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Water treatment chemicals in Saudi Arabia are the antiscalants, coagulants, inhibitors, biocides and disinfectants used in desalination plants, reverse osmosis units, cooling systems, boilers and wastewater works. This page explains each product group, the chemistry issues Saudi feed water creates, how MEWA permits and Saudi Water Authority licensing apply as of 2026, and what to compare when choosing a supplier in Riyadh, Jeddah or the Eastern Province.
Riyadh is a user and distributor of chemicals more than a producer. Large petrochemical and bulk-gas capacity sits in the Eastern Province, around Jubail, so the chemicals, lubricants and industrial gases sector in the capital mostly means blending, packing, distribution and technical service for local customers. Buyers include contractors, hospitals, food plants, water and cooling operators, and the factories in Riyadh Second Industrial City and Al-Tatweer Private Industrial City. Gas companies and paint makers have operated in the capital for years, but confirm the product range and plant location of any supplier before ordering, because published sources do not list a full tenant roster.
Construction demand pulls in construction chemicals and industrial paints and coatings, including protective systems for steel. Hospitals and workshops need oxygen, nitrogen and gas cylinders and regulators. Fleets and factories buy industrial lubricants and hydraulic oils, and cooling plants use water treatment chemicals. Heat shortens the life of oils and coatings, so ask for the viscosity grade and the maximum service temperature rather than a brand name.
Chemical storage and transport are subject to Civil Defense requirements, and many compounds also need environmental and municipal approvals, so the supplier should hand over a safety data sheet in Arabic and English for every product. Gas cylinders need test dates and a return system. Do not store flammables inside offices or near electrical rooms, and confirm the permitted quantity with the General Directorate of Civil Defense or your HSE consultant.
For recurring supply, agree a delivery schedule to your plant gate and a stocking arrangement for the Riyadh warehouse. For a large coating package, ask for the applicator's reference jobs and a dry film thickness plan. If the product comes from the Eastern Province, ask about transit and cylinder turnaround. Compare offers on one specification with post a requirement.
Riyadh is a capital before it is an industrial centre, so its factories sit in planned estates on the edge of the built-up city rather than in the middle of it. The authority behind most of them is the Saudi Authority for Industrial Cities and Technology Zones, known as MODON, which also leases ready-to-use factory units. Riyadh Second Industrial City, to the south along the Al-Kharj road, is the long-standing manufacturing district; a 2013 report on the opening of ready-made small factories there shows how early MODON used it for small and mid-size manufacturers. Next to it, Al-Tatweer Private Industrial City, licensed in 2007 and renamed in 2020, targets electrical, food and building-materials plants. Sudair City for Industry and Businesses in the wider Riyadh region is one of the cities MODON named as a leading food and beverage manufacturing location in 2023.
Inside the city, older trading and workshop districts handle spare parts, tools and small fabrication, while warehouse stock has grown to about 28.9 million square meters, according to a Knight Frank review reported in October 2025.
Riyadh has no seaport, so imports arrive through Dammam, Jubail or Jeddah and then move inland. The Riyadh Dry Port, run under a concession by Saudi Global Ports, is linked by rail to King Abdulaziz Port in Dammam, King Fahd Industrial Port and Jubail Commercial Port, and Ras Al-Khair Port. In April 2024 Mawani reported the first container shipment by rail from Jubail Commercial Port to the dry port, 78 containers on one train. Trucks carry the remainder along the main highways, and air freight moves through the capital's airports. Ask your forwarder which leg is faster for your cargo, since customs clearance by ZATCA can happen at the port or at the dry port.
MODON and the Ministry of Industry and Mineral Resources deal with factory land and licences. The Royal Commission for Riyadh City leads the city's large programmes, including the Riyadh Metro and the main road axes. Building permits follow the Saudi Building Code through the municipality, and fire and life safety approvals come from the General Directorate of Civil Defense. Medical devices must be authorised by the Saudi Food and Drug Authority. Confirm the current steps on each authority's own platform before you sign a contract.
Construction leads, driven by the metro, King Salman Park and the New Murabba downtown, which was announced with a completion target of 2030. Healthcare follows, with three public health clusters. Food, packaging and electrical plants buy machinery for the estates, and data centres, offices and hotels buy cooling, power and facilities services. Heavy oil, gas and petrochemical demand is stronger in the Eastern Province.
