Saudi Arabia Updates Washer Efficiency Standards, Mandates Dual Certification for RO Antiscalants

Saudi Arabia Updates Washer Efficiency Standards, Mandates Dual Certification for RO Antiscalants

On 22 May 2026, the Saudi Standards, Metrology and Quality Organization (SASO) issued SASO 2870:2026, Energy and Water Efficiency Labelling Requirements for Household Washing Machines. The regulation introduces a new mandatory requirement for reverse osmosis (RO) antiscalants used in conjunction with certified washing machines — namely, dual certification under NSF/ANSI Standard 60 (drinking water system components) and Appendix B of SASO 2870:2026 (high-temperature cyclic scale inhibition performance). This change directly affects manufacturers, exporters, and service providers engaged in the RO water treatment supply chain serving the Gulf Cooperation Council (GCC) market.

Event Overview

SASO published SASO 2870:2026 on 22 May 2026. The standard establishes updated energy and water efficiency labelling requirements for household washing machines sold in Saudi Arabia. A key technical annex — Appendix B — specifies performance criteria for antiscalants used in integrated or ancillary RO systems linked to high-efficiency laundry appliances. Under the regulation, any RO antiscalant marketed or supplied for use with SASO 2870:2026-compliant washing machines must hold both NSF/ANSI 60 certification (verifying safety for contact with potable water) and SASO-specific validation per Appendix B (demonstrating efficacy under simulated high-temperature, repeated dosing conditions typical of modern washer-RO hybrid units). Chinese exporters of RO antiscalants must complete this dual certification transition by 1 December 2026 to maintain market access.

Industries Affected

Direct Trading Enterprises

Export-oriented trading companies handling RO antiscalants from China to Saudi Arabia face immediate compliance deadlines. Their impact stems not only from documentation gaps but also from potential shipment rejections at port if products lack valid dual certification by the 1 December 2026 cutoff. Since many trade contracts are negotiated months in advance, unanticipated certification delays may trigger contractual penalties or loss of tender eligibility in public-sector procurement channels tied to SASO-conforming appliances.

Raw Material Sourcing Enterprises

Suppliers of key antiscalant raw materials — such as polyacrylic acid (PAA), phosphonates, and dispersants — may experience revised demand profiles. SASO 2870 Appendix B’s high-temperature cycling test imposes stricter thermal stability and hydrolysis resistance requirements than traditional NSF/ANSI 60 alone. As formulators adjust blends to meet both standards, sourcing enterprises may see increased orders for thermally robust monomers or modified polymers — but only after downstream customers validate compatibility and performance.

Manufacturing Enterprises

RO antiscalant producers must undertake full reformulation, analytical validation, and third-party testing to satisfy two distinct certification pathways. Unlike NSF/ANSI 60 — which focuses on leachate toxicity and material safety — Appendix B requires functional performance data under dynamic, elevated-temperature conditions replicating real-world washer-RO integration. This necessitates investment in accelerated aging trials, multi-cycle dosing protocols, and possibly new analytical methods (e.g., ICP-OES for residual scale metal quantification), increasing time-to-market and R&D overhead.

Supply Chain Service Providers

Testing laboratories, certification bodies, and regulatory consultants accredited for NSF/ANSI 60 work will need to expand capacity or partner with SASO-recognized labs capable of executing Appendix B protocols. Notably, SASO has not yet published a list of authorized testing facilities for Appendix B validation — creating uncertainty for service providers advising clients on route-to-certification. Logistics firms may also face tighter documentation audits, including batch-level traceability linking certified formulations to specific export consignments.

Key Considerations and Recommended Actions for Stakeholders

Verify current certification scope against SASO 2870:2026 Appendix B

NSF/ANSI 60 certification alone is no longer sufficient. Exporters must confirm whether their existing certification covers the exact formulation, concentration range, and packaging configuration intended for the Saudi market — and whether the certifying body is authorized to issue SASO-recognized reports for Appendix B testing.

Initiate dual-path testing well before the 1 December 2026 deadline

Given typical lead times for NSF/ANSI 60 re-certification (8–12 weeks) and limited global capacity for SASO Appendix B testing, stakeholders should commence sample submission and protocol alignment by Q3 2026 at the latest. Delays risk missing the compliance window entirely.

Review product labelling and technical documentation

New bilingual (Arabic–English) labelling must explicitly reference both certifications. Technical data sheets must include test parameters used for Appendix B validation — particularly temperature profile, cycle count, feedwater hardness, and measured scale inhibition rate — as SASO inspectors may request these during post-market surveillance.

Editorial Perspective / Industry Observation

Observably, SASO 2870:2026 marks a strategic shift from standalone product efficiency regulation toward *system-level performance governance*. By binding antiscalant certification to appliance standards, SASO effectively extends regulatory oversight across functional interfaces — a precedent that could influence future GCC harmonization efforts in smart home water systems. Analysis shows this approach increases technical barriers to entry but may also accelerate innovation in thermally stable, low-leaching antiscalant chemistries. From an industry perspective, the move signals growing convergence between appliance energy policy and water treatment chemical regulation — a linkage previously seen only in niche EU eco-design initiatives.

Conclusion

This update reflects a broader trend: national standards bodies increasingly treating chemical auxiliaries not as generic consumables, but as integral, regulated subsystems within energy-efficient appliances. For global suppliers, it underscores the need to treat regional certification not as a static ‘tick-box’ exercise, but as a dynamic, cross-functional capability involving R&D, regulatory affairs, and supply chain coordination. A rational interpretation is that compliance agility — rather than certification possession alone — will become the decisive competitive differentiator in regulated water-tech markets.

Source Attribution

Official text of SASO 2870:2026 published by the Saudi Standards, Metrology and Quality Organization (SASO), 22 May 2026. Annex B test methodology remains subject to technical clarification; stakeholders are advised to monitor SASO’s official portal (https://www.saso.gov.sa) for updates on authorized testing laboratories and transitional guidance. Ongoing observation is warranted regarding potential extensions to other GCC members under the GCC Standardization Organization (GSO) mutual recognition framework.