching the material, pressure class and temperature rating to the duty on each line – the same discipline your specification should follow on drawings and in the bill of quantities. Our guide to PPR vs PPR-CT and which to specify shows how that matching works in practice for hot water duties.
Safe water supply and cross-connection protection
Protecting potable water is a central theme of the code. Requirements address backflow prevention and cross-connection control where non-potable systems, storage tanks, pumps or equipment connect to the drinking water network; air gaps and approved devices are used according to the hazard. Storage tanks, a standard feature of Saudi buildings, must be arranged so the water they hold stays protected and wholesome. Plastic pipework contributes here by being corrosion-free and approved for potable contact, but the system design — valves, gaps, devices — is what the inspector will examine.
Sizing, pressure and water hammer
Distribution systems must be sized by the code’s methods so fixtures receive adequate flow and pressure without excessive velocity. Excessive pressure must be controlled, typically with pressure-reducing arrangements on boosted or high-head supplies, and water hammer – the shock wave from fast-closing valves – must be considered, particularly in towers and pumped villa systems. Supports, anchoring and expansion provisions form part of this: a system that moves, knocks or sags will not pass a careful inspection, whatever pipe it uses.
Drainage, venting and traps
On the drainage side, the code governs pipe sizing and gradients, venting to protect trap seals, cleanout access, and the separation of sanitary and storm systems. Plastic drainage pipework must be installed to line and grade with correct jointing and support; vent terminals and trap arrangements follow the code’s rules so sewer gases stay out of occupied space. Although this article focuses on pressure piping, remember that plastic pipe approvals on a project cover both sides of the system.
Installation quality: jointing, supports, protection
Codes consistently require workmanlike installation: joints made to the manufacturer’s method, pipes supported at the spacings the code and manufacturer specify, and protection where pipes pass through walls, floors and roofs or run exposed to sun. Sloppy jointing is the most common cause of leaks in plastic systems, particularly where solvent-weld or fusion joints are rushed, and installers should confirm that every joint is made to the manufacturer’s method. The common PPR fitting installation mistakes in Saudi Arabia are a useful reminder of what to check during installation.
Testing and inspection before concealment
Plumbing systems are tested before they are covered up: water distribution pipework is pressure tested to the value the code requires, held for the required duration, and inspected for leaks at joints and connections. Drainage systems are tested by water or air test in accordance with the code. Keep the test certificates and inspection records as part of the handover file — an untested system is an unproven system.
Hot water, insulation and conservation
Hot water systems must deliver safe temperatures with scald protection where required, and hot water pipework must be insulated to limit heat loss and energy waste. Plastic systems handle continuous hot water well when the correct material and class are chosen – see our guide to PPR-CT pipes for their strength at temperature – and protecting chilled lines against condensation are standard practice in Saudi buildings.
Documentation: Submittals, Approvals, Handover
Compliance is demonstrated on paper as much as on site. Expect to provide product data and certificates, test reports, material submittals, pressure test certificates, as-built drawings and the completed inspection records for each system. Submittals go to the consultant and the authority before installation so approved products and details are on record. At handover, the file should show the complete chain for your Saudi Building Code plumbing pipes — design, approved materials, test and inspection — with records traceable to the installed pipework. The quality assurance page is a good first check of how a manufacturer handles it.
A Practical Compliance Checklist
- Design to the current edition of SBC 701 and confirm amendments with your consultant.
- Specify pipes and fittings to the applicable SASO-adopted standard, with potable-water approval where the system carries drinking water.
- Match material, PN class and temperature rating to each line’s actual duty.
- Provide backflow and cross-connection protection at tanks, pumps and equipment.
- Support, anchor and allow expansion as the code and manufacturer require; protect pipe from UV and damage.
- Pressure test and inspect before concealing any pipework; keep the records.
- Insulate hot water lines and submit full documentation for approval.
Frequently Asked Questions
Which part of the Saudi Building Code covers plumbing?
SBC 701, the Saudi Plumbing Code, is the volume covering water supply, drainage, venting and related systems. Companion volumes address supports, equipment, water conservation and energy, but plumbing design, approval and inspection run through SBC 701.
Do PPR pipes comply with Saudi requirements?
Yes – PPR systems manufactured to the applicable SASO-adopted standard (aligned with ISO 15874 for PP piping) and approved for the intended duty meet the Saudi Building Code plumbing pipes requirements. The approval is about the product and its conformity documents, not about the brand name on the pipe.
Who enforces the plumbing code in Saudi Arabia?
Approvals and inspections run through the authority having jurisdiction for the project – typically the local municipality and, for water and wastewater connections, the service providers. Your consultant and the inspecting authority confirm compliance at submittal, installation and handover stages.
Where can I read the official requirements?
Through the official Saudi Building Code channels and the standards published by SASO. Because editions change, always check the current edition and any amendments before you specify. For more on Saudi plumbing topics, see our Saudi Arabia blog.
Final Word
Plastic piping and the Saudi Building Code work well together when three things are right: certified products, correct installation, and complete documentation.
Get those three right and the code stops being an obstacle and becomes a checklist that carries the project through approval, inspection and handover. If you are specifying plastic pipework for a Saudi project and want help matching products to the code requirements, talk to the team that makes them: Aquagas Plastics runs a manufacturing facility in the region and supplies its AquaTerra and PP Terra brands across the Kingdom. Read the company profile to see how the operation is set up, or contact our team with your drawings and specifications — we will help you check the products against the code line by line.
